engleski

Block-coupled finite volume solver for incompressible linear elasticity

A finite volume solver for predicting the linear elastic behavior of an incompressible elastic solid is proposed in [I. Bijelona, I. Demirdzic and S. Muzaferija. A finite volume method for incompressible linear elasticity. Computer Methods in Applied Mechanics and Engineering, 195(44-47):6378-6390, 2006.], where the incompressibility constraint is enforced by employing the hydrostatic pressure as an additional variable and SIMPLE based segregated solution procedure is used to solve resulting set of coupled algebraic equations. In this paper, the above described solver is extended by implementing a block-coupled solution procedure similar to one used for incompressible fluid flow [T. Uroic and H. Jasak. Block-selective algebraic multigrid for implicitly coupled pressure-velocity system. Computers & Fluids, 67:100-110, 2018.]. Although with such approach the substantial improvement of the computational efficiency is obtained, the major problem of finite volume stress analysis related to strong inter-displacement-component coupling is still present.

foam-extend, blok spregnuti algoritam, nestlačiva linearno elastična deformacija

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