arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2101.08712math.NAcs.NA
收藏

Cosserat弹性力学计算的变分离散元法

A variational discrete element method for the computation of Cosserat elasticity

Frédéric Marazzato

摘要:

在[28]中发展的用于动态弹塑性计算的变分离散元法适用于计算弹性Cosserat材料的变形。除了单元位移自由度(dofs),单元旋转dofs被添加。一个重建的设计,以获得P1非协调多项式在每个细胞,从而在每个细胞恒定的应变和应力。该方法只需要Cosserat材料的通常宏观参数,而不需要微观参数。数值算例表明,该方法对二维和三维的静态和动态计算都具有较好的鲁棒性。

英文摘要:

The variational discrete element method developed in [28] for dynamic elasto-plastic computations is adapted to compute the deformation of elastic Cosserat materials. In addition to cellwise displacement degrees of freedom (dofs), cellwise rotational dofs are added. A reconstruction is devised to obtain P 1 non-conforming polynomials in each cell and thus constant strains and stresses in each cell. The method requires only the usual macroscopic parameters of a Cosserat material and no microscopic parameter. Numerical examples show the robustness of the method for both static and dynamic computations in two and three dimensions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑