连续胶体材料化学-力学耦合有限元理论及其在ABAQUS中UEL程序实现

发布时间：2018-04-05 05:07

  本文选题：化学-力学耦合　切入点：耦合有限元法　出处：《计算力学学报》2016年05期

【摘要】：基于哈密顿原理,得到水凝胶的化学-力学耦合控制方程的等效积分形式和有限元形式。在整体坐标系下推导出用形函数表示的化学-力学耦合应变矩阵和单元刚度矩阵,并且得到在局部坐标系下的离散化形式。结合ABAQUS软件,编制了用户单元子程序UEL,通过数值算例验证了所开发单元的正确性,为在ABAQUS软件中实现各种耦合问题的有限元UEL编程提供了参考依据。
[Abstract]:Based on the Hamiltonian principle, the equivalent integral form and the finite element form of the chemical-mechanical coupling governing equation of hydrogel are obtained.In the global coordinate system, the chemical-mechanical coupling strain matrix and the element stiffness matrix represented by shape function are derived, and the discretization form in the local coordinate system is obtained.Combined with ABAQUS software, the user unit subprogram UELL is compiled, and the correctness of the developed unit is verified by a numerical example, which provides a reference for the realization of finite element UEL programming for various coupling problems in ABAQUS software.
【作者单位】： 北京工业大学机械工程与应用电子技术学院;河北工程大学土木工程学院;
【基金】：国家自然科学基金(11172012,11472020)资助项目
【分类号】：O341
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本文编号：1713321