About the causes of cyclical instability at computations of large elasto-plastic strains

Artem S. Semenov; Boris E. Melnikov; Mikhail Yu. Gorokhov

doi:10.1117/12.619677

29 April 2005 About the causes of cyclical instability at computations of large elasto-plastic strains

Artem S. Semenov, Boris E. Melnikov, Mikhail Yu. Gorokhov

Proceedings Volume 5831, Eighth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering; (2005) https://doi.org/10.1117/12.619677
Event: Eighth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, 2004, St. Petersburg, Russian Federation

Abstract

Response of various elasto-plastic models is compared at large strains under cyclic loading. In contrast to the small strain case, the cyclic instability is observed at large strains for some elasto-plastic material models with a kinematic hardening. The cyclic instability manifests itself as changing of shape, size or location of the hysteresis loop during cycling. Causes of the cyclic instability are analyzed. Conditions ensuring the cyclic stability of elasto-plastic models are proposed.

Citation Download Citation

Artem S. Semenov, Boris E. Melnikov, and Mikhail Yu. Gorokhov "About the causes of cyclical instability at computations of large elasto-plastic strains", Proc. SPIE 5831, Eighth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, (29 April 2005); https://doi.org/10.1117/12.619677

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