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Abstract:
Contact
treatment is one of key factors influence the FEM simulation accuracy
and efficiency. A general method is proposed to describe the tool
surface by line segments and are segments with their analytic form for
2D metal forming problem. A general and efficient contact algorithm is
developed, which is characterized by modification of nodes’ coordinate
and their boundary constraint condition when convergence is obtained. It
is validity is tested by three simulation examples.
Key words:
Finite
element method Contact treatment Boundary constraint
CLC No: TG376
Received
20001019, received in revised form 20001128
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