Готові списки джерел за темами / Elasto-plastic systems

Добірка наукової літератури з теми "Elasto-plastic systems"

Автор: Grafiati

Опубліковано: 14 березня 2023

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Статті в журналах з теми "Elasto-plastic systems"

Leung, A. Y. T., and T. C. Fung. "Analytical solutions of elasto-plastic systems." Journal of Sound and Vibration 142, no. 1 (October 1990): 175–82. http://dx.doi.org/10.1016/0022-460x(90)90590-v.

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Pal, Raj Kumar, Amnaya P. Awasthi, and Philippe H. Geubelle. "Wave propagation in elasto-plastic granular systems." Granular Matter 15, no. 6 (October 2, 2013): 747–58. http://dx.doi.org/10.1007/s10035-013-0449-1.

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Au, S. K. "Critical excitation of sdof elasto-plastic systems." Journal of Sound and Vibration 296, no. 4-5 (October 2006): 714–33. http://dx.doi.org/10.1016/j.jsv.2006.01.034.

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Wang, Pao‐Hsii, and Min‐Jong Wang. "Elasto‐plastic large displacement analysis of cable systems." Journal of the Chinese Institute of Engineers 9, no. 5 (July 1986): 451–64. http://dx.doi.org/10.1080/02533839.1986.9676913.

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Au, Siu-Kui. "Sub-critical excitations of SDOF elasto-plastic systems." International Journal of Non-Linear Mechanics 41, no. 9 (November 2006): 1095–108. http://dx.doi.org/10.1016/j.ijnonlinmec.2006.11.005.

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Hayward, V., B. S. R. Armstrong, F. Altpeter, and P. E. Dupont. "Discrete-Time Elasto-Plastic Friction Estimation." IEEE Transactions on Control Systems Technology 17, no. 3 (May 2009): 688–96. http://dx.doi.org/10.1109/tcst.2008.2001710.

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Elgamal, Ahmed-W. "Shear hysteretic elasto-plastic earthquake response of soil systems." Earthquake Engineering & Structural Dynamics 20, no. 4 (1991): 371–87. http://dx.doi.org/10.1002/eqe.4290200406.

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Di Egidio, Angelo, Stefano Pagliaro, and Alessandro Contento. "Elasto-Plastic Short Exoskeleton to Improve the Dynamic and Seismic Performance of Frame Structures." Applied Sciences 12, no. 20 (October 15, 2022): 10398. http://dx.doi.org/10.3390/app122010398.

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Анотація:

The coupling with external mechanical systems such as oscillating masses working as tuned mass dampers, dynamic mass absorbers, elasto-plastic dampers, and rigid walls is an effective method to reduce the displacements and drifts of structures under external loads. An alternative method is provided by the coupling of the structure with an independent, auxiliary elasto-plastic system. This paper investigates the dynamic and seismic behaviour of a structure rigidly coupled with an auxiliary yielding mechanical system under harmonic and seismic ground excitation. A two-degree-of-freedom model is used to describe the dynamic and seismic behaviour of the main structure rigidly coupled to the yielding system, which is described by a one-degree-of-freedom model. The auxiliary system has an elasto-plastic constitutive behaviour that is modelled by a Bouc-Wen model. The equations of motion of the coupled system are obtained by a direct approach. The coupling with the yielding system is considered beneficial if the displacements of the coupled system reduce with respect to those of the stand-alone frame structure. An extensive parametric analysis is performed to point out the role of the mechanical parameters that describe the elasto-plastic constitutive behaviour of the auxiliary system. Results reveal that in large ranges of the parameters’ values, the coupling with the elasto-plastic system improves the performance of the frame structure.

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Terazawa, Yuki, and Toru Takeuchi. "Generalized Response Spectrum Analysis for Structures with Dampers." Earthquake Spectra 34, no. 3 (August 2018): 1459–79. http://dx.doi.org/10.1193/092217eqs188m.

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Анотація:

In this study, a computational seismic design routine is proposed based on a generalized response spectrum analysis for highly indeterminate structures with energy-dissipation members, such as viscous or elasto-plastic dampers. Complex stiffness terms are introduced to account for displacement-dependent damping, and a three-dimensional (3-D) element stiffness matrix with complex axial stiffness is proposed for elasto-plastic dampers. A modified complete quadratic combination method previously developed for real symmetric damped systems is extended to complex asymmetric damped systems, based on a theoretical analysis of eigenvalue equations. The response is evaluated by iteratively conducting complex eigenvalue analysis and modal combination. The accuracy is confirmed through comparison to nonlinear response history analysis of 2-D frame models. Finally, an example application is presented of a 3-D truss tower seismically retrofitted by replacing the braces with viscoelastic and then elasto-plastic dampers. The proposed design routine is used to rapidly identify novel and efficient damper arrangements and sizing distributions, avoiding computationally intensive nonlinear response history analysis.

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Ambrosio, Jorge A. C., and Parviz E. Nikravesh. "Elasto-plastic deformations in multibody dynamics." Nonlinear Dynamics 3, no. 2 (1992): 85–104. http://dx.doi.org/10.1007/bf00118987.

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Дисертації з теми "Elasto-plastic systems"

Scala, Riccardo. "A variational approach to statics and dynamics of elasto-plastic systems." Doctoral thesis, SISSA, 2014. http://hdl.handle.net/20.500.11767/3898.

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We prove some existence results for dynamic evolutions in elasto-plasticity and delamination. We study the limit as the data vary very slowly and prove convergence results to quasistatic evolutions. We model dislocations by mean of currents, we introduce the space of deformations in the presence of dislocations and study the graphs of these maps. We prove existence results for minimum problems. We study the properties of minimizers.

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Blackmore, Avril. "Dynamical systems analogy in upheaval buckling." Thesis, Imperial College London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307455.

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Книги з теми "Elasto-plastic systems"

M, Paulekar Y., and Bhabha Atomic Research Centre, eds. Elasto-plastic damper for passive control of seismic response of piping systems. Mumbai: Bhabha Atomic Research Centre, 2003.

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Частини книг з теми "Elasto-plastic systems"

Stronge, W. J. "Contact Problems for Elasto-Plastic Impact in Multi-Body Systems." In Impacts in Mechanical Systems, 189–234. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-45501-9_4.

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Cleja-Tigoiu, Sanda. "Elasto-Plastic Models with Dislocations Based on Configuration with Torsion." In Continuum Models and Discrete Systems, 215–20. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-1-4020-2316-3_33.

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Myśliński, A. "Phase field topology optimization of elasto-plastic contact problems with friction." In Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems, 464–70. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003348443-76.

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Myśliński, A. "Phase field topology optimization of elasto-plastic contact problems with friction." In Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems, 163–64. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003348450-76.

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Bendsøe, Martin P., Niels Olhoff, and John E. Taylor. "A Unified Approach to the Analysis and Design of Elasto-Plastic Structures with Mechanical Contact." In Optimization of Large Structural Systems, 697–705. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-010-9577-8_34.

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Ozcan, Soydan, Jale Tezcan, Jane Y. Howe, and Peter Filip. "Study on Elasto-Plastic Behavior of Different Carbon Types in Carbon/Carbon Composites." In Mechanical Properties and Processing of Ceramic Binary, Ternary, and Composite Systems, 141–49. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2009. http://dx.doi.org/10.1002/9780470456361.ch14.

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Dawari, B. M., and P. C. Pandey. "Strain-Space Solution for the Elasto-plastic Analysis of Adhesively Bonded Single Lap Joint." In IUTAM Symposium on Multi-Functional Material Structures and Systems, 233–40. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-3771-8_23.

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Sunten, J., A. Schwarz, J. Bluhm, and J. Schröder. "Simulations of elasto-plastic soils within the framework of the theory of porous media." In Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems, 279–84. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003348443-44.

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Sunten, J., A. Schwarz, J. Bluhm, and J. Schröder. "Simulations of elasto-plastic soils within the framework of the Theory of Porous Media." In Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems, 95–96. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003348450-44.

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Rother, Michael J., and Jay T. Higasbi. "An Automated Material Testing System for Evaluating the Effects of Thermal Mechanical Fatigue on Material Properties." In Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials, 320–24. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3459-7_48.

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Тези доповідей конференцій з теми "Elasto-plastic systems"

Aoki, Shigeru, and Takeshi Watanabe. "Approximate Analytic Method of Piping Systems With Elasto-Plastic Damper." In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1424.

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Анотація:

An elasto-plastic damper is one of the vibration absorbers in which energy is absorbed by elasto-plastic deformation of the hysteretic type damper. It is used for the piping system. The piping system is continuous system. Since it is difficult to find the analytical solution of the equation of motion for the system with elasto-plastic damper, the equation of motion is treated by various approximate methods in which the system is usually considered as a single- or a multiple-degree-of-freedom system, but not as a continuous system. In order to analyze the response of a nonlinear continuous system, however, it is necessary to consider the system as a continuous system. In this paper, the nonlinear steady-state response of the piping system with elasto-plastic damper is undertaken by approximate solutions, which are easily obtained by a simple procedure and are more practical than the exact solutions. As a continuous model of the piping system, a beam simply supported or clamped at one end, with elasto-plastic damper at the other end is used. The restoring force is modeled as hysteresis loop characteristics in order to consider the energy loss in the damper. In the analysis, the restoring force is expanded into the Fourier series, and only fundamental terms are considered. The resonance curves and mode shapes of the beam are obtained from the approximate solution. And effect of elasto-plastic damper on the forced response of continuous system is examined.

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Shoaib, Muhammad, Leif Kari, Bengt Enflo, Claes M. Hedberg, and Leif Kari. "Elasto-Plastic Wave Front Propagation In Non-Linear Particle Systems." In NONLINEAR ACOUSTICS - FUNDAMENTALS AND APPLICATIONS: 18th International Symposium on Nonlinear Acoustics - ISNA 18. AIP, 2008. http://dx.doi.org/10.1063/1.2956300.

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Otani, Akihito, Izumi Nakamura, and Hajime Takada. "Simplified Elasto-Plastic Response Analysis Method of Piping." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2264.

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Анотація:

When piping systems are subjected to extreme seismic excitation, they undergo a plastic deformation that produces a large damping effect via energy dissipation. Based on our studies of the damping effect of the elasto-plastic response of piping, we have presented a simplified method for predicting the elasto-plastic response of piping in PVP conferences over the last several years. Yet the elasto-plastic response of piping calculated by this method resulted in conservative predictions compared with the results of piping model excitation tests. In the proposed method, we calculate the vibration energy of piping and the dissipation energy with plastic deformation by FEM analysis and obtain the equivalent damping ratio as a ratio between the two. The equivalent damping ratio and response are interdependent and can be calculated as a pair of converged values. In this paper we report simulation results from 3D piping model excitation tests as well as the results from 2D piping model tests. The simulation method is a modified and improved version of the method reported earlier. The results obtained by the revised method more closely matched the results of the excitation tests.

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Stelescu, Maria Daniela, Daniela Ioana Constantin, Maria Sonmez, Laurentia Alexandrescu, Mihaela Nituica, and Mihai Georgescu. "Development of elasto-plastic eco-nano-materials for the footwear industry." In The 8th International Conference on Advanced Materials and Systems. INCDTP - Leather and Footwear Research Institute (ICPI), Bucharest, Romania, 2020. http://dx.doi.org/10.24264/icams-2020.iv.22.

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The paper refers to the obtaining of new types of eco-nano elasto-plastic materials with high-performance characteristics based on ethylene-propylene-terpolymer rubber (EPDM), high-density polyethylene (HDPE), plasticized starch and organically modified montmorillonite (OMMT). The new materials were obtained by the technique of dynamic vulcanization and melt intercalation in a Plasti-Corder Brabender internal mixer, at 80 rpm and a temperature of 170°C. The influence of using the OMMT type nanofiller and the plasticized starch filler on the characteristics was observed. The new materials have a melt flow index of over 12g/10 min at 180°C for a force of 10 kg, which allows injection processing - an ecological method of processing polymeric materials. The samples show very good physical-mechanical characteristics both in the normal state and after accelerated aging at 168 hours at 170°C (tensile strength over 16 N/ mm2, tear strength over 102 N/mm, hardness 55-59°ShD, elasticity over 30%, etc.). The materials show high values of abrasion resistance (below 30 mm3), and very good results for mass and volume variation after 22 hours at 23°C in: water, acids and concentrated bases. These characteristics are due both to the composition of the new materials and to the obtaining technology. For evaluating the structural modification, analysis of the FT-IR spectral of the samples was carried out. The new materials can be used in different fields such as: in the footwear industry (soles, heels and plates), safety equipment (boots, etc), obtaining gaskets, hoses, technical rubber products for cars etc.

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Arai, Masashi, Nobuyuki Kojima, Takuro Kabaya, Satoru Hirouchi, and Masatsugu Bando. "Investigation on Method of Elasto-Plastic Analysis for Piping System (Benchmark Analysis)." In ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63186.

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Анотація:

This report proposes an elasto-plastic analysis method to be used for practical aseismic designing of nuclear piping systems. JSME (the Japan Society of Mechanical Engineers) initiated a task to establish an elasto-plastic analysis method for nuclear piping systems. During this task, benchmark analysis was conducted in order to examine the elastic-plasticity analytical method, in which our company decided to participate. Our policy for evaluation was that the material characteristics to be used in benchmark analysis were based on the standards for nuclear designs in Japan. As a consequence, we prepared a method to accurately simulate the vibration test on piping systems. The recommended elasto-plastic analysis method is thus specified as follows: 1) The elasto-plastic analysis method comprised of dynamic analysis on piping system modeled using beam elements and static analysis of the deforming elbow which was modeled using shell elements. 2) Bi-linear was applied as the elasto-plastic characteristics. The yield point was the standardized yield point times 1.2, and the second gradient was 1/100 the Young’s modulus. Kinematic hardening law was used as the hardening law. 3) Rain flow method and fatigue curve of an existing research were used to evaluate the fatigue life for the strain range obtained by elasto-plastic analysis.

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Ito, Tomohiro, Katsuhisa Fujita, and Masashi Michiue. "Applicability of Optimal Seismic Design Methodology for Piping Systems Subjected to Seismic Waves With Various Frequency Characteristics." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26436.

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In this study, the optimal seismic design methodology which can consider the structural integrity of both piping systems and elasto-plastic support devices are developed. This methodology employs genetic algorithm and can search the optimal conditions such as supporting locations, capacity and stiffness of supporting devices. A lead extrusion damper is treated here as a typical elasto-plastic damper. Numerical simulations are performed using a simple piping system model for the various kinds of seismic waves with different frequency characteristics. As a result, it is shown that the optimal seismic design methodology proposed here is applicable to the seismic design of piping systems supported by elasto-plastic dampers subjected to the seismic waves with various kinds of frequency characteristics.

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Tsujita, Keishi, Atsuhiko Shintani, Tomohiro Ito, and Chihiro Nakagawa. "Basic Study on Vibrational Behavior of Piping Systems Supported by Elasto-Plastic Damper With Gap Support." In ASME 2014 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/pvp2014-28283.

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In this study, the vibrational behavior of piping systems supported by elasto-plastic dampers with gap supports was considered. First, an analytical model of L-type piping systems subjected to sinusoidal input was derived, including nonlinear characteristics of the elasto-plastic dampers and gap supports. Next, a numerical simulation was performed to verify the effect of the gap support on the piping system. The effect of the input characteristics on the response behavior of the piping system was investigated.

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Parulekar, Y. M., G. R. Reddy, K. K. Vaze, and K. Muthumani. "Passive Control of Seismic Response of Piping Systems." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2960.

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Анотація:

Passive energy dissipating devices like Elasto-plastic dampers (EPDs) can be used for eliminating snubbers and reducing the response of piping systems subjected to seismic loads. Cantilever and 3-dimensional piping systems were tested with and without EPD on shake table. Using a finite element model of the piping systems, linear and nonlinear time history analysis is carried out using Newmark’s time integration technique. Equivalent linearization technique such as Caughey method is used to evaluate the equivalent damping of the piping systems supported on Elasto-Plastic damper. An iterative response spectrum method is used for evaluating response of the piping system using this equivalent damping. The analytical maximum response displacement obtained at the Elasto-Plastic damper support for the two piping systems is compared with experimental values and time history analysis values. It has been concluded that, iterative response spectrum technique using Caughey equivalent damping is simple and results in reasonably acceptable response of the piping systems supported on EPD.

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Shi, Haochen, Huazhe Xu, Zhiao Huang, Yunzhu Li, and Jiajun Wu. "RoboCraft: Learning to See, Simulate, and Shape Elasto-Plastic Objects with Graph Networks." In Robotics: Science and Systems 2022. Robotics: Science and Systems Foundation, 2022. http://dx.doi.org/10.15607/rss.2022.xviii.008.

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Choi, Sung-Hyun, and Kyoung-Su Park. "The integrated elasto-plastic cable modeling for cable driven parallel robots(CDPRs)." In 2017 17th International Conference on Control, Automation and Systems (ICCAS). IEEE, 2017. http://dx.doi.org/10.23919/iccas.2017.8204475.

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