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Structural Engineering and Mechanics Volume 6, Number 2, March 1998 , pages 217-227 DOI: https://doi.org/10.12989/sem.1998.6.2.217 |
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Elasto-plastic analysis using shell element considering geometric and material nonlinearities |
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Prasad NS, Sridhar S
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| Abstract | ||
| An elasto-plastic finite element procedure using degenerated shell element with assumed strain field technique considering both material and geometric nonlinearities has been developed. This assumes von-Mises yield criterion, von-Karman strain displacement relations and isotropic hardening. A few numerical examples are presented to demonstrate the correctness and applicability of the method to different kinds of engineering problems. From present study, it is seen that there is a considerable improvement in the displacement valuse when both material and geometric nonlinearities are considered. An example of the spread of plastic zones for isotropic and anisotropic materials has been illustrated. | ||
| Key Words | ||
| elasto-plastic, shell element, FEM, non-linear and Lagrangian in blank space | ||
| Address | ||
| Prasad NS, Indian Inst Technol, Dept Mech Engn, Madras 600036, Tamil Nadu, India Indian Inst Technol, Dept Mech Engn, Madras 600036, Tamil Nadu, India | ||