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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/32165

Title: Semi-Lagrangian reproducing kernel particle method for fragment-impact problems
Authors: P.C. Guan;S.W. Chi;J.S. Chen;T;R;Slawson;M.J. Roth
Contributors: NTOU:Department of Systems Engineering and Naval Architecture
Date: 2011-12
Issue Date: 2012-06-15T07:34:27Z
Publisher: International Journal of Impact Engineering
Abstract: abstract:Fragment-impact problems exhibit excessive material distortion and complex contact conditions that pose considerable challenges in mesh based numerical methods such as the finite element method (FEM). A semi-Lagrangian reproducing kernel particle method (RKPM) is proposed for fragment-impact modeling to alleviate mesh distortion difficulties associated with the Lagrangian FEM and to minimize the convective transport effect in the Eulerian or Arbitrary Lagrangian Eulerian FEM. A stabilized non-conforming nodal integration with boundary correction for the semi-Lagrangian RKPM is also proposed. Under the framework of semi-Lagrangian RKPM, a kernel contact algorithm is introduced to address multi-body contact. Stability analysis shows that temporal stability of the kernel contact algorithm is related to the velocity gradient between two contacting bodies. The performance of the proposed methods is examined by numerical simulation of penetration processes.
Relation: 38(12), pp.1033-1047
URI: http://ntour.ntou.edu.tw/handle/987654321/32165
Appears in Collections:[系統工程暨造船學系] 期刊論文

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