Relevant bibliographies by topics / Hydraulic

Academic literature on the topic 'Hydraulic'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 April 2023

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Journal articles on the topic "Hydraulic"

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Ferguson, R. I. "Hydraulics and hydraulic geometry." Progress in Physical Geography: Earth and Environment 10, no. 1 (March 1986): 1–31. http://dx.doi.org/10.1177/030913338601000101.

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Gisonni, Corrado. "Applied Hydraulics and Hydraulic Structures." Journal of Applied Water Engineering and Research 3, no. 1 (January 2, 2015): 1–2. http://dx.doi.org/10.1080/23249676.2015.1031981.

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Zhong, Xiang Qiang, and Li Dong Liang. "Mechanical-Hydraulic Coupling Simulation for Hydraulic Excavator Working Mechanism." Advanced Materials Research 538-541 (June 2012): 494–97. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.494.

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Hydraulic excavator is a typical and complicated engineering machine by combination of mechanical, control and hydraulic system. It is very important for coupling analysis by use of multiple simulation tools. Hydraulic excavator mechanical model was constructed based on Pro/E 4.0. Virtual prototype of hydraulic excavator was finished by use of ADAMS interface function and carried on a lot of kinematics and dynamics simulation analysis. Hydraulic cylinder circuit was derivated based on ADAMS/Hydraulics. Working principle of bucket arm hydraulic cylinder was analyzed. Mechanical and hydraulic simulation of bucket rod hydraulic cylinder was finished. Bucket rod hydraulic cylinder velocity was obtained. Simulation results show coupling simulations have certain theory value and practical significance. They can provide evidence for trial and optimization of physical prototype.
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Järvelä, Juha, and Terhi Helmiö. "Hydraulic considerations in restoring boreal streams." Hydrology Research 35, no. 3 (June 1, 2004): 223–35. http://dx.doi.org/10.2166/nh.2004.0016.

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The physical habitat that controls ecosystem functioning is determined by local hydraulics and channel morphology. Hydraulic field studies were conducted in a boreal stream (1) to test the hypothesis that the local hydraulic conditions are determined by cross-sectional geometry and flow resistance in boreal conditions by analysing the relationship between flow velocities, cross-sectional geometry and flow resistance, and (2) to suggest success criteria for the restoration of local hydraulic conditions. Results suggest that, in the case of small channels, cross-sectional geometry and flow resistance are weakly interconnected and influenced by factors such as local roughness elements and channel forms. The study showed that both flow resistance and cross-sectional geometry are vital factors in determining local hydraulics. In stream restoration, a design based on consideration of only one of these two factors is inadequate and may result in a failure to replicate natural hydraulic conditions. Simple success criteria for the restoration of local hydraulics are developed.
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Christoffersen, Bradley O., Manuel Gloor, Sophie Fauset, Nikolaos M. Fyllas, David R. Galbraith, Timothy R. Baker, Bart Kruijt, et al. "Linking hydraulic traits to tropical forest function in a size-structured and trait-driven model (TFS v.1-Hydro)." Geoscientific Model Development 9, no. 11 (November 24, 2016): 4227–55. http://dx.doi.org/10.5194/gmd-9-4227-2016.

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Abstract. Forest ecosystem models based on heuristic water stress functions poorly predict tropical forest response to drought partly because they do not capture the diversity of hydraulic traits (including variation in tree size) observed in tropical forests. We developed a continuous porous media approach to modeling plant hydraulics in which all parameters of the constitutive equations are biologically interpretable and measurable plant hydraulic traits (e.g., turgor loss point πtlp, bulk elastic modulus ε, hydraulic capacitance Cft, xylem hydraulic conductivity ks,max, water potential at 50 % loss of conductivity for both xylem (P50,x) and stomata (P50,gs), and the leaf : sapwood area ratio Al : As). We embedded this plant hydraulics model within a trait forest simulator (TFS) that models light environments of individual trees and their upper boundary conditions (transpiration), as well as providing a means for parameterizing variation in hydraulic traits among individuals. We synthesized literature and existing databases to parameterize all hydraulic traits as a function of stem and leaf traits, including wood density (WD), leaf mass per area (LMA), and photosynthetic capacity (Amax), and evaluated the coupled model (called TFS v.1-Hydro) predictions, against observed diurnal and seasonal variability in stem and leaf water potential as well as stand-scaled sap flux. Our hydraulic trait synthesis revealed coordination among leaf and xylem hydraulic traits and statistically significant relationships of most hydraulic traits with more easily measured plant traits. Using the most informative empirical trait–trait relationships derived from this synthesis, TFS v.1-Hydro successfully captured individual variation in leaf and stem water potential due to increasing tree size and light environment, with model representation of hydraulic architecture and plant traits exerting primary and secondary controls, respectively, on the fidelity of model predictions. The plant hydraulics model made substantial improvements to simulations of total ecosystem transpiration. Remaining uncertainties and limitations of the trait paradigm for plant hydraulics modeling are highlighted.
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Windisch, Étienne J. "The hydraulics problem in slope stability analysis." Canadian Geotechnical Journal 28, no. 6 (December 1, 1991): 903–9. http://dx.doi.org/10.1139/t91-107.

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Hydraulic pressures and forces are obtained on a typical slice, as used in current methods of slope stability analysis, under hydrostatic and flowing groundwater conditions. It is shown that current methods do not satisfy some basic hydraulics and soil mechanics principles. The effective normal stress on the lower boundary of a slice is shown to be underestimated, and the resultant hydraulic force is not accounted for adequately. Key words: effective stress, hydraulic pressure, hydraulic gradient, hydraulic force, slope stability.
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Shallat, Todd, and Gunther Garbrecht. "Hydraulics and Hydraulic Research: A Historical Review." Technology and Culture 29, no. 4 (October 1988): 950. http://dx.doi.org/10.2307/3105074.

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Parekh, Siddharth, Ali Pilehvari, and Robert Serth. "Prediction of Fluid Behavior Using Generalized Hydraulic Calculation Method in Hydraulic Fractures." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 81, no. 1 (March 5, 2021): 120–30. http://dx.doi.org/10.37934/arfmts.81.1.120130.

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Hydraulic fracturing has been used as one of the stimulation techniques to economically increase oil and gas production by creating small cracks in subsurface geologic formations to allow oil or gas to move toward a producing well. Hydraulics plays a vital role in many oil field operations including drilling, completion, fracturing and production. In the case of fracturing, however, the role of hydraulics becomes important since optimized hydraulics can minimize the cost and conversely, any miscalculations may cause problems such as the fluid loss or may potentially even lead to loss of the well. The current methods of the hydraulic calculation for non-Newtonian fluids necessitate determination of the robust model. This paper presented a new method for calculating pressure losses in the hydraulic fractures. The objective of this study was to develop the generalized model for hydraulic calculation for non-Newtonian fluid and run the case studies for the model validation. In the present work, detailed algorithm for the hydraulic calculation has been developed and then programmed in C++. The only input to the program is the raw rheological data, shear stress versus shear rate and the geometrical characteristics of the slit. Model validation with the new method has established a very small percentage difference between the values predicted by the model and experimental data. The results demonstrate that the new method is accurately predicting the pressure drop in both laminar and turbulent flow regimes. It is shown that the fluid behavior is more accurately represented using the new method than that with the standard fluid models available in the petroleum industry. Further validation and development to be carried out using experimental data for variety of fluid types.
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Abduazizov, N. A., Zh B. Toshov, and A. Sh Zhuraev. "THE RESEARCH OF "HYDROBANK-COOLER" SYSTEMS OF HYDRAULIC POWER UNITS OF HYDRAULIC MINING MACHINES." EurasianUnionScientists 4, no. 2(71) (2020): 4–8. http://dx.doi.org/10.31618/esu.2413-9335.2020.4.71.598.

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Today, powerful expensive equipment is used in mining enterprises. Downtime, breakdowns and repairs of hydraulic mining machines lead to large financial losses of mining enterprises. Mechanical particles, microdroplets of water and air bubbles that fall into hydraulic fluids during operation, significantly affect the properties of the working fluid. In this regard, maintaining the quality of the working fluid used in expensive hydraulic mining machines is one of the most important tasks of modern hydraulics.
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Javaux, Mathieu, and Andrea Carminati. "Soil hydraulics affect the degree of isohydricity." Plant Physiology 186, no. 3 (March 31, 2021): 1378–81. http://dx.doi.org/10.1093/plphys/kiab154.

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A soil–plant hydraulic model shows that the degree of isohydricity is constrained by below-ground hydraulic limitations and that the shape of plant water potential (WP) curve depends on soil hydraulics.
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Dissertations / Theses on the topic "Hydraulic"

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Nezbeda, Filip. "Hydraulický pohon kontejnerových nůžek CNS 730/190 MTC." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230384.

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This work includes design of the drive hydraulic shears. The objective is to replace diesel-engine for electric motor. There is a description of the machine and its technological shearing process, types of hydraulic drives and their applications. The work includes the design, description and calculation of hydraulic power unit with an electric motor in two versions. Then there is evaluation of alternatives and select one to which they are processed further structural elements.
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Skolds, Dan Michael. "Alluvial stream bed adjustments downstream of hydraulic structures." Thesis, Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/19435.

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Tranová, Kateřina. "Hydraulická analýza vodovodní sítě městské části Brno - Ivanovice." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265396.

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This diploma´s thesis aims to model the hydraulic model of the Brno – Ivanovice water supply system. The software MIKE URBAN for model hydraulic model of water supply system was used. It was performed a simulation of the various states of loading. The water supply system was assessment of pressure ratios. The outcome of this work is calibrated hydraulic model of water supply system. The appendix consists also of drawings, which represented pressure ratios, which are situated on water supply system. On the fourth drawing is described transparent situation of Brno-Ivanovice water supply system.
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Škarvada, Radoslav. "Hydraulický přidržovač/vyhazovač." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228139.

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Diploma thesis solves project of the hydraulic blankholder/ejector for the mechanical press. On the basis of defined parameters are carried out the analysis of crank mechanism, necessary calculations, analyse of all suggested alternatives, project of hydraulic system and specification of hydraulic components. Tutorials took place in company ŽĎAS, a.s. and project is performed on the basis of the suggestions, advices and recommendations of Hydraulic systems department of this company.
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Bártek, Petr. "Nová koncepce hydraulického pohonu CPB." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230510.

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The main objective of this master's thesis is to design the new conception of hydraulic drive of the baling press CPB 100 with application of modern tendencies in the field of hydraulic engineering. This thesis contains design and calculations of new hydraulic drive, hydraulic circuit diagram and the list of hydraulic elements that are used. Moreover this thesis includes the design of an electrical control and the design of hydraulic block and manifold.
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Davis, Gary Stanley. "A laboratory investigation of a rock riprap control structure in an open channel." Thesis, Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/21006.

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Jaipal, Prithviraj. "Hydraulic hybrids." Thesis, KTH, Fordonsdynamik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-224159.

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Conventional IC Engine powertrain layouts in vehicles tend to consume considerable amounts of fuel and generate emissions that are harmful to the environment. Newer technologies have enabled the development of sustainable vehicle layout designs that favor a reduction in the exhaust emissions and energy consumption without compromising the vehicle’s performance. Hybrid vehicles and electric vehicles are the torch bearers for this development. Although electric vehicles feature high performance at lower emissions, they are generally limited by their range and high battery costs. Development of countries to equip for this electrification is another important factor here as with the development of more electric vehicles comes the problems associated with charging, like charging stations, charge scheduling (from power grid because of the high toll), etc. Hybrid electric vehicles are energy efficient and reduce the emissions considerably but their costs are substantially higher. Along with the higher efficiency generated by the electric machines, the possibility of regenerating braking energy reduces the energy consumption and increases the energy efficiency of the conventional layouts. Hydraulic hybrids in the recent years have gained recognition for their advantages and are known for being the cheaper alternative for hybridizing heavy vehicles. The ability of storing regenerative braking energy in this fluid form allows for higher cyclic efficiency when compared to that of the electrical means of storing energy. This thesis focuses on the design and modeling of the hydraulic hybrids using MATLAB/SIMULINK® to construct models depicting the use of the vehicles under the selected drive cycles. Regenerative braking has been one of prime focus for improving the range and minimising the energy consumption of the vehicle along with high operational efficiencies of the operating components. The thesis takes into account two cases, one with the case of a medium duty vehicle with a conventional  IC Engine layout and the other with the case of electric forklifts. The two cases are compared with their hydraulic hybrid layouts along the lines of energy consumption, operational efficiencies and range. Through the design of these simulations, a comparative analysis of the hydraulic hybrid to the electric hybrid is provided for the case of the medium duty vehicle and the benefits of having an electric hydraulic hybrid layout designed for the electric forklift applications are studied.
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Lukeštík, Přemysl. "Hydraulická soustava hydraulické ruky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231210.

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This thesis deals with the design of the hydraulic system of hydraulic crane. It focuses on the description of the individual elements of the existing hydraulic system, analysis of forces, calculate diameters of linear hydraulic motors and their pressures and flow rates.
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Kluka, Ladislav. "Konstrukce hydraulické ohýbačky ocelových profilů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-229274.

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This master’s thesis deals with design of a hydraulics bending machine. Bending machine will be used primarily for bending reinforcement bars in the shape of stapes. It consists of bending, sliding and chute system, which are located in the machine frame. Drive of each system is provided by a rotary and two linear hydraulic motors. Then there is described a hydraulic system and selection of its most important parts. Work is supplemented by visual documentation in the form of images of individual systems were processed in a CAD system Inventor 2010
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Vavrla, Petr. "Hydraulická drapáková lopata." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228812.

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In those work am intent on construction hydraulic grab, his two dipper, but largely supporting frame, that is of mostly effortful. Further am suggested and drew up hydraulic perimeter for operating dipper and rotation about perpendicular axes
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Books on the topic "Hydraulic"

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Applied hydraulic transients. New York: Springer, 2014.

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Applied hydraulic transients. 2nd ed. New York: Van Nostrand Reinhold, 1987.

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Webtec Hydraulics, Webtec Products Limited. Webtec hydraulics: Mobile-industrial-agricultural hydraulic equipment : 1993. St. Ives, Cambridge: Webtec Hydraulics, 1993.

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Hwang, Ned H. C. Fundamentals of hydraulic engineering systems. 3rd ed. Upper Saddle River, N.J: Prentice-Hall, 1996.

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1954-, Hita Carlos E., ed. Fundamentals of hydraulic engineering systems. 2nd ed. Englewood Cliffs, N.J: Prentice-Hall, 1987.

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J, Houghtalen Robert, ed. Fundamentals of hydraulic engineering systems. 3rd ed. Upper Saddle River, N.J: Prentice Hall, 1996.

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Osman, Akan A., Hwang Ned H. C, and Hwang Ned H. C, eds. Fundamentals of hydraulic engineering systems. 4th ed. Upper Saddle River, NJ: Pearson Education, 2010.

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Walters, R. B. Hydraulic and Electric-Hydraulic Control Systems. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-015-9427-1.

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Walters, R. B. Hydraulic and Electro-Hydraulic Control Systems. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3840-6.

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Walters, R. B. Hydraulic and electro-hydraulic control systems. London: Elsevier Applied Science, 1991.

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Book chapters on the topic "Hydraulic"

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Harr, Jeffrey N., Philip F. Stahel, Phillip D. Levy, Antoine Vieillard-Baron, Yang Xue, Muhammad N. Iqbal, Jeffrey Chan, et al. "Hydraulic Flux." In Encyclopedia of Intensive Care Medicine, 1159. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-00418-6_3150.

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Vieux, Baxter E. "Hydraulic Roughness." In Water Science and Technology Library, 101–14. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-024-0930-7_6.

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Bungay, Henry R. "Hydraulic Networks." In Environmental Systems Engineering, 109–20. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5507-0_6.

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Gülich, Johann Friedrich. "Hydraulic Forces." In Centrifugal Pumps, 575–648. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-40114-5_9.

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Rossi, Cesare, and Flavio Russo. "Hydraulic Motors." In History of Mechanism and Machine Science, 105–19. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-44476-5_9.

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Walters, R. B. "Hydraulic Actuators." In Hydraulic and Electric-Hydraulic Control Systems, 10–12. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-015-9427-1_4.

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French, Michael. "Hydraulic Pumps." In Form, Structure and Mechanism, 175–90. London: Macmillan Education UK, 1992. http://dx.doi.org/10.1007/978-1-349-21950-6_9.

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Bock, Wolfgang. "Hydraulic Oils." In Lubricants and Lubrication, 345–420. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2017. http://dx.doi.org/10.1002/9783527645565.ch11.

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Keaton, Jeffrey R. "Hydraulic Action." In Selective Neck Dissection for Oral Cancer, 1. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-12127-7_158-1.

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Eberhardt, Erik, and Afshin Amini. "Hydraulic Fracturing." In Encyclopedia of Earth Sciences Series, 1–6. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-12127-7_159-1.

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Conference papers on the topic "Hydraulic"

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Ratchakit, Monchai, Thaworn Ratrongmuang, Sombat Arsanani, Siripong Thumjin, and Patipan Keanpornpipat. "Hydraulics Demonstration Kit for Car Hydraulic Technician Training." In The 14th National Conference on Technical Education and The 9th International Conference on Technical Education. KMUTNB, Bangkok, Thailand, 2022. http://dx.doi.org/10.14416/c.fte.2022.06.019.

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Guglielmino, Emanuele, Claudio Semini, Helmut Kogler, Rudolf Scheidl, and Darwin G. Caldwell. "Power hydraulics - switched mode control of hydraulic actuation." In 2010 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2010). IEEE, 2010. http://dx.doi.org/10.1109/iros.2010.5653181.

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Manring, Noah D. "Digital Hydraulics: A Theoretical Study Comparing Hydraulic Power Units." In BATH/ASME 2016 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/fpmc2016-1716.

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Recent research has been used to identify efficiency improvements that may be obtained by utilizing on-off hydraulic valves in the place of traditional hydraulic valves. These efficiency improvements reduce throttling losses in the valve by using wide-open valve positions that are intermittently turned on and off. While this efficiency idea has emerged with great interest among some, there are still those who remain doubtful about the efficiency improvements that have been claimed and anecdotal concerns continue to be voiced at conferences and in hallway discussions within industry. This paper is being written to address the subject from a theoretical perspective. In the analysis of this paper, the efficiency equations for an on-off valve will be derived and compared to the efficiencies of valves that are employed in pressure relief systems, pressure compensating systems, and load sensing systems. In conclusion, it is shown that valves operating in load sensing systems are always the most efficient valves, while digital valves are often the next most efficient design except during low flow conditions when the valve in a pressure compensating system may occasionally be more efficient than the digital valve. It is shown in this research that valves used in pressure relief systems are always the most inefficient design.
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Halat, John. "Hydraulic Component for High Pressure Hydraulic Systems." In SAE Aerospace Technology Conference and Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1986. http://dx.doi.org/10.4271/861677.

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Xue, Rongping, He Wang, Zhenyu Xie, Deping Chen, Ting Cao, and Hao Zou. "Research on hydraulic system of hydraulic elevator." In 2016 6th International Conference on Machinery, Materials, Environment, Biotechnology and Computer. Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/mmebc-16.2016.280.

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Remmelmann, Andreas, and Hubertus Murrenhoff. "Environmentally Acceptable Hydraulic Pressure Media - New Chances for Mobile Hydraulics." In SAE Earthmoving Industry Conference & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1998. http://dx.doi.org/10.4271/981515.

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Naepfel, Rainer. "Special Applications in Mobile Hydraulics Including Electro-Hydraulic Proportional Technology." In 1985 SAE International Off-Highway and Powerplant Congress and Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1985. http://dx.doi.org/10.4271/851492.

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Klusch, Matthias, Ankush Meshram, Andreas Schuetze, and Nikolai Helwig. "iCM-Hydraulic." In SEMANTiCS '15: 11th International Conference on Semantic Systems. New York, NY, USA: ACM, 2015. http://dx.doi.org/10.1145/2814864.2814865.

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Oliveira e Silva, Dimitri, Marcos Paulo Nostrani, Rodrigo Simões Lopes Junior, and Victor Juliano De Negri. "Digital Hydraulic Actuators: An Alternative for Aircraft Control Surfaces." In Workshop on Innovative Engineering for Fluid Power. Linköping University Electronic Press, 2023. http://dx.doi.org/10.3384/ecp196002.

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In the last decades, digital hydraulics has emerged as a new alternative for the development of more efficient hydraulic systems, where the effects of throttling losses and internal leakages are minimized through the use of conventional hydraulic components associated in parallel or through switching hydraulics. In the aviation industry, hydraulic systems are commonly applied to control highly relevant systems, such as landing gear and flight control surfaces. In this context, digital hydraulics can be used as an alternative solution to improve the energy efficiency of aircraft hydraulic systems. Based on that, this paper aims to present three new hydraulic actuators for application on aircraft flight control surfaces using digital hydraulics. The actuators are being studied by the Laboratory of Hydraulic and Pneumatic Systems - LASHIP of the Federal University of Santa Catarina - UFSC and are called Digital Hydraulic Actuator - DHA, Digital Electro Hydrostatic Actuator - DEHA and Variable Speed Digital Electro Hydrostatic Actuator - VSDEHA. The simulation results show that the actuators developed can be 23 times more efficient than conventional servo-hydraulic actuators, with equivalent dynamic characteristics, demonstrating the potential for application of these new actuators in aeronautical systems.
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Danaee, Siavash, Jarmo Nurmi, Tatiana Minav, Jouni Mattila, and Matti Pietola. "Direct Position Control of Electro-Hydraulic Excavator." In BATH/ASME 2018 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/fpmc2018-8896.

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Position measurement in the electro-hydraulic systems is feasible via the utilization of physical sensors. An improvement in technology has led to the manufacturing of high accurate position sensors for direct position control. This paper proposes utilization of direct position control in an electro-hydraulic system with a new hydraulic zonal system architecture implemented with Direct Driven Hydraulics. It was mentioned in early study that this hydraulic system architecture as a replacement for the traditional valve-based hydraulic systems, has higher energy efficiency rate. In this study, the simulation implementation and experimental verification of Direct Driven Hydraulics (DDH) will be investigated for a micro excavator test case from position control point of view. Results demonstrated that the implementation of DDH in an excavator case will lead to maximum 5 cm error in a single-cycle movement.
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Reports on the topic "Hydraulic"

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McKnight, C., David May, and Keaton Jones. Numerical analysis of dike effects on the Mississippi River using a two-dimensional Adaptive Hydraulics model (AdH). Engineer Research and Development Center (U.S.), November 2022. http://dx.doi.org/10.21079/11681/46120.

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This report describes the hydraulic effects of dikes on water surface elevation (WSE) and velocities in the Mississippi River near Vicksburg, MS, from Interstate 20 to Highway 80 using a previously calibrated 2D Adaptive Hydraulics numerical model. Dike heights and their associated hydraulic roughness values were varied to quantify the overall effects of adjustments to dike fields. Steady flows characterized as low, medium, and high conditions were simulated. The WSE and velocity difference plots were generated to illustrate the hydraulic effects on the river under all scenarios discussed above. Overall, the dike adjustments had negligible impacts on WSEs and showed minimal effects on velocities on a system-wide scale.
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2

Riveros, Guillermo, and Hussam Mahmoud. Underwater carbon fiber reinforced polymer (CFRP)–retrofitted steel hydraulic structures (SHS) fatigue cracks. Engineer Research and Development Center (U.S.), March 2023. http://dx.doi.org/10.21079/11681/46588.

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Recent advances in the use of fiber-reinforced polymers (FRP) to retrofit steel structures subjected to fatigue cracks have shown to be a viable solution for increasing fatigue life in steel hydraulic structures (SHS). Although several studies have been conducted to evaluate the use of FRP for retrofitting metal alloys and the promising potential of such has been well-demonstrated, the application has never been implemented in underwater steel structures. This Coastal and Hydraulics Engineering Technical Note presents the implementation of FRP patches to repair fatigue cracks at Old Hickory Lock and Dam miter gate.
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3

Clifton, W. B., and A. Beitelman. Lubricants for Hydraulic Structures. Fort Belvoir, VA: Defense Technical Information Center, August 1989. http://dx.doi.org/10.21236/ada213260.

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4

Skone, Timothy J. Hydraulic Fracturing Water Delivery. Office of Scientific and Technical Information (OSTI), October 2011. http://dx.doi.org/10.2172/1509070.

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5

Skone, Timothy J. Well hydraulic fracture completion. Office of Scientific and Technical Information (OSTI), March 2015. http://dx.doi.org/10.2172/1509468.

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6

Curran, Kelsey Leigh Forde, Holly Colleen Chamberlin, and Timothy Scott Stirrup. SWiFT Hydraulic System FMEA. Office of Scientific and Technical Information (OSTI), September 2016. http://dx.doi.org/10.2172/1562630.

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7

NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA. Portable Hydraulic Power Source. Fort Belvoir, VA: Defense Technical Information Center, September 1990. http://dx.doi.org/10.21236/ada242720.

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8

Yeggy, Bret, Cody Allen, Rob Davis, Chad Dolphin, Joseph R. Vanstrom, and Jacek A. Koziel. Modular Hydraulic Test Bench. Ames: Iowa State University, Digital Repository, April 2017. http://dx.doi.org/10.31274/tsm416-180814-20.

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9

McElwee, Carl D., Brett R. Engard, Brian J. Wachter, Shane A. Lyle, John Healey, and J. F. Devlin. Hydraulic Tomography and High-Resolution Slug Testing to Determine Hydraulic Conductivity Distributions. Fort Belvoir, VA: Defense Technical Information Center, February 2011. http://dx.doi.org/10.21236/ada544869.

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Sharma, Shashi K., Lois J. Gschwender, Carl E. Snyder, Cecere Jr, and Gregory J. B-1 Aircraft Main Hydraulic Pump Tests With MIL-H-87257 Hydraulic Fluid. Fort Belvoir, VA: Defense Technical Information Center, June 1998. http://dx.doi.org/10.21236/ada359968.

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