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A finite element analysis of elasto-plastic contact problems in metal forming

✍ Scribed by F.H. Lin; A.A. Tseng

Publisher
Elsevier Science
Year
1998
Weight
370 KB
Volume
19
Category
Article
ISSN
0261-3069

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✦ Synopsis

A contact finite element has been developed to solve elasto-plastic contact problems frequently encountered in metal forming processes. The element developed is based on the methodology originally used for solving elastic contact problems. It employs an interface spring algorithm that yields a symmetric type of elemental stiffness matrix and that can be conveniently handled by most exiting finite element solvers. To verify its capability and reliability, the element developed is used to solve two typical metal indentation problems. It has been shown that the present results agree very well with previously published data obtained using a different approach.

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Convergence of two inexact Newton-like methods suitable for application in incremental finite element analysis of problems of elasto-plasticity is investigated by a new technique based on a certain approximation condition. It is shown that the convergence can be controlled by the size of load increm