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- W3037786180 abstract "Summary The rotation degree of freedom in discontinuous deformation analysis (DDA) may cause false volume expansion when a block undergoes a large rotation. We propose a block displacement function to prevent this defect. Specifically, the degrees of freedom in a block are redefined by incremental displacements at its vertices, and displacement is formulated based on the mean value coordinates. In addition, the finite element method with updated Lagrangian formulation is employed to derive the equilibrium equations, while the contact analysis and implicit time integration for dynamics is maintained from the original DDA. After each time step, the block configuration is updated by adding the new degrees of freedom to the previous coordinates of the block vertices. Results from numerical examples confirm the effectiveness of the proposed approach to prevent false volume expansion, ensure correctness of contact analysis, and provide realistic stress results when simulating large rotations." @default.
- W3037786180 created "2020-07-02" @default.
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- W3037786180 date "2020-08-12" @default.
- W3037786180 modified "2023-09-27" @default.
- W3037786180 title "Novel displacement function for discontinuous deformation analysis based on mean value coordinates" @default.
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- W3037786180 doi "https://doi.org/10.1002/nme.6491" @default.
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