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Abstract: A new surface description model for elastic-plastic asperity contact problems is presented to remove the nodes, which have little influence for the description of the surface profile. Element-free Galerkin-finite element (EFG-FE) coupling method is utilized to fit the requirement of irregular surface node arrangement when some of the surface nodes are removed because of its flexibility in domain discretization and versatility in node arrangements. The results express that the computing time can be dramatically reduced to about 50% of original computing time in the example studied when the relative errors are about 5%. Some factors, which may influence the elastic-plastic contact of adaptive rough surfaces, are investigated and discussed.
Key words: Adaptive Elastic-plastic contact Rough surface
Element-free Galerking-finite element (EFG-FE)
Coupling method
CLC No: TH123
国家自然科学基金(50475146), 高等学校博士学科点专项基金(20030699035), 陕西省自然科学基金(2004E225, 2005E226)和西北工业大学博士论文创新基金(CX200312)资助项目. Received 20060802, received in revised form 20070228
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