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METHOD OF COMPUTING 2D NON-STATIONARY ELASTO PLASTIC FLOWS ON NON-REGULAR POLYGONAL LAGRANGIAN GRIDS

S. S. Sokolov
VANT. Ser.: Mat. Mod. Fiz. Proc 2004. Вып.4. С. 62-80.

The Lagrangian method of computing 2D non-stationary elasto-plastic problems on non-regular polygonal Lagrangian grids is surveyed. The method is based on the DMK Lagrangian gas-dynamics method; a non-regular computational grid, consisting of convex polygons with arbitrary numbers of vertexes remaining convex in the course of the computation, is applied. For equation approximation the explicit finite-difference scheme is used. The method was realized in the DMK program complex for solving problems of continuum mechanics with big deformations in intricate-geometry regions.










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