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论文类型：期刊论文

发表时间：2018-01-01

发表刊物：LATIN AMERICAN JOURNAL OF SOLIDS AND STRUCTURES

收录刊物：SCIE

卷号：15

期号：2

ISSN号：1679-7825

关键字：Dynamic Contact Problem; Finite Element Method; Mass-Spring Model; Parametric Quadratic Programming; Linear Complementarity

摘要：An improved dynamic contact model for mass-spring and finite element systems is proposed in this paper. The proposed model avoids the numerical troubles of spurious high-frequency oscillations for mass-spring and finite element systems in dynamic contact problems by using the parametric quadratic programming technique. The iterative process for determination of contact states are not required for each time step in the proposed method, as the contact states are transformed into the base exchanges in the solution of a standard quadratic programming problem. The proposed methodology improves stability and has good convergence behavior for dynamic contact problems. Numerical results demonstrate the validity of the proposed method.