Numerical Method for Quasi-static and Dynamic Elastoplastic Problems by Symplectic Brezis-Ekeland-Nayroles Non-incremental Principle
Numerical Method for Quasi-static and Dynamic Elastoplastic Problems by Symplectic Brezis-Ekeland-Nayroles Non-incremental Principle
复制标题
基于辛 Brezis-Ekeland-Nayroles 非增量原理求解准静态和动态弹塑性问题的数值方法
DOI:
10.1007/978-3-030-48834-5_10
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
G de Saxcé
中科院分区:
文献类型:
--
作者:
A Oueslati;AD Nguyen;M Stoffel;B Markert;G de Saxcé
Most computer-aided engineering software provide a classical incremental computation procedure for nonlinear problems. Although little used in the literature, the Brezis-Ekeland-Nayroles (BEN) principle, an alternative step-by-step algorithm, based on the time integration of the sum of the dissipation potential and its Fenchel polar can have a global view of whole evolution. In short, the BEN principle converts a mechanical problem to a constrained optimization problem. Recently, Buliga and de Saxcé have proposed a symplectic version of the BEN principle which generalizes the Hamiltonian inclusion formalism for the dissipative systems. In the present work, this formalism is specialized to the standard plasticity in small, finite strains, in statics and dynamics. We apply it numerically to solve the classical problem of a tube problem in plane strain subjected to an internal pressure in statics and dynamics. An excellent agreement is obtained between the numerical results obtained by the BEN approach and the reference numerical solution.
DOI:
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发表时间:
1975
期刊:
影响因子:
--
作者:
B. Halphen;Q. Nguyen
通讯作者:
Q. Nguyen
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
A. Visintin
通讯作者:
A. Visintin
影响因子:
2.6
作者:
Marius Buliga;G. de Saxcé
通讯作者:
G. de Saxcé