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http://dx.doi.org/10.5916/jkosme.2010.34.7.943

Efficient Meshfree Analysis Using Stabilized Conforming Nodal Integration for Metal Forming Simulation  

Han, Kyu-Taek (Department of Mechanical Engineering, Pukyong National University)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.34, no.7, 2010 , pp. 943-950 More about this Journal
Abstract
An efficient meshfree method based on a stabilized conforming 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 Galerkin meshfree methods when the weak form is integrated by a nodal integration. The gradient matrix associated with strain smoothing satisfies the integration constraint for linear exactness in the Galerkin approximation. Strain smoothing formulation and numerical procedures for path-dependent problems are introduced. Applications of metal forming analysis are presented, from which the computational efficiency has been improved significantly without loss of accuracy.
Keywords
Stabilized conforming; Efficient meshfree method; Nodal integration; Metal forming;
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