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Simulation of Strip Rolling Using Elastoplastic Contact BEM With Friction

LI Yugui , HUANG Qingxue , SHEN Guangxian , XIAO Hong , PANG Siqin , WANG Jianmei

钢铁研究学报(英文版)

With rollers as elastic bodies and workpieces as elastoplastic bodies, the rolling problem can be viewed as a friction elasticplastic contact problem. With fewer assumptions in the simulation of striprolling process, a boundary element method (BEM) for twodimensional elastoplastic finite strain and finite deformation analysis of contact problems with friction was presented. All the equations for contact problems, which include multinonlinearities, were obtained. Incremental and iterative procedures were used to find contact pressure and friction stress. Moreover, initial strain rate algorithm and workhardening material behavior can be assumed in the plastic analysis. Several examples were presented, and the results of contact pressure and friction stress were in excellent agreement with those of analysis.

关键词: boundary element method;contact problem;elastoplastic finite deformation;rolling