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Relevant bibliographies by topics / Strains and stresses – Analysis

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Academic literature on the topic 'Strains and stresses – Analysis'

Author: Grafiati

Published: 29 June 2021

Last updated: 10 February 2022

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Journal articles on the topic "Strains and stresses – Analysis"

1

Hyde, T. H., R. Sabesan, and S. B. Leen. "Approximate Prediction Methods For Multiaxial Notch Stresses and Strains Under Elastic-Plastic and Creep Conditions." Journal of Strain Analysis for Engineering Design 40, no. 6 (August 1, 2005): 535–48. http://dx.doi.org/10.1243/030932405x16016.

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This paper describes general techniques for predicting multiaxial notch stresses and strains under elastic-plastic and creep conditions. The Neuber method, which is often used in elastic-plastic analysis, has been adapted and extended for predicting creep equivalent notch stresses and strains, based on a time-stepping integration scheme. A linear interpolation method, often used in creep analysis, is adapted and extended for predicting elastic-plastic equivalent stresses and strains. Then notch principal stresses and strains are obtained by applying plasticity theory in combination with assumptions concerning the ratios of the stress or strain components. The accuracy of the predicted equivalent and principal stress and strain values are assessed by comparing predictions based on them with results obtained from finite element analyses.

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Korsunsky, A. M. "Eigenstrain analysis of residual strains and stresses." Journal of Strain Analysis for Engineering Design 44, no. 1 (December 16, 2008): 29–43. http://dx.doi.org/10.1243/03093247jsa423.

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Ghasemi Nejhad, Mehrdad N., Chiling Pan, and Hongwei Feng. "Intrinsic Strain Modeling and Residual Stress Analysis for Thin-Film Processing of Layered Structures." Journal of Electronic Packaging 125, no. 1 (March 1, 2003): 4–17. http://dx.doi.org/10.1115/1.1512295.

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Residual stresses develop due to intrinsic and extrinsic strains that form during the processing. Extrinsic strains can be determined using coefficient of thermal expansion, material properties, and processing conditions. An “Equivalent Reference Temperature (ERT)” technique is described and used to model and evaluate the intrinsic strains. piezoelectric microelectromechanical systems (P-MEMS) are considered in this work. Laminate theory with three-dimensional state of stress and strain is used to evaluate residual stresses using the ERT model. In finite element analysis (FEA), the residual stresses and strains of multi-layer P-MEMS structures deposited layer-by-layer during processing, are simulated using the “element birth-and-death” approach. The evaluated residual stresses for a simplified geometry using ANSYS three-dimensional FEA and analytical analysis employing three-dimensional laminate theory are presented along with their corresponding experimental results. A user-friendly software based on the 3-D laminate theory is developed and installed on the Internet. The “equivalent reference temperature” as well as residual stresses and strains can be determined using this software. The level of residual stresses and strains of P-MEMS depend upon various factors such as geometrical design, material selection, and process conditions.

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Xie, Jian Feng. "Finite Element Analysis on Stress and Strain of Protected Fiber Bragg Grating." Advanced Materials Research 148-149 (October 2010): 1639–42. http://dx.doi.org/10.4028/www.scientific.net/amr.148-149.1639.

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The stresses and strains on the protected FBG and protected layer under varied temperature were analyzed in theory. In order to verify the theoretical analysis of stress and strain,a finite element analysis software(ANSYS) was used to simulate the stresses and strains on the protected FBG and protected layer. Both simulation and theoretical analysis are show that the strain and stress on protected layer in r direction decreases with the increasing of radius(r), while the strain and stress in direction increases with the increasing of radius(r) . The results of theoretical analysis matches the ones form simulations well.

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Zhang, Min, and Xitian Tian. "Residual stresses and strains analysis in press-braking bending parts considering multi-step forming effect." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 234, no. 4 (November 1, 2019): 788–800. http://dx.doi.org/10.1177/0954405419883053.

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Press-braking bending is a multi-step bending process and widely applied in the aerospace industry. Residual stresses and strains generated during the forming process play an important role in determining its forming parameters and bending path. This work aims to analyze the residual stresses and strains in press-braking bending parts using both the theoretical method and numerical method. First, the analytical model of residual stress and strain is established based on the elastic–plastic bending theory. Second, a fully finite element model of press-braking bending has been developed, and a procedure to simulate the multi-step bending process is presented by using the elastic–plastic large deformation finite element method. The simulation results are then compared with three-point bending experiments in terms of forming force and final shapes of the bent specimens, and excellent agreement is achieved. Finally, the results calculated from the analytical model are compared with the numerical results. The distributions of residual stresses and strains on the finished plate along the length and thickness direction, and particularly the multi-step forming effect on residual stresses and strains, are discussed. It is found that the residual stresses and strains decrease at the initial loading position along the thickness direction during the forming process of subsequent loading positions. With the same punch displacement, the residual stresses and strains at the initial loading position are less than those at the subsequent bending position.

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Xie, Jian Feng. "Finite Element Analysis on Stress and Strain of Embedded Fiber Bragg Grating." Advanced Materials Research 148-149 (October 2010): 1634–38. http://dx.doi.org/10.4028/www.scientific.net/amr.148-149.1634.

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After FBG was protected and embedded into cement mortar, the stresses and strains on the FBG ,protected layer and cement mortar under varied temperature were analyzed in theory. In order to verify the theoretical analysis of stress and strain,a finite element analysis software(ANSYS)was used to simulate the stresses and strains on the FBG ,protected layer and cement mortar. The results of theoretical analysis matches the ones form simulations well.

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Klochkov, Yuriy V., Anatoliy P. Nikolaev, Tatiana A. Sobolesvskaya, and Mikhail Yu Klochkov. "Comparative Analysis of Plasticity Theory Algorithms in Finite-Element Calculations of the Rotation Shell." Materials Science Forum 974 (December 2019): 608–13. http://dx.doi.org/10.4028/www.scientific.net/msf.974.608.

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Comparative analysis of the use of the defining equations of plasticity theories obtained at the loading step in three ways is performed. In the first method, the relations between strains increments and stresses increments are obtained by differentiating the governing equations of the small elastic-plastic deformations theory between full stresses and strains. In the second method, the authors based on the proportionality hypothesis between the component deviators of strains increments and the component deviators of stresses increments without separating the incremental strain into elastic and plastic parts obtain the determining equations at the loading step. In the third method, the relations between the incremental strain and the stresses increment of the plastic flow theory are used on the basis of the hypothesis about the proportionality of the plastic deformations increments to the components of the stress deviator. Based on the analysis of algorithms for obtaining the constitutive relations and the analysis of the numerical results of the calculation example, preference is given to the second method of obtaining expressions between stress increments and strain increments without separating the latter into elastic and plastic parts.

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Xie, Jian Feng. "Finite Element Analysis on Stress and Strain of Nickel Electroless Plated Fiber Bragg Grating." Advanced Materials Research 383-390 (November 2011): 3893–97. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.3893.

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After FBG was nickel electroless plated, the stresses and strains on the FBG and nickel eclectroless plated layer under varied temperature were analyzed in theory. In order to verify the theoretical analysis of stress and strain,a finite element analysis software(ANSYS) was used to simulate the stresses and strains on the FBG and nickel ececltroless plated layer. The results of theoretical analysis matches the ones form simulations well.

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Safari, Maedeh, Shahrokh Shojaei, Pedram Tehrani, and Alireza Karimi. "A patient-specific finite element analysis of the anterior cruciate ligament under different flexion angles." Journal of Back and Musculoskeletal Rehabilitation 33, no. 5 (September 17, 2020): 811–15. http://dx.doi.org/10.3233/bmr-191505.

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BACKGROUND: The main responsibility of the anterior cruciate ligament (ACL) is to restore normal knee kinematics and kinetics. Although so far different research has been carried out to measure or quantify the stresses and strains in the ACL experimentally or numerically, there is still a paucity of knowledge in this regard under different flexion angles of the tibiofemoral knee joint. OBJECTIVE: Understanding the stresses and strains within the ACL under various loading and boundary conditions may have a key asset for the development of an optimal surgical treatment of ACL injury that can better restore normal knee function. This study aimed to calculate the stresses and strains within the ACL under different flexion angles using a patient-specific finite element (FE) model of the human tibiofemoral knee joint. METHODS: A patient-specific FE model of the human tibiofemoral knee joint was established using computed tomography/magnetic resonance imaging data to calculate the stresses and strains in the ACL under different flexion angles of 0, 10, 20, 30, and 45∘. RESULTS: Although the role of the flexion angle in the induced stresses and strains of the ACL was insignificant, the highest stress and strain were observed at the flexion angle of 0∘. The concentration of the stresses and strains regardless of the flexion angles were also located at the proximal end of the ACL, where the clinical reports indicated that most ACL tearing occurs there at the femoral insertion site. CONCLUSIONS: The results have implications not only for understanding the stresses and strains within the ACL under different flexion angles, but also for providing preliminary data for the biomechanical and medical experts in regard of the injuries which may occur to the ACL at relatively higher flexion angles.

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Glinka, G., W. Ott, and H. Nowack. "Elastoplastic Plane Strain Analysis of Stresses and Strains at the Notch Root." Journal of Engineering Materials and Technology 110, no. 3 (July 1, 1988): 195–204. http://dx.doi.org/10.1115/1.3226037.

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For the evaluation of the local elastoplastic strains and stresses at the notch root suitable approximation formulas of sufficient accuracy are often used. In the present study the “equivalent strain energy density” concept for elastic-plastic notch strain-stress analysis has been developed. It was found that the evaluation of the strain energy density in the notch tip plastic zones does not require any input data other than the material stress-strain relation and the elastic stress concentration factor. The concept was verified on the basis of the results obtained from plane strain elastic-plastic finite element analysis using the material model after Mro´z. Comparison of the two sets of results revealed satisfactory accuracy of the equivalent strain energy concept. It was also shown that all stress and strain components in the notch tip can be calculated by complementing the method with Hencky’s equations. Neuber-based calculations were also included in the study. It was found that the energy concept was superior to Neuber’s rule, especially in the presence of high inelastic strains in the notch tip.

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Dissertations / Theses on the topic "Strains and stresses – Analysis"

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Kennedy, Kevin Francis. "A method for metal deformation and stress analysis in rolling." Connect to resource, 1986. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1261418472.

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Seki, Wataru. "Analysis of strain localization in hyperelastic materials, using assumed stress hybrid elements." Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/19088.

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Caceres, Arsenio. "Local damage analysis of fiber reinforced polymer matrix composites." Morgantown, W. Va. : [West Virginia University Libraries], 1998. http://etd.wvu.edu/templates/showETD.cfm?recnum=328.

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Thesis (Ph. D.)--West Virginia University, 1998.
Title from document title page. Document formatted into pages; contains x, 107 p. : ill. (some col.) Includes abstract. Includes bibliographical references (p. 104-107).

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Nagaraja, Srinidhi. "Microstructural Stresses and Strains Associated with Trabecular Bone Microdamage." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/14093.

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Bone is a composite material consisting of hydroxyapatite crystals deposited in an oriented manner on a collagen backbone. The arrangement of the mineral and organic phases provides bone tissue with the appropriate strength, stiffness, and fracture resistance properties required to protect vital internal organs and maintain the shape of the body. A remarkable feature of bone is the ability to alter its properties and geometry in response to changes in the mechanical environment. However, in cases of metabolic bone diseases or aging, bone can no longer successfully adapt to its environment, increasing its fragility. To elucidate the mechanisms of bone microdamage, this research project developed a specimen-specific approach that integrated 3D imaging, histological damage labeling, image registration, and image-based finite element analysis to correlate microdamage events with microstructural stresses and strains under compressive loading conditions. By applying this novel method to different ages of bovine and human bone, we have shown that the local mechanical environment at microdamage initiation is altered with age. We have also shown that formation of microdamage is time-dependent and may have implications in age-related microdamage progression with cyclic and/or sustained static loading. The work presented in this dissertation is significant because it improved our understanding of trabecular bone microdamage initiation and unlocked exciting future research directions that may contribute to the development of therapies for fragility diseases such as osteoporosis.

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Byun, Chansup. "Free vibration and nonlinear transient analysis of imperfect laminated structures." Diss., This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-07282008-135342/.

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JEFFREY, ROBERT GRAHAM JR. "ROCKBOLT ANALYSIS FOR REINFORCEMENT AND DESIGN IN LAYERED ROCK (COMPOSITE)." Diss., The University of Arizona, 1985. http://hdl.handle.net/10150/187982.

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The displacements and stresses in layered rock above underground openings can be calculated using a beam model for the rock layers. The traditional approach assumes that interfaces between layers are frictionless and layers can slip past one another freely as they deflect. In contrast, the design of structural laminated beams has traditionally been based on the assumption that the interfaces between layers were welded, with no slip occurring there. In this work, the theory of composite laminated beams, which allows for partial slip on layer interfaces, is applied to the problem of predicting displacements and stresses in layered roof rock. The effects of rockbolt reinforcement are modeled by discrete shear and normal stiffnesses incorporated at locations in the model where the rockbolts cross layer interfaces. Published solutions and results for laminated composite beams are reviewed. Composite laminated beam theory provided a means of accounting for rockbolt reinforcement effects and provided a conceptual framework that was used to develop two FORTRAN programs; one, based on the force method of analysis, that automatically finds shear and tensile interface failures in the system, and the other a finite element program that employs beam elements, elastic interface elements, and rockbolt elements to model a rockbolted layered rock system. Published data together with results from these programs suggest that shear reinforcement may be more effective when placed near the ends of roof layers. The normal interaction between layers tends to be uniformly distributed unless rockbolt forces act on the layers or if partial delamination of layers has occurred. Both shear and normal reinforcement will cause stresses to be redistributed within the system of layers. Analysis of this redistribution of stresses requires that the sequence of interface failure be predicted which, in turn, requires that the properties of the individual layers, of the interfaces between layers, and of the rockbolts be properly taken into account. Laminated composite beam theory and programs based on this theory provide rational and efficient ways to study and analyze the behavior of layered roof rock.

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Islam, Mohammad Aminul. "Constitutive modeling and plastic analysis with application to beam-to-column connections." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184486.

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Analysis and design of connections, such as beam-to-column connections, pose various complexities such as nonlinear behavior of material and geometric condition, irregularities in geometry and boundary condition. The main purpose of these types of connections is to provide adequate structural strength and a sufficiently stiff structure at working loads, and to possess sufficient ductility and strength at overloads such as may occur during a major earthquake. At present the design profession does not have established guidelines for estimating the ultimate moment and shear capacity of these connections. The assumption of linear elastic material behavior of the connections is no longer valid when the elements are stressed beyond the yield stress of the material. For such problems encountered in the design of typical structures, either the closed-form analytical solutions are extremely complex or cannot be obtained at all. Thus, numerical techniques such as finite difference, finite element and boundary integral methods are used. In this study, a finite element program is developed for plastic analysis of connections such as beam-to-column connection using a constitutive law of the material, a three parameter stress-strain relationship, which gives stress explicitly in terms of strain. One hundred and fifteen cases of beam-to-column connections subjected to moment are analysed with the finite element program developed in this study, and the results are compared with the existing approximate solution by yield line theory to propose a simple formula to correlate actual ultimate capacity to the approximate solution.

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Tong, Wenxia 1958. "Finite element analysis of continuous prestressed composite girders." Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/277224.

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Prestressing a steel girder reduces the required structural steel weight, limits tension stresses in the section, increases the ultimate strength, and increases the fatigue resistance. The technique of prestressing with tendons can be used for strengthening of existing bridges as well as for construction of new bridges. This thesis presents an analytical study of the behavior of simply-supported and continuous prestressed composite girders and describes the benefits of prestressing steel in composite construction. Analytical models are developed and used as a basis for a computer program that calculates the stresses and displacements in the cables and the girder at discrete number of nodes along the length of the girder. The effects of design variables such as prestress force, tendon profile, eccentricity and tendon length are studied. The results indicate that prestressing is an effective means of increasing the load carrying capacity of simple-span as well as continuous composite girders.

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Le, Gall Carole A. "Thermomechanical stress analysis of flip chip packages." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/16002.

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楊貴永 and Kwai-wing Yeung. "Elastic-plastic analysis of rolling elliptical contacts and the effects of axial superimposed stresses on rolling contact fatiguefailure." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1987. http://hub.hku.hk/bib/B31231032.

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Books on the topic "Strains and stresses – Analysis"

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1925-, Riley William F., ed. Experimental stress analysis. 3rd ed. New York: McGraw-Hill, 1991.

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1925-, Riley William F., ed. Experimental stress analysis. 3rd ed. New York: McGraw-Hill, 1991.

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Elements of stress analysis. New York, NY: Cambridge University Press, 2008.

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Pindera, Jerzy-Tadeusz. Isodyne stress analysis. Dordrecht: Kluwer Academic Publishers, 1989.

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Applied stress analysis. Chichester, West Sussex, England: E. Horwood, 1987.

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Hussein, Raafat M. M. Composite panels/plates: Analysis and design. Lancaster, Pa: Technomic Pub., 1986.

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Tada, Hiroshi. The stress analysis of cracks handbook. 2nd ed. St. Louis: Paris Productions Inc. (and Del Research Corporation), 1985.

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Practical stress analysis in engineering design. 2nd ed. New York: M. Dekker, 1990.

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1930-, Paris P. C., and Irwin George Rankin 1907-, eds. The stress analysis of cracks handbook. 3rd ed. New York: ASME Press, 2000.

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Huston, Ronald L. Practical stress analysis in engineering design. 3rd ed. Boca Raton: CRC/Taylor & Francis, 2009.

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Book chapters on the topic "Strains and stresses – Analysis"

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Fuchs, Maurice Bernard. "Applied Strains and Initial Stresses." In Structures and Their Analysis, 235–58. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-31081-7_13.

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Epstein, J. S. "Deformations and Strains Surrounding Weldments Using Moire Interferometry." In Applied Stress Analysis, 649–65. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0779-9_62.

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Khamdaeng, Tipapon, Phrut Sakulchangsatjatai, Niti Kammuang-Lue, Asawinee Danpinid, and Pradit Terdtoon. "Stresses and Strains Analysis in the Left Ventricular Wall with Finite Deformations." In Analysis and Design of Biological Materials and Structures, 33–42. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-22131-6_3.

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Flower, E. C., S. R. Macewen, T. M. Holden, and R. R. Hosbons. "A Comparison of Finite Element Analysis With Neutron and X-Ray Measurements of Residual Strains in Stainless Steel." In International Conference on Residual Stresses, 209–15. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1143-7_34.

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Elliott, Kim. "The Measurement of Plastic-Elastic Strains at Weld Toes Using Moiré Interferometry." In Applied Stress Analysis, 676–88. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0779-9_64.

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Thomas, Olivier, Odile Robach, Stéphanie Escoubas, Jean-Sébastien Micha, Nicolas Vaxelaire, and Olivier Perroud. "X-Ray Diffraction Analysis of Elastic Strains at the Nanoscale." In Mechanical Stress on the Nanoscale, 233–58. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527639540.ch11.

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Lanzo, Giuseppe, and Alessandro Pagliaroli. "Stiffness of Natural and Reconstituted Augusta Clay at Small to Medium Strains." In Soil Stress-Strain Behavior: Measurement, Modeling and Analysis, 323–31. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6146-2_16.

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Glinka, Gregory. "Analysis of Elasto-Plastic Strains and Stresses Near Notches Subjected to Monotonic and Cyclic Multiaxial Loading Paths." In Fatigue of Materials and Structures, 131–78. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118616789.ch2.

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Silvestri, Francesco, Claudia Vitone, Anna d’Onofrio, Federica Cotecchia, Rodolfo Puglia, and Filippo de Magistris. "The Influence of Meso-Structure on the Mechanical Behaviour of a Marly Clay from Low to High Strains." In Soil Stress-Strain Behavior: Measurement, Modeling and Analysis, 333–50. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6146-2_17.

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Kinne, Marko, Ronald Schneider, and Sebastian Thöns. "Reconstructing Stress Resultants in Wind Turbine Towers Based on Strain Measurements." In Lecture Notes in Mechanical Engineering, 224–35. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-77256-7_18.

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AbstractSupport structures of offshore wind turbines are subject to cyclic stresses generated by different time-variant random loadings such as wind, waves, and currents in combination with the excitation by the rotor. In the design phase, the cyclic demand on wind turbine support structure is calculated and forecasted with semi or fully probabilistic engineering models. In some cases, additional cyclic stresses may be induced by construction deviations, unbalanced rotor masses and structural dynamic phenomena such as, for example, the Sommerfeld effect. Both, the significant uncertainties in the design and a validation of absence of unforeseen adverse dynamic phenomena necessitate the employment of measurement systems on the support structures. The quality of the measurements of the cyclic demand on the support structures depends on (a) the precision of the measurement system consisting of sensors, amplifier and data normalization and (b) algorithms for analyzing and converting data to structural health information. This paper presents the probabilistic modelling and analysis of uncertainties in strain measurements performed for the purposes of reconstructing stress resultants in wind turbine towers. It is shown how the uncertainties in the strain measurements affect the uncertainty in the individual components of the reconstructed forces and moments. The analysis identifies the components of the vector of stress resultants that can be reconstructed with sufficient precision.

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Conference papers on the topic "Strains and stresses – Analysis"

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Nun˜ez, J. E., and G. Glinka. "Approximate Analysis of Creep Strains and Stresses at Notches." In ASME 2003 Pressure Vessels and Piping Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/pvp2003-1888.

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A method for the estimation of creep induced strains and stresses at notches has been developed. The purpose of the method is to generate a solution for the time-dependent strain and stress at the notch root based on the linear-elastic stress state, the constitutive law, and the material creep model. The proposed solution is an extension of Neuber’s rule used for the case of time-independent plasticity. The method was derived for both localized and non-localized creep in a notched body. Predictions were compared with finite element data and good agreement was obtained for various geometrical and material configurations in plane stress conditions.

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Kazeminia, Mehdi, and Abdel-Hakim Bouzid. "Analysis of Stresses and Strains in Packed Stuffing-Boxes." In ASME 2014 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/pvp2014-28570.

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Packed stuffing-boxes are mechanical sealing systems that are extensively used in pressurized valves and pumps. Yet there is no standard design procedure that could be used to verify their mechanical integrity and leak tightness. It is only recently that standard test procedures to qualify the packing material have been suggested for adoption in both North America and Europe. While the packing contact stress with the side walls is predictable using existing models there is no analytical methodology to verify the stresses and strains in the stuffing-box housing. This paper presents an analytical model that analyzes the stresses and strains of all the stuffing box components including the packing rings. The developed model will be validated both numerically using FEM and experimentally on an instrumented packed stuffing box rig that is specially designed to test the mechanical and leakage performance of different packing materials.

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Askari, Davood, Hiroshi Asanuma, and Mehrdad N. Ghasemi-Nejhad. "A Comparative Finite Element Analysis of Residual Stresses in Active Fiber Composites With Embedded Metal-Core Piezoelectric Fibers and Macro Fiber Composites." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79049.

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Residual stresses are basically developed due to intrinsic and extrinsic strains that form during the processing of composite materials. The extrinsic strains can be determined using Coefficient of Thermal Expansion (CTE), material properties, geometry of the structure, and processing conditions. Finite Element Method (FEM) as an efficient alternative technique for stress and strain analysis of the micromechanical systems and structures, has been employed to numerically investigate the residual stresses developed in Metal-Core Piezoelectric Fibers (MPF) and Active Fiber Composites (AFC) (or Macro Fiber Composites (MFC)), during the processing. Here in this work, ANSYS Finite Element Analysis (FEA) software is used to develop three different 3-dimensional models for MPF and MFC structures and then each model is solved for strain and stress results. Next, the stress and strain components of these models are studied throughout the structures to identify the magnitude and type of the stresses and strains within the constituent materials and then compared.

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Jawale, H. P., and Rahul Singh. "Analysis of Welded Joint Under Residual Stresses." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-39484.

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Welded joint is most commonly used for building structures and machine components. Welding process involves heating followed by uneven cooling causing residual stress field. In conjunction with stresses due to external loads, in-service behaviour is affected due to residual stress in welded components. It induces defects, also alters crack initiation life, fatigue behaviour, breaking strength, corrosion resistance and increases the susceptibility of structure to failure by fracture. The residual stress is function of cooling rate and the size of weld. The role of residual stress associated with welding is therefore very important while designing mechanical parts. Conventional methods like heat treatment and shot-peening techniques becomes difficult to be applied for reduction of residual stress in general purpose applications. The work presented in this paper describes the measurement of residual stress using stress relieving method, based on hole-drilling technique. Subsequently, residual stresses are relived and measured using strain rosette near the weld zone. These strains value is converted in to stress value. Residual stress is quantified with respect to yield strength, making it possible to be considered for safe designing of weld components.

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5

Nunez, Enrique, and Gregorz Glinka. "Analysis of Creep Induced Strains and Stresses in Notches Subjected to Cyclic Load." In ASME 2005 Pressure Vessels and Piping Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pvp2005-71642.

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Abstract:

A method for the estimation of time-dependent strains and stresses in notches subjected to cyclic load is discussed in the paper. The proposed solution is an extension of the methodology proposed previously for notches under steady external load. A new algorithm is proposed to predict creep response near notches in plane stress components subjected to cyclic loads. Predictions were compared against finite element data and good agreement was obtained for various geometrical and material configurations.

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6

Kulawik, Adam, Joanna Wróbel, and Jerzy Winczek. "Computation of phase transformations, strains and stresses fields during multipass superficial hardening process with tempering." In PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON NUMERICAL ANALYSIS AND APPLIED MATHEMATICS 2014 (ICNAAM-2014). AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4913144.

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7

Moftakhar, Abbas A., and Grzegorz Glinka. "Creep Analysis of High Temperature Components Under Multi-Axial Loading." In ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/98-gt-263.

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Abstract:

A simplified solution method that enables the estimation of stresses and strains in high temperature components under creep conditions is presented. The solution is derived based on strain energy density considerations and is applicable to both uniaxial and multiaxial stress states. In particular, this simplified method is developed for an efficient estimation of the cyclic stress-strain history at critical locations which needed for fatigue analysis of hot sections under creep conditions where conventional finite element creep analysis becomes extremely time consuming. The input data necessary to perform this simplified solution are the stresses and strains obtained from a linear elastic analyses. If the finite element method (FEM) is used for the linear elastic analysis of components, then the simplified solution method can be programmed as a post processor file. The file uses the linear elastic FEM results and generates an approximate time-dependent analysis. Presented results illustrates the accuracy of the method by comparing with finite element creep analysis results for several hot sections under creep conditions. Also, it is shown that the computational time needed to perform this solution is far less than the conventional finite element creep analysis.

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8

Itoh, Takamoto, and Masao Sakane. "Analysis of Proportional and Nonproportional Loading for Low Cycle Fatigue Design." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2273.

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Abstract:

This paper proposes a simple method for defining uniaxial and multiaxial strain and stress states by using principal strains and stresses. It also proposes a simple method for determining the principal and shear strain/stress ranges in proportional and nonproportional loading, introducing an angle rotation of the maximum principal strain and stress. The comparison of the proposed methods and that used in the pressure vessel code in Japan was discussed. The suitability of strain and stress parameters for predicting proportional and nonproportional low fatigue lives was also discussed.

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9

Thiel, Richard. "Analysis of Stresses and Strains in Geomembrane Gas Bubbles That Occur in Surface Impoundments." In Geo-Chicago 2016. Reston, VA: American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784480182.022.

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10

Cretu, Spiridon. "Improvement of Rolling Contact Fatigue Life by a Preliminary Loading in Elastic-Plastic Domain." In ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59137.

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Abstract:

An analysis model has been developed to model the nonlinear strain rate dependent deformation of rolling bearing steel stressed in the elastic-plastic domain. The model is developed in the frame of the incremental theory of plasticity by using the von Mises yield criterion and Prandtl-Reuss equations. By considering the isotropic and non-linear kinematic hardening laws of Lemaitre-Caboche, the model accounts for the cyclic hardening phenomena. To attain the final load of each loading cycle, the two bodies are brought into contact incrementally. For each new load increment new increments for the components of stress and strain tensors, but also increments of residual stresses, are computed for each point of the 3D mesh. Both, the new contact geometry and residual stresses distributions, are further considered as initial values for the next loading cycle, the incremental technique being reiterated. The cyclic evaluation process of both, plastic strains and residual stresses is performed until the material shakedowns. The experimental part of the paper regards to the rolling contact fatigue tests carried out on two groups of line contact test specimens and on two groups of deep groove ball bearings. In both cases, the experimental data reveal more than two times greater fatigue life for the group with induced residual stresses versus the life of the reference group. The von Mises equivalent stress is considered in Ioannides-Harris rolling contact fatigue model to obtain theoretical lives. The theoretical analysis revealed greater fatigue lives for the test specimens and for the ball bearings groups with induced residual stresses than the fatigue lives of the corresponding reference groups.

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Reports on the topic "Strains and stresses – Analysis"

1

Genchev, Yancho, Nelly Staneva, and Desislava Hristodorova. Approach for Analysis of Strains and Stresses in an Upholstered Furniture Frame Using Finite Elements Based System. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, October 2018. http://dx.doi.org/10.7546/crabs.2018.10.12.

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2

Burdick, L. J., and J. S. Barker. Strains and Stresses Near Explosions and Earthquakes. Fort Belvoir, VA: Defense Technical Information Center, October 1986. http://dx.doi.org/10.21236/ada181198.

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3

Djondjorov, Peter, Kostadin G. Kostadinov, and Georgi I. Stoilov. Modeling of Stresses and Strains in Cell Membranes Subjected to Micro-Injection. GIQ, 2012. http://dx.doi.org/10.7546/giq-12-2011-178-185.

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4

Cook, W. A. Generalized finite strains, generalized stresses, and a hybrid variational principle for finite-element computer programs using curvilinear coordinates. Office of Scientific and Technical Information (OSTI), April 1989. http://dx.doi.org/10.2172/6288515.

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5

Duerr, Joachim. Finite element analysis of thermal stresses in semiconductor devices. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.6099.

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Guerrero, H., and M. Restivo. TESTING AND ANALYSIS OF CAP CONCRETE STRESS AND STRAIN DUE TO SHRINKAGE, CREEP, AND EXPANSION FINAL REPORT. Office of Scientific and Technical Information (OSTI), August 2011. http://dx.doi.org/10.2172/1023617.

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Todd, R. I., C. Borsa, B. Derby, and M. A. M. Bourke. Analysis of neutron diffraction peak broadening caused by internal stresses in composite materials. Office of Scientific and Technical Information (OSTI), July 1994. http://dx.doi.org/10.2172/10162916.

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Blank, Robert D. Genetics of Bone Mineralization and Morphology in Inbred Mice: Analysis of the HcB/Dem Recombinant Congenic Strains. Fort Belvoir, VA: Defense Technical Information Center, April 2001. http://dx.doi.org/10.21236/ada400522.

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Menefee, Maia Catherine, and Michael W. Salmon. Allowable Stresses For Use in Dynamic Analysis of PF-4 Fire Suppression System Piping. Office of Scientific and Technical Information (OSTI), May 2017. http://dx.doi.org/10.2172/1360690.

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Wu, Liyou, T. Y. Yi, Joy Van Nostrand, and Jizhong Zhou. Phylogenetic Analysis of Shewanella Strains by DNA Relatedness Derived from Whole Genome Microarray DNA-DNA Hybridization and Comparison with Other Methods. Office of Scientific and Technical Information (OSTI), May 2010. http://dx.doi.org/10.2172/986917.

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