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- W2008115706 abstract "A new approach is suggested for the generation of adaptive finite-element meshes applied in the step-by-step incremental simulation for compaction of quasi-linear viscoplastic granular materials. A contact detection algorithm is employed for accurately prediction of where and when a contact between particles occurs. On the basis of a mixed triangular and quadrilateral finite-element mesh system, a mesh upgrade scheme is generated to simply remesh the whole system after a contact is detected. By carefully monitoring the geometrical distortion of each quadrilateral element , a suggested concave element modification algorithm can be used to improve accuracy of the finite-element model. In addition, a locking prevention scheme is generated to prevent highly constrained situations during the viscoplastic analysis. Results of numerical experiments demonstrate efficiency of the mesh upgrade procedures used in the step-by-step incremental simulation. In fact, the proposed mesh re-generation schemes can easily be extended to many other cases without major modification." @default.
- W2008115706 created "2016-06-24" @default.
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- W2008115706 date "2008-03-01" @default.
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- W2008115706 title "Automatic adaptive mesh upgrade schemes of the step-by-step incremental simulation for quasi-linear viscoplastic granular materials" @default.
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- W2008115706 doi "https://doi.org/10.1016/j.cma.2007.11.020" @default.
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