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Academic literature on the topic 'STATOR PLATE'

Author: Grafiati

Published: 11 September 2023

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Journal articles on the topic "STATOR PLATE"

1

Costa Conrado, Ana. "Modelling the radially polarised annular stator of a piezoelectric travelling wave ultrasonic motor based on the shear effect." Journal of Intelligent Material Systems and Structures 30, no. 8 (March 14, 2019): 1225–38. http://dx.doi.org/10.1177/1045389x19829833.

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This article deals with the mathematical–analytical model of a radially polarised stator, part of a piezoelectric travelling wave ultrasonic motor based on the shear effect. The stator is treated with a Reissner–Mindlin plate model containing piezoelectric terms. The so-obtained mathematical description of the disc stator takes into account its geometry, kinematics and characteristics that influence efficiency and torque. Rayleigh–Ritz discretisation is used to obtain eigenfrequencies and eigenmodes of the stator plate. In addition, there are often teeth over the contact surface of ring-shaped stators to minimise the friction losses during operation of the motor, and possible vibration modes are compared with respect to the deflexion of the contact points. In the laboratory, measured eigenfrequencies of the free vibrations of the plate corroborate the numerical method. Particularly, the generation of travelling waves requests the excitation of two degenerated vibration modes in a certain electrode configuration. A voltage inverter was designed for this purpose.

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Henderson, G. H., and S. Fleeter. "Forcing Function Effects on Unsteady Aerodynamic Gust Response: Part 2—Low Solidity Airfoil Row Response." Journal of Turbomachinery 115, no. 4 (October 1, 1993): 751–59. http://dx.doi.org/10.1115/1.2929310.

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The fundamental gust modeling assumption is investigated by means of a series of experiments performed in the Purdue Annular Cascade Research Facility. The unsteady periodic flow field is generated by rotating rows of perforated plates and airfoil cascades, with the resulting unsteady periodic chordwise pressure response of a downstream low-solidity stator row determined by miniature pressure transducers embedded within selected airfoils. When the forcing function exhibited the characteristics of a linear-theory vortical gust, as was the case for the perforated-plate wake generators, the resulting response on the downstream stator airfoils was in excellent agreement with the linear-theory models. In contrast, when the forcing function did not exhibit linear-theory vortical gust characteristics, i.e., for the airfoil wake generators, the resulting unsteady aerodynamic responses of the downstream stators were much more complex and correlated poorly with the linear-theory gust predictions. Thus, this investigation has quantitatively shown that the forcing function generator significantly affects the resulting gust response, with the complexity of the response characteristics increasing from the perforated-plate to the airfoil-cascade forcing functions.

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Dennis, John Ojur, Almur Abdelkreem Saeed Rabih, Mohd Haris Md Khir, Mawahib Gafare Abdalrahman Ahmed, and Abdelazez Yousif Ahmed. "Modeling and Finite Element Analysis Simulation of MEMS Based Acetone Vapor Sensor for Noninvasive Screening of Diabetes." Journal of Sensors 2016 (2016): 1–14. http://dx.doi.org/10.1155/2016/9563938.

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Diabetes is currently screened invasively by measuring glucose concentration in blood, which is inconvenient. This paper reports a study on modeling and simulation of a CMOS-MEMS sensor for noninvasive screening of diabetes via detection of acetone vapor in exhaled breath (EB). The sensor has two structures: movable (rotor) and fixed (stator) plates. The rotor plate is suspended on top of the stator by support of four flexible beams and maintaining certain selected initial gaps of 5, 6, 7, 8, 9, 10, or 11 μm to form actuation and sensing parallel plate capacitors. A chitosan polymer of varied thicknesses (1–20 μm) is deposited on the rotor plate and modeled as a sensing element for the acetone vapor. The minimum polymer coating thickness required to detect the critical concentration (1.8 ppm) of acetone vapor in the EB of diabetic subjects is found to be 4–7 μm, depending on the initial gap between the rotor and stator plates. However, to achieve sub-ppm detection limit to sense the acetone vapor concentration (0.4–1.1 ppm) in the EB of healthy people, up to 20 μm polymer thickness is coated. The mathematically modeled results were verified using the 2008 CoventorWare simulation software and a good agreement within a 5.3% error was found between the modeled and the simulated frequencies giving more confidence in the predicted results.

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Rundo, Massimo, and Nicola Nervegna. "Geometry Assessment of Variable Displacement Vane Pumps." Journal of Dynamic Systems, Measurement, and Control 129, no. 4 (October 24, 2006): 446–55. http://dx.doi.org/10.1115/1.2718245.

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The paper brings to evidence the effect that geometry of the stator ring of variable displacement radial pumps bears on performance characteristics of these units. The type of motion of the stator ring (linear or rotational), the location of the center of rotation, the porting plate integral with the casing or with the stator ring all have remarkable effects on the pump steady state and dynamic performance. At steady state, an influence exists on the attainable minimum displacement and on the deviation of discharge pressure from the desired setting when displacement is being controlled. In turn, dynamic performance is affected by changes in port plate timing as stator position and displacement undergo transitions. Specific attention is then committed to variable displacement vane pumps for internal combustion engines lubrication where an additional and foremost effect is investigated concerning the issues entailed by internal forces distribution on the stator ring that originate from incomplete chambers filling at high rotational pump speed.

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Chen, Chao, and Chongmin She. "Creep Effect Analysis at the Friction Interface of a Rotary Ultrasonic Motor." International Journal of Applied Mechanics 07, no. 02 (April 2015): 1550031. http://dx.doi.org/10.1142/s1758825115500313.

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Theoretical and experimental studies for the creep mechanism at the friction interface between rotor and stator of traveling wave type rotary ultrasonic motors (TRUM) are performed in this work. A modeling method is developed to investigate the creep and the distributed contact pressure in the friction interface for the piezoelectric composite stator with complex geometries. The annular laminated structure of the stator is discretized into a semi-analytical plate element in the radial direction, and the teeth on top of the stator are modeled by the finite element (FE) method. Then a coupled approach for the continuous plate and FE discretized teeth is proposed to investigate the interface contact mechanism. Finally, the accelerated aging tests for TRUM are conducted to study the creep effect in the friction layer during the long-term storage, the startup state is investigated experimentally by the transient characteristics measurement system. It is shown that transient characteristics of TRUM are strongly affected by the creep effect at the friction interface. The vibration response of the stator is weakened by the creep of the contact layer, and the amplitude of the piezoelectric composite plate decreases with increasing creep percentage. It is theoretically and experimentally proved that the creep percentage of over 20% can lead to the startup failure of TRUM.

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Karabay, H., J. X. Chen, R. Pilbrow, M. Wilson, and J. M. Owen. "Flow in a “Cover-Plate” Preswirl Rotor–Stator System." Journal of Turbomachinery 121, no. 1 (January 1, 1999): 160–66. http://dx.doi.org/10.1115/1.2841225.

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This paper describes a combined theoretical, computational, and experimental study of the flow in an adiabatic preswirl rotor–stator system. Preswirl cooling air, supplied through nozzles in the stator, flows radially outward, in the rotating cavity between the rotating disk and a cover-plate attached to it, leaving the system through blade-cooling holes in the disk. An axisymmetric elliptic solver, incorporating the Launder–Sharma low-Reynolds-number k–ε turbulence model, is used to compute the flow. An LDA system is used to measure the tangential component of velocity, Vφ, in the rotating cavity of a purpose-built rotating-disc rig. For rotational Reynolds numbers up to 1.2 × 106 and preswirl ratios up to 2.5, agreement between the computed and measured values of Vφ is mainly very good, and the results confirm that free-vortex flow occurs in most of the rotating cavity. Computed values of the preswirl effectiveness (or the nondimensional temperature difference between the preswirl and blade-cooling air) agree closely with theoretical values obtained from a thermodynamic analysis of an adiabatic system.

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Dong, Peng, Shengdun Zhao, Shuqin Fan, Muzhi Zhu, and Peng Zhang. "Double-rotator and valve plate distribution radial piston pump." Assembly Automation 40, no. 2 (November 3, 2019): 265–71. http://dx.doi.org/10.1108/aa-12-2018-0270.

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Purpose The drive shaft and the distribution shaft of a traditional radial piston pump are in a cantilever state. To solve this problem, this paper aims to present a radial piston pump with through shaft driving and valve plate distribution. Design/methodology/approach The working principle of the pump is discussed in detail. In this radial piston pump, valve plate distribution parts are designed to distribute oil to the piston chambers, and the distribution shaft is replaced. A bearing is installed between the stator and rotator to reduce the friction. The transmission shaft is supported by two bearings to ensure smooth operation. The support force of the transmission shaft is optimized. In addition, the flow pulsation principle is presented. To accomplish the change, the displacement of the radial piston pump, the proportional control system is designed. Findings After completing the machining and assembly of the pump, an experimental study was carried out. The results show that the output flow of the pump is basically the same as the theoretical flow. Originality/value The friction between the slipping shoes and the stator is greatly reduced due to the function of rolling bearings. The higher stability of the driveshaft is obtained for the reason of double-sided support. The radial piston pump has a novel structural design in reducing the friction between the shoes and the stator and improving the stability of the transmission shaft.

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Chen, Chao, and Ru Juan Chen. "Analysis and Design of Stator of Traveling Wave Type Rotary Ultrasonic Motor." Advanced Materials Research 199-200 (February 2011): 805–10. http://dx.doi.org/10.4028/www.scientific.net/amr.199-200.805.

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Due to its compact sizing, fast response and good control performance traveling wave type rotary ultrasonic motor (TRUM) has significant potentials for applications in robot actuation. In order to considering the complex geometries, this paper presents modeling approach for micro-TRUM stator. First piezoelectric composite stator is partitioned into three substructures, two of which are modeled as several continuous annular plates by semi-analytical method. Without losing the complex geometries, the stator teeth as another substructure are modeled by means of finite element (FE) approach. Based on both component-mode synthesis and dynamic reduction, the coupled method for continuous plate and FE discretized teeth is presented in order to consider dynamic behavior of composite stator with good accuracy and short computation time. It allows combination of the continuous parameters and FE discretized substructures, and the mathematical model representing the complete stator is derived. Finally the prototype is manufactured according to the presented method. The validation of the analysis and design method is attained through the experiments for the manufactured stator. It is pointed that radial friction can be capable to increase s for the ultrasonic motor with smaller dimension. It explains why micro-TRUM has a fast heat output at the contact interface.

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Gherman, Bogdan, Oana Dumitrescu, and Valeriu Dragan. "Transonic flow study in a centrifugal compressor using perforated airfoils." Aerospace Research in Bulgaria 32 (2020): 110–21. http://dx.doi.org/10.3897/arb.v32.e10.

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In this paper, the effect on a perforated plate on a centrifugal compressor is investigated using numerical simulation. The performances and fluid flow are compared for two different vaned diffusers, a base case where there are no perforated plates and a case where a perforated plate is inserted in the rotor casing at exit and the stator blade. The impact of this geometry change on the compressor performances it is studied in the case of adverse angles of attack at stator vane. Near wall refinement ensures the accuracy resolution of the boundary layer with a y+ value of one unit corroborated with a growth ratio of 1.1:1. Menter’s SST model was used in all numerical cases performed, as implemented in ANSYS CFX. Following the results of the baseline diffuser, the optimal position of the perforated cavity was determined.

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Kuchynskyi, K. A., V. A. Kramarskyi, D. I. Hvalin, and V. A. Mystetskyi. "STUDY OF PHYSICAL PROCESSES IN A TURBOGENERATOR END ZONE AT THE MECHANICAL DAMAGES OF STATOR CORE FASTENING." Praci elektrodinamiki Nacionalanoi akademii nauk Ukraini Institutu 2020, no. 57 (December 2, 2020): 65–72. http://dx.doi.org/10.15407/publishing2020.57.065.

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With the help of mathematical simulation of mechanical processes in the stator core fastening system of a powerful turbogenerator end zone obtained appropriateness of basic parameters changes at the break of clamp prisms heads of the stator core. It is determined that the sudden break of one or more clamp prisms leads to longitudinal oscillation of their other working heads and stiff connected with them press plate, accordingly. Although such oscillation is insignificant but propagates along the entire surface of the press plate with a maximum value in the break zone and subsequent decrease with distance from this zone and therefore can be detected with the help of existing vibration sensors by installing them on the press plate. It is possible to use a limited number of sensors due to the propagation of vibration along the entire surface of the plate. But because the vibration changes are insignificant, in this case, there is a complexity of control that requires the use of high-sensitivity sensors and great informative computing equipment. According to the sensors indices, it is possible to determine the number of breaks for clamp prisms heads of the stator core and the number of them working heads, accordingly. Besides, this effect can be used to diagnose the un-compression of the stator core tooth zone. Since one of the important ways to improve the control and diagnostics of turbogenerators is the detection, the presence of such knowledge will allow making the optimal decision for further measures. References 8, figures 8, tables 2.

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Dissertations / Theses on the topic "STATOR PLATE"

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Karabay, Hasan. "Flow and heat transfer in cover-plate pre-swirl rotor-stator system." Thesis, University of Bath, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242797.

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Portier, Sarah. "Implementation of Third Order Plate Theory for use in Existing Finite Element Software." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/79680.

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Sandwich plates and layered composites are common in many structural applications because of their combination of high stiffness and low weight. These plates combine top and bottom layers of high Young's modulus with intermediate layers of material carrying predominantly shear loads. Finite elements developed for the analysis of sandwich plates need to accurately model transverse shear stresses through the plate thickness. This study was inspired by an Office of Naval Research project to investigate the suitability of steel sandwich plates as ship hulls. A finite element implementation based on a third-order shear deformation element was used in a standard finite element program to model transverse shear stresses in a simply supported plate. Four elements based on third-order theory are developed and tested. Using static condensation to reduce the number of degrees of freedom required by a third-order plate element does not preserve the element's accuracy in either displacements or stresses, and stresses do not converge with refinement of the mesh. For the thin isotropic plate case, some condensed elements give reasonable displacement and stress results, but only for certain choices of mesh and the element is less versatile than one based on first order plate theory. None of the condensed elements give good results for composite plates of any thickness.
Master of Science

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Connor, Michael. "A place to call home." Thesis, Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/17098.

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Brose, Angela B. "A vision for public place in America." Virtual Press, 1998. http://liblink.bsu.edu/uhtbin/catkey/1116355.

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The importance of public place in the United States of America as an environment for communication, the transmission of cultural values and for the enhancement of society and community, using a comprehensive notion of entertainment as a catalyst.creative projectThis project intends to develop a catalogue of design implications for the design of a public place that successfully serves the community enhancement and the cultural transmission. This catalogue of design implications will be the result of the extensive research on the American culture, on the elements of cultural expression with emphasis on the use of entertainment as a catalyst, on the elements of urban history and the urban environment as well as on the social and commercial success of public place.contextThe context of this research is the number of issues American urban environments are facing. Most of the problems in their combination are the source of numerous urban issues. Some of the key issues that have developed on this basis are e.g. the loss of human scale or e.g. the need for a collective vision, community and cultural identity. These issues are strongly interrelated with another.issueThese are some of the deficiencies that lead to the key issue of this project: the loss of community manifested by urban isolation and fragmentation and problems relating to the humane environments and settings. Nevertheless community and cultural enhancement can help to create a greater awareness for the prerequisites for a healthy living environment. Community and cultural enhancement help to stimulate greater self-sufficiency helping to address the previously mentioned issues at their sources. The premise is that community is an essential ingredient in cohesive urban and suburban neighborhoods and is part of the positive image of a well designed and maintained city fabric.positionThe focus of this work is the community, the public place and the cultural expression with emphasis on entertainment. In the same order they represent the issue, the place and the catalyst. This work claims that entertainment can be used to design an environment enhancing community and communication. The assumption related with entertainment is that social interaction and collective well being are essential parts of community structure and therefore activities related to entertainment help to foster a collective vision.methodThe first step to prove this position is to identify the issues concerning urban settlements in the United States of America. The urban context has to be defined. The second step is to define the cultural context and to analyze the notion of entertainment as a means of cultural expression and its potential to serve as a catalyst. The third step is to identify the elements of social and commercial success of a public environment using at least two models defining those elements. Each of the three steps concludes in a set of architectural values and design elements. The fourth step is to deduce a catalogue of design implications from the information collected. This last step proposes the practical application of this research. The anticipated results of this project should be regarded as a suggestion for the practical application of this research based on the observation of and reflections on the research results, hopefully resulting in the identification of additional questions for further research.
Department of Architecture

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Stillion, John. "Blunting the talons the impact of peace operations deployments on USAF fighter crew combat skills /." Santa Monica, CA : RAND, 1999. http://catalog.hathitrust.org/api/volumes/oclc/43515486.html.

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Dolby, Joyce A. "Between a rock and a hard place : seven homeless mothers tell their stories." Virtual Press, 1996. http://liblink.bsu.edu/uhtbin/catkey/1014841.

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Homelessness has increased in the United States over the last 15 years, but one of the most distressing trends has been the increase of homeless families. Current literature suggests that healthcare services for the homeless family may be fragmented and difficult to access. Rationale for this study was to gain understanding of homeless families, and therefore increase the effectiveness of nurses working with homeless families.This qualitative study used a Heideggerian hermaneutical phenomenological approach as the philisophical framework. A script of questions and information about the study was presented to mothers at a shelter in a group meeting. The researcher then contacted each mother to learn of the mother's desire regarding participation. Seven mothers participanted. Shelter residents were informed that they may refuse participation or withdraw from the study at any time without prejudice from the researcher. Audio-taped interviews will took place in a private vacant office at the shelter. The researcher transcribed the interviews, eliminating any information (names, cities, agencies, relatives, etc.) that could identify the participants. Transcribed interviews were analyzed for common themes identified by the mothers. Audio-tapes were destroyed after data analysis.Risks involved included possible discomfort as residents discuss issues in their past. Should a mother become emotionally distressed in the interview, the researcher was prepared to assist her to identify coping resources. i ne motners were also iniormeu that, in one unlikely event information was shared that may indicate child abuse, the researcher was required to report child abuse to the State of Indiana. Benefits included ability to express feelings in a confidential setting. A $20 item of jewelry or a household commodity was presented to participants as an honorarium after completion of the interview.The lived experience of being a homeless mother with a family can only be fully understood by the mother who has lived the experience. Six common themes were identified by the mothers who participated in this study. Lack of assistance from biological fathers, or "I can't count on him" was a contributing factor towards the mothers' circumstances. Experience of a recent traumatic event without sufficient coping skills or resources emerged as a second theme, and was described by the quote "I don't know what to do." The third theme regarding the mother's concern for meeting the needs of their children was summarized by the insight "And kid's time don't stop." The perception of ineffective or demeaning treatment by helping agencies or "They really didn't care for me" was the fourth theme. The difficulty of carrying on family life was described in the fifth theme as "Things that are hard". And finally, the sixth theme described the difficulty in finding a residence as the mothers were told by landlords repeatedly, "I really don't have anything right now."The conclusion from the study was that homeless mothers and their familys have many needs not yet met by healthcare and helping agencies. This population is overwhelmed by the stresssors they face, and principles of crisis intervention are not adequately used to assist them. At the same time, these mothers demonstrate a great deal of concern and determination to care for their children.Through this study, nurses can learn of the obstacles common to homeless mothers, and the strengths that assist homeless mothers to persist and meet the needs of their family. By better understanding homeless families, nurses can adopt a more comprehensive approach to address their healthcare needs.
School of Nursing

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Sloss, Eric J. "Homeless Abjection and the Uncanny “Place” of the National Imagination." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc500028/.

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This project examines the effects of the homeless body and the threat of homelessness on constructing a national imaginary that relies on the trope of locatability for recognition as a citizen-subject. The thesis argues that homelessness, the oft-figured specter of public space, functions as bodies that are “pushed out” as citizen-subjects due to their inability maintain both discursive and material location. I argue that figures of “home” rely on the ever-present threat of dislocation to maintain a privileged position as the location of the consuming citizen-subject. That is, the presence of the dislocated homeless body haunts the discursive and material construction of home and its inhabitants. Homeless then becomes the uncanny inverse of home, functioning as an abjection that reifies home “place” as an arbiter of recognition in a neoliberal national imaginary. The chapters proceed to examine what some consider homeless “homes,” focusing on the reduction of the homeless condition to a place of inhabitance, or the lack thereof. This attempt to locate the homeless body becomes a symptom of the desire for recognition as a placed body. The thesis ends on a note of political possibility, figuring the uncanny as a rupture that evacuates language of signification and opens up space for a form of recognition without an over-determined identity.

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Krenzke, Shaun R. "Housing for empowerment : more than just a place to eat, sleep, and watch TV." Virtual Press, 2004. http://liblink.bsu.edu/uhtbin/catkey/1305456.

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I began this investigation by asking a question. What is a possible design solutionthat can enable people who live-in or seek-out affordable housing to inhabit a structure that is more than a shelter, but a place they are proud to return to, bring friends to, and live in?The first portion of this thesis documents the need for affordable housing in the United States. Franklin Roosevelt, in 1944 before United States Congress, listed one of the economic rights of every citizen to be, "the right of every family to a decent home." Less money is being spent building new affordable housing or maintaining existing housing than at any other time in our history. The need for affordable housing continues to grow while the amount of available units continues to decline. There will always be a need for affordable housing in the United States. Some people will move out, but there will be new people with a need. I believe housing should be more than merely shelter. The rundown big box affordable housing we are all familiar with does not empower the people who occupy it to live their lives or easily better themselves. They are isolated in location and by negative connotation. There are a growing number of architects who have taken on the challenge to help people to better themselves, when they are unable to themselves. The four architectural precedents that are documented in the second portion of this thesis have dedicated their lives and abilities to creating better affordable housing that aids in allowing citizens, reguardless of race, ethnicity, or income (economic status), to benefit from their physical environment. Examples of each architectural firm's work are presented. I examine the design and participatory processes that enabled the architects to empower the people who live in their well-designed affordable housing.The final portion of this thesis focuses on stating and justifying seventeen design principles to enable people to create decent affordable housing based on the research and interviews. These principles investigate the ideas of being human, giving the sense of ownership to the people who live in affordable housing, being contextually respectful to one's neighborhood and community, being environmentally friendly, being modifiable or changeable for the different people who live in it over time, and respecting each family's specific story and enabling them to express their life and lifestyle. This thesis expresses the design principles of housing for empowerment.
Department of Architecture

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Southwick, Sally Jo. "Building on a borrowed past: History, place, and identity in Pipestone, Minnesota." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/284014.

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This dissertation focuses on Pipestone, Minnesota, which provides an important example of the process of creating and localizing national identity. Founded in 1874, the town derived its name from the nearby pipestone quarries, a traditional excavation site for regional tribes. In the early nineteenth century George Catlin's artistic representations made the area famous and Henry Wadsworth Longfellow's poetic interpretations of tribal mythology offered a romantic Indian past that appealed to industrializing America. This study proposes that the town's founders accepted the popular perceptions of the quarries' significance to the tribes--particularly the symbol of the "peacepipe" and its source in sacred ground--and actively employed related tribal imagery to create local identity and to promote the town on state and national levels. Emphasis on the quarries as unique and central to America's Indian heritage helped Pipestone attract railroad lines, a federal Indian boarding school in the 1890s, and a national monument in the 1930s to protect the quarries and to attract tourists. This dissertation traces the development of Pipestone from Catlin's early influential images of the quarries and tribes to the first productions of the town's annual "Song of Hiawatha" pageant in the 1940s and 1950s. Since the town's inception its residents continuously adapted their conceptions of the quarries' Indian heritage in order to generate a usable past. This study analyzes the ways in which they used tribal and landscape imagery to encourage town growth, investment, tourism, and the legitimizing presence of the federal government, making Pipestone a nationally-known place and a self-professed "real American" town. Archival sources examined include local and regional newspapers, memoirs, town business, state, and railroad promotional literature, federal institutional documents, state histories, and publications by the county historical society. These sources provide evidence of how the town's residents produced and maintained Pipestone's image and how this local process illustrates Americans' search for historical identity.

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Seltz, Jennifer. "Embodying nature : health, place, and identity in nineteenth-century America /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/10433.

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Books on the topic "STATOR PLATE"

1

Eric, Piasecki, ed. Time & place. New York: Abrams, 2012.

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Biden, Joseph R. A better place. New York: Random House, 2007.

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Morris, Celia. Finding Celia's place. College Station: Texas A & M University Press, 2000.

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A place called Peculiar: Stories about unusual American place-names. Mineola, N.Y: Dover, 2012.

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Thomas, Kurian George. Political market place, USA. Phoenix, Ariz: Oryx Press, 1999.

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United States. Dept. of Housing and Urban Development, ed. Place Based System. [Washington, D.C.?: U.S. Dept. of Housing and Urban Development, 1996.

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United States. Dept. of Housing and Urban Development., ed. Place Based System. [Washington, D.C.?: U.S. Dept. of Housing and Urban Development, 1996.

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Place names of Illinois. Urbana: University of Illinois Press, 2009.

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Hunter-Gault, Charlayne. Inmy place. New York: Farrar Straus Giroux, 1992.

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Of time and place. Minneapolis: University of Minnesota Press, 1998.

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Book chapters on the topic "STATOR PLATE"

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Kanas, Nick. "Color plate gallery." In Star Maps, 373–464. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-0917-5_11.

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Kubiak, Tomasz. "Thin Plates." In Static and Dynamic Buckling of Thin-Walled Plate Structures, 113–39. Heidelberg: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00654-3_6.

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Huang, Hou-Cheng. "Assumed Strain Finite Element Plate Formulations." In Static and Dynamic Analyses of Plates and Shells, 45–56. London: Springer London, 1989. http://dx.doi.org/10.1007/978-1-4471-1669-1_4.

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Huang, Hou-Cheng. "Linear Benchmark Tests for Plate Elements." In Static and Dynamic Analyses of Plates and Shells, 57–78. London: Springer London, 1989. http://dx.doi.org/10.1007/978-1-4471-1669-1_5.

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Mehrara, H., M. Nili-Ahmadabadi, B. Heidarian, S. Ashouri, and J. Ghiasinejad. "Modeling of Inclined Cooling Plate Semisolid Processing by Model Alloy." In Solid State Phenomena, 785–90. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/3-908451-59-0.785.

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Issel, William. "Introduction. People and Place." In Social Change in the United States, 1945–1983, 1–14. London: Macmillan Education UK, 1985. http://dx.doi.org/10.1007/978-1-349-17808-7_1.

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Reich, Gary M. "Party, Polarization, and Place." In The Politics of Immigration Across the United States, 37–52. New York: Routledge, 2021. http://dx.doi.org/10.4324/9781003110262-2.

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Thomas, Nigel. "Children’s Decisions and Children’s Place." In Children, Family and the State, 190–201. London: Palgrave Macmillan UK, 2000. http://dx.doi.org/10.1057/9781403919915_12.

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Huang, Hou-Cheng. "Defects of Mindlin Plate and Degenerated Shell Elements." In Static and Dynamic Analyses of Plates and Shells, 25–43. London: Springer London, 1989. http://dx.doi.org/10.1007/978-1-4471-1669-1_3.

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Self, Peter, and Herbert J. Storing. "The Workers' Place In The Sun." In The State and the Farmer, 157–76. London: Routledge, 2023. http://dx.doi.org/10.4324/9781003385745-7.

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Conference papers on the topic "STATOR PLATE"

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Deo, Hrishikesh V. "Compliant Plate Seals: Testing and Validation." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-69356.

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Compliant Plate Seals are being developed for various turbomachinery sealing applications including gas turbines, steam turbines, aircraft engines and oil & gas compressors. These seals consist of compliant plates attached to a stator in a circumferential fashion around the rotor. The compliant plates have a slot that extends radially inwards from the seal outer diameter, and an intermediate plate extends inwards into this slot from stator. This design is capable of providing passive hydrostatic feedback forces acting on the compliant plates that balance at a small tip–clearance. Due to this self–correcting behavior, this seal is capable of providing high differential pressure capability and low leakage within a limited axial span, and non-contact operation even in the presence of large rotor transients. In this paper, we have reported leakage test results for Compliant Plate Seals and visually demonstrated robust non-contact operation for different assembly clearances and interferences, stator deflections, high frequency rotor transients, different pressure conditions and rotational speeds.

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Deo, Hrishikesh V., and Deepak Trivedi. "Static Testing of Compliant Plate Seals." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-87989.

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Self–correcting Compliant Plate Seals are being developed for various turbomachinery sealing applications including gas turbines, steam turbines, aircraft engines and oil & gas compressors. These seals consist of compliant plates attached to a stator in a circumferential fashion around the rotor. The compliant plates have a slot that extends radially inwards from the seal outer diameter, and an intermediate plate extends inwards into this slot from stator. This design is capable of providing passive hydrostatic feedback forces acting on the compliant plates that balance at a small tip–clearance. Due to this self–correcting behavior, this seal is capable of providing high differential pressure capability and low leakage within a limited axial span, and robust non–contact operation even in the presence of large rotor transients. In this paper we have described the testing of Compliant Plate Seals in a static leakage test rig (“shoebox” rig) to study the impact of different design parameters on leakage and vibration. A novel high–speed visualization set–up is described and the high–speed videos demonstrate robust non–contact operation for different assembly clearances, bridge–gaps and bridge–heights, for various differential pressure and pressure ratio conditions. The reported leakage results indicate that the leakage is relatively insensitive to assembly clearances due to the self–correcting behavior.

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Deo, Hrishikesh V., Ajay Rao, and Hemant Gedam. "Compliant Plate Seals: Design and Performance Simulations." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-69348.

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Compliant Plate Seals are being developed for various turbomachinery sealing applications including gas turbines, steam turbines, aircraft engines and oil & gas compressors. These seals consist of compliant plates attached to a stator in a circumferential fashion around a rotor. The compliant plates have a slot that extends radially inwards from the seal outer diameter, and an intermediate plate extends inwards into this slot from stator. This design is capable of providing passive hydrostatic feedback forces acting on the compliant plates that balance at a small tip–clearance. Due to this self–correcting behavior, this seal is capable of providing high differential pressure capability and low leakage within a limited axial span, and non–contact operation even in the presence of large rotor transients. CFD models have been developed to predict the leakage flow rates and hydrostatic lift and blowdown forces, and a design philosophy is proposed to predict the feedback phenomenon from the CFD results.

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Karabay, Hasan, Jian-Xin Chen, Robert Pilbrow, Michael Wilson, and J. Michael Owen. "Flow in a “Cover-Plate” Pre-Swirl Rotor-Stator System." In ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/97-gt-243.

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This paper describes a combined theoretical, computational and experimental study of the flow in an adiabatic pre-swirl rotor-stator system. Pre-swirl cooling air, supplied through nozzles in the stator, flows radially outward, in the rotating cavity between the rotating disc and a cover-plate attached to it, leaving the system through blade-cooling holes in the disc. An axisymmetric elliptic solver, incorporating the Launder-Sharma low-Reynolds-number k-ε turbulence model, is used to compute the flow. An LDA system is used to measure the tangential component of velocity, Vϕ, in the rotating cavity of a purpose-built rotating-disc rig. For rotational Reynolds numbers up to 1.2 × 106 and pre-swirl ratios up to 2.5, agreement between the computed and measured values of Vϕ is mainly very good, and the results confirm that free-vortex flow occurs throughout most of the rotating cavity. Computed values of the pre-swirl effectiveness (or the nondimensional temperature difference between the pre-swirl and blade-cooling air) agree closely with theoretical values obtained from a thermodynamic analysis of an adiabatic system.

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Deo, Hrishikesh V. "Compliant Plate Seals for Turbomachinery Applications." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64871.

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In this paper, a novel GE Compliant Plate Seal is proposed that consists of compliant plates attached to a stator in a circumferential fashion around a rotor. The compliant plates have a slot that extends radially inwards from the seal outer diameter, and an intermediate plate extends inwards into this slot from stator. This design is capable of providing passive hydrostatic feedback forces acting on the compliant plates that balance at a small tip-clearance. When the tip-clearance reduces below the equilibrium clearance, the hydrostatic lift forces cause the compliant plates to lift away from the rotor. Conversely when the tip-clearance increases above the equilibrium clearance, the hydrostatic blowdown forces cause the compliant plates to blow down towards the rotor. Due to this self-correcting behavior, this seal is capable of providing high differential pressure capability and low leakage within a limited axial span, and non-contact operation even in the presence of large rotor transients. Simplified CFD models have been developed to predict the leakage flow rates and hydrostatic lift and blowdown forces, and a design philosophy is proposed to predict the feedback phenomenon from the CFD models. The proposed models are validated and self-correcting behavior is demonstrated through experimental testing.

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Trivedi, Deepak, and Bernardo Kerr. "Flow Induced Dynamics of Plate Seals." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-90962.

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Abstract Plate seals can provide low leakage at rotor-stator interfaces with large pressure drops in turbomachinery within a limited axial span. When designed with a self-correcting hydrostatic feedback mechanism, non-contact operation could be achieved even in the presence of large rotor transients. Flow induced dynamical instability is one of the key design challenges in plate seals for rotor-stator sealing in turbomachinery. The instabilities are caused by potentially multiple flow induced vibration mechanisms operating during different flow regimes. This paper investigates mechanisms of vortex induced flutter in compliant plate seals, which happens when the vortex shedding frequency of the plates comes close to one of the natural frequencies of vibration of the structure. An experimental methodology based on optical flow analysis of high speed videography is proposed to characterize vibrations of the ensemble of plates (“leafpack”.) Experiments show that the compliant plates vibrate in the flow field with amplitude dependent on the pressure drop. Additionally, the vibrations of individual plates are highly coupled to each other, leading to phase-locking or phase-drifting depending on boundary conditions. The leafpack has a characteristic frequency and exhibits traveling wave phenomena under certain conditions of pressurization. Using experimental insights, plate seals are modeled as a ring of a large (∼103) number of locally coupled oscillators, with nonlinear stiffness arising from hydrostatic forces. A two-way coupling exists between the structural and fluid wake dynamics. Using center manifold reduction, the coupled fourth order dynamics of the system is reduced to second order and transform the equations into the normal form for investigating the possibility of mitigating flow induced vibrations through the phenomenon of amplitude death. Conditions under which successful induction of amplitude death could eliminate plate vibration in the mode under consideration is discussed.

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Adis, William E., Michael Mack, and Hrishikesh V. Deo. "Side Weld and Bend Method of Manufacturing Compliant Plate Seals." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-95087.

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Compliant Plate Seals are being developed for various turbomachinery sealing applications including gas turbines, steam turbines, aircraft engines and oil & gas compressors. These seals consist of compliant plates attached to a stator in a circumferential fashion around a rotor. The compliant plates have a slot that extends radially inwards from the seal outer diameter and an intermediate plate extends inwards into this slot from the stator. This design is capable of providing passive hydrostatic feedback forces acting on the compliant plates that balance at a small tip-clearance. Due to this self-correcting behavior, this seal is capable of providing high differential pressure capability and low leakage within a limited axial span, and robust non-contact operation even in the presence of large rotor transients. Manufacturing of Compliant Plate Seals is a challenging problem and in this paper, we describe the development of a novel manufacturing technique called Side Weld And Bend (SWAB). The compliant plates are tightly packed with alternating spacer shims in a straight line fixture and welded to a top-plate from the side along a straight line. After removal of the spacer shims, the welded assembly is bent to form an arcuate seal of a desired diameter. The Side Weld And Bend (SWAB) manufacturing method reduces distortion, deformity, differential shrinkage and other associated problems with welding across gaps between adjacent compliant plate seals as is typical in current manufacturing processes.

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Childs, Peter, and Carlos Pizarro de la Fuente. "An Investigation of Lock Plate Flow." In ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASMEDC, 2006. http://dx.doi.org/10.1115/gt2006-90652.

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Lock plates are used on some turbine disc assemblies to secure the location of the blades. The pressure ratio across blade roots and the associated clearances inevitably means that there is some leakage through the abutting mating surfaces of the lock plates. This flow is ejected into the corresponding stator well or rotor-stator disc wheelspace. The aim of this study was to investigate the level of penetration of this flow and therefore its potential impact on and interaction with the wheelspace flow and associated heat transfer. Given the low mass flow associated with this leakage, typically less than one percent of the mainstream annulus flow, generation of the validation data was undertaken using a representative wind tunnel slot array. This paper reports the experimental data and corresponding CFD flow predictions and discusses the resultant insight obtained. For the experiments and associated modeling undertaken it was found that the injected flow did not penetrate the cross flow boundary layer for either normal or inclined injection.

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Henderson, Gregory H., and Sanford Fleeter. "Forcing Function Effects on Unsteady Aerodynamic Gust Response: Part 2 — Low Solidity Airfoil Row Response." In ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/92-gt-175.

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The fundamental gust modeling assumption is investigated by means of a series of experiments performed in the Purdue Annular Cascade Research Facility. The unsteady periodic flow field is generated by rotating rows of perforated plates and airfoil cascades, with the resulting unsteady periodic chordwise pressure response of a downstream low solidity stator row determined by miniature pressure transducers embedded within selected airfoils. When the forcing function exhibited the characteristics of a linear-theory gust, as was the case for the perforated-plate wake generators, the resulting response on the downstream stator airfoils was in excellent agreement with the linear-theory models. In contrast, when the forcing function did not exhibit linear-theory gust characteristics, i.e., for the airfoil wake generators, the resulting unsteady aerodynamic response of the downstream stators were much more complex and correlated poorly with the linear-theory gust predictions. Thus, this investigation has quantitatively shown that the forcing function generator significantly affects the resulting gust response, with the complexity of the response characteristics increasing from the perforated-plate to the airfoil-cascade forcing functions.

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Pohl, Julien, Jeffrey A. Dixon, and Vincenzo Fico. "Turbine Stator Well Cooling: Improved Geometry Benefits." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-42658.

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Nowadays, it is common practice to expose engine components to air temperatures exceeding the thermal material limit in order to increase the overall engine performance and to minimise the engine specific fuel consumption (SFC). To avoid the overheating of the materials and thus the reduction of the component life, an internal flow system is designed to cool the critical engine parts and to protect them. As the coolant flow is bled from the compressor and not used for the combustion the amount of coolant is aimed to be minimised as much as possible to preserve the overall engine performance. Experiments as well as numerical simulations have shown that with the use of a deflector plate, the cooling flow is fed more directly into the disc boundary layer, allowing more effective use of less cooling air, leading to an improved engine efficiency. In this paper, the benefits of the use of a stationary deflector plate inside a turbine stator well (TSW) are presented. So far unpublished experimental data obtained from tests carried out in a two-stage turbine rig are presented. The main objective of this research has been to produce reliable methods for predicting the effects of geometry changes in this type of engine cavity, with a view to optimising the cooling flows required to maintain component integrity and life. Therefore, a numerical methodology is presented and validated against the experimental data. Steady and unsteady computational fluid dynamics (CFD) calculations of a sector model are used to determine whether fluid side flow distributions and heat transfer can be adequately represented, as well as to expose the limits of these approaches. The main annulus geometry is meshed with a multi-block structured mesh using the in-house code PADRAM. The cavity geometry is meshed once with a multi-block structured mesh using the commercial tool ANSYS ICEM and once with an unstructured mesh using the in-house code PADRAM. The CFD calculations are carried out with the commercial code FLUENT from ANSYS as well as the in-house code HYDRA. Finally, for the cavity with the deflector plate and no net ingestion, the steady state solution of the CFD is coupled to a finite element analysis (FEA) model created in the in-house code SC03 in order to take the conjugate effects into account. With this method the final non-adiabatic flow field inside the cavity as well as the final metal temperatures are obtained, which again are compared against thermocouple measured data in order to evaluate the accuracy of the numerical prediction method.

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Reports on the topic "STATOR PLATE"

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PAJUNEN, A. L. Weigh Station and Grid Plate Testing. Office of Scientific and Technical Information (OSTI), April 2000. http://dx.doi.org/10.2172/803036.

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Dunn, Floyd E., Lin-wen Hu, and Erik Wilson. The STAT7 Code for Statistical Propagation of Uncertainties In Steady-State Thermal Hydraulics Analysis of Plate-Fueled Reactors. Office of Scientific and Technical Information (OSTI), December 2016. http://dx.doi.org/10.2172/1349053.

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Pham, Son, Lin-wen Hu, and Erik Wilson. The STAT7 Code for Statistical Propagation of Uncertainties In Steady-State Thermal Hydraulics Analysis of Plate-Fueled Reactors. Office of Scientific and Technical Information (OSTI), July 2020. http://dx.doi.org/10.2172/1825880.

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Yang, Se, Dhongik Yoon, Lin-wen Hu, and Erik Wilson. The STAT7 Code for Statistical Propagation of Uncertainties in Steady State Thermal Hydraulics Analysis of Plate Fueled Reactors. Office of Scientific and Technical Information (OSTI), January 2023. http://dx.doi.org/10.2172/1923025.

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Liu, Edgar, Malgorzata Lagisz, Evelyne de Leeuw, and Hyungmo Yang. Place-based Health Interventions in NSW - A rapid review of evidence. SPHERE HUE Collaboratory, November 2022. http://dx.doi.org/10.52708/pbhi-el.

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This report describes a rapid review exercise on the place-based intervention approaches to improving the health and wellbeing outcomes of residents in the Australian state of New South Wales (NSW). The aim of this exercise is to inform the Cancer Institute NSW on their future policy and program developments in cancer prevention and screening. Specifically, it seeks to answer the following research questions: 1. What place-based interventions for health promotion and risk prevention and screening currently exist in NSW? 2. How effective have these interventions been in achieving their stated objectives?

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Palazotto, A. N., and L. N. Grummadi. Failure Characteristics of Sandwich Plates Under Static and Dynamic Loading. Fort Belvoir, VA: Defense Technical Information Center, October 1997. http://dx.doi.org/10.21236/ada338022.

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Connor, Robert J., and Cem Korkmaz. Fatigue Categorization of Obliquely Oriented Welded Attachments. Purdue University, 2020. http://dx.doi.org/10.5703/1288284317210.

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In current bridge design specifications and evaluation manuals from the American Association of State Highway and Transportation Officials (AASHTO LRFD) (AASHTO, 2018), the detail category for base metal at the toe of transverse stiffener-to-flange fillet welds and transverse stiffener-to-web fillet welds to the direction of the web and hence, the primary stress) is Category C′. In skewed bridges or various other applications, there is sometimes a need to place the stiffener or a connection plate at an angle that is not at 90 degrees to the web. As the plate is rotated away from being 90 degrees to the web, the effective “length” of the stiffener in the longitudinal direction increases. However, AASHTO is currently silent on how to address the possible effects on fatigue performance for other angles in between these two extremes. This report summarizes an FEA study that was conducted in order to investigate and determine the fatigue category for welded attachments that are placed at angles other than 0 or 90 degrees for various stiffener geometries and thicknesses. Recommendations on how to incorporate the results into the AASHTO LRFD Bridge Design Specifications are included in this report.

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guo, wenxuan, WH Chen, F. Wu, WQ Qian, SY Zhang, JS Yu, K. Tian, RJ Zhuang, and Y. Pan. Can locked fibula nail replace plate fixation for treatment of acute ankle fracture? A protocol for systematic review and meta-analysis of randomized controlled trials. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, July 2022. http://dx.doi.org/10.37766/inplasy2022.7.0094.

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Review question / Objective: We seek to conduct a meta-analysis of relevant studies to evaluate and compare functional outcomes and complication rates between locked fibula intramedullary nail fixation and plate fixation for treatment of ankle fractures. Condition being studied: Ankle fractures, with an incidence rate of 4.22/10, 000 person-years in the United States, are one of the most common lower extremity fractures. Currently, the standard surgical treatment approaches for unstable ankle fractures involves open reduction and internal fixation (ORIF) with plates and screws. However, ORIF has resulted in little efficacy during treatment of fractures since the 1960s, while plate and screw fixation has also been associated with several complications. Previous studies have shown that closed reduction and internal fixation (CRIF) with fibula intramedullary nail (IMN) has achieved satisfactory efficacy in treatment of ankle fractures, and is associated with low complication rates. Additionally, a systematic review showed that a locked intramedullary nail (LIMN) device provides better stability and rotation control, thereby reducing the risk of nail migration and loss of fixation, compared to unlocked nails. Therefore, a meta-analysis is imperative to provide evidence on whether LIMN can replace PF for treatment of ankle fractures, owing to an increase in related studies that have been published in recent years.

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Elsbernd, Amanda J., Anna K. Johnson, Kenneth J. Stalder, Robert F. Fitzgerald, Locke A. Karriker, Steven J. Hoff, and Gang Sun. Designing an Objective Static Force Plate to Measure Severity of Lameness in Multi-Parity Sows. Ames (Iowa): Iowa State University, January 2011. http://dx.doi.org/10.31274/ans_air-180814-274.

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Poretsky, S., B. Imhoff, and K. Michielsen. Terminology for Benchmarking Link-State IGP Data-Plane Route Convergence. RFC Editor, November 2011. http://dx.doi.org/10.17487/rfc6412.

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