Ghiasian, M.; Ahmadi, M. T. Efficient 3D boundary element dynamic analysis of discontinuities. (English) Zbl 1403.74173 Eng. Anal. Bound. Elem. 50, 320-328 (2015). Summary: In the present study, a nonlinear joint element model with a coupled shear-tensile behavior for multi body boundary element frictional contact problems is presented. The analysis is carried out by discrete crack model using the multi-region 3D boundary element method including material damping. To account for the decay of joint strength parameters at intermediate courses of deformation, the simplified discrete crack joint model (SDCJ) has been used. The nonlinear nature of contact problems demands an iterative technique development to determine the actual contact conditions (opening and sliding with bonding and friction) at arbitrary points of the contact boundaries. Through several analyses, it is demonstrated that the proposed method is robust, as it does not require to solve the whole system simultaneously. As a particular case, the influence of foundation inhomogeneity on the seismic response of concrete arch dam has been studied in order to illustrate the accuracy and efficiency of the present approach in a complicated case. MSC: 74S15 Boundary element methods applied to problems in solid mechanics 74R10 Brittle fracture 65M38 Boundary element methods for initial value and initial-boundary value problems involving PDEs 74M15 Contact in solid mechanics Keywords:transient multi-region problems; boundary elements; non-linear analysis; dynamic interaction; discrete crack PDFBibTeX XMLCite \textit{M. Ghiasian} and \textit{M. T. Ahmadi}, Eng. Anal. Bound. Elem. 50, 320--328 (2015; Zbl 1403.74173) Full Text: DOI References: [1] Zienkiewicz, OC; Kelly, D. W.; Bettess, P., The coupling of the finite element method and boundary solution procedures, Int J Numer Methods Eng, 11, 355-375, (1977) · Zbl 0347.65048 [2] Brebbia, C. 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