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- W2079709097 abstract "A finite element solution method for two-dimensional boundary value problems involving nonlinear viscoelasticity and contact friction is presented. The simulation of ceramic composites at elevated temperatures is the motivation of coupling viscoelasticity and contact friction. Three major topics are discussed; (i) the time-integration scheme developed for coupling the interface contact friction with nonlinear viscoelasticity in the surrounding continuum, (ii) the spatial discretization of a generalized two-dimensional deformation field using finite elements, and (iii) two methodologies for treating the nonlinearities introduced by the contact friction. The implementation of the contact friction utilizes a penalty method coupled with an incremental plasticity formulation. This formulation results in a highly nonlinear problem, and many solution techniques have difficulty with convergence due to a directional sensitivity arising from the unknown slip direction in the case of three-dimensional contact friction (or the unknown slip direction for hardening or dilatant two-dimensional friction problems). This directional sensitivity is illustrated along with an algorithm which alleviates this difficulty. Also, an algorithm based upon proportional stressing is developed to eliminate problems created by a singular yield surface for idealized Coulomb friction." @default.
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- W2079709097 date "1992-03-01" @default.
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- W2079709097 title "A contact friction algorithm including nonlinear viscoelasticity and a singular yield surface provision" @default.
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- W2079709097 doi "https://doi.org/10.1016/0045-7949(92)90103-7" @default.
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