Plane - Strain Stretch Forming Using Selective Membrane/Shell Formulation 912604

A selective membrane/shell(M/S) scheme is proposed which combines the layered degenerated shell elements in the part where the bending effect can not be negligible with the membrane elements in the part where the bending effects may be negligible. In the proposed scheme membrane elements and layered degenerated shell elements are employed selectively according to the nature of the deformation.
The selective M/S scheme is introduced both to the rigid-plastic finite element analysis and to the elastic-plastic finite element analysis for the plane-strain problem.
Experiment was carried out in order to verify the validity of the selective M/S scheme. Computational results show that with the proposed selective M/S scheme the bending effects can be effectively considered and the computational time can be reduced significantly.


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