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Mathematical and Computational Applications is published by MDPI from Volume 21 Issue 1 (2016). Articles in this Issue were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence. Articles are hosted by MDPI on as a courtesy and upon agreement with the previous journal publisher.
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Math. Comput. Appl. 2000, 5(1), 23-33;

The Boundary Integral Equation Method for Elastoplastic Stres Analysis of Frictional Contact Problems

A. K. U. Usak Muhendislik Fakultesi Usak, Turkey
The University of Nottingham, The Department of Mechanical Engineering, Nottingham, U. K.
Author to whom correspondence should be addressed.
Published: 1 April 2000
PDF [681 KB, uploaded 31 March 2016]


For two-dimensional elastoplastic stress analysis of frictional contact problems an isoparametric quadratic formulation of the boundary integral equation (BIE) method is presented with emphasis on clarity at the expense of efficiency. The overall system of equation is obtained by using multi-domain approach in which the contact conditions are taken into account to couple the different system of equation for each body in contact, Several types of contact interface conditions are covered including Infinite friction (stick), frictionless and Coulomb friction slip. In order to include plastic deformation in the analysis, the initial strain formulation and von Mises yield criterion are used. In order to evaluate internal stress and strain rates the differentiation of the displacement in elementwise manner is adopted with its compulsory modeling of partial (where plastic deformation is expected) domain. Elastic-perfectly plastic, work-hardening or mixed hardening material behaviour can be assumed. An efficient and robust incremental-iterative process is proposed to find the proper contact conditions. For the numerical implementation, isoparametric three-noded line elements are used to represent the boundary and eight-noded quadrilateral domain cell are used for partially modelling interior domain. The proposed algorithm is applied to the heftz-like indentation problem and the results are, where appropriate, compared with the presented results in the literature to confirm its correctness and robustness.
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Gun, H.; Becker, A.A. The Boundary Integral Equation Method for Elastoplastic Stres Analysis of Frictional Contact Problems. Math. Comput. Appl. 2000, 5, 23-33.

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