A stabilized conforming (SC) nodal integration method is developed for elastoplastic contact analysis of metal forming processes. In this approach, strain smoothing stabilization is introduced to eliminate spatial instability in collocation meshfree methods. The gradient matrix associated with strain smoothing satisfies the integration constraint (IC) of linear exactness in the Galerkin approximation. Strain smoothing formulation and numerical procedures for history-dependent problems are introduced. Applications to metal forming analysis are presented, with the results demonstrating a significant improvement in computational efficiency without loss of accuracy.
Efficient Meshfree Formulation for Metal Forming Simulations
Contibuted by the Materials Division for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received by the Materials Division July 24, 2000. Guests Editors: Jian Cao and Z. Cedric Xia.
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Yoon, S., Wu, C., Wang, H., and Chen, J. (July 24, 2000). "Efficient Meshfree Formulation for Metal Forming Simulations ." ASME. J. Eng. Mater. Technol. October 2001; 123(4): 462–467. https://doi.org/10.1115/1.1396349
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