摘要
针对橡胶数值模拟中普遍存在的网格大变形问题,提出运用Abaqus软件中的网格间求解变换方法,根据网格畸变判据判断网格重划时机,将网格重划前的求解结果映射到新网格上进行进一步求解,使求解过程顺利完成。以井下封隔器中的关键部件胶筒为研究对象,成功进行了两次网格重划。结果表明:网格重划可以解决超弹性材料因网格畸变引起的大变形非线性分析不收敛的问题,在网格畸变较小时实施网格重划可有效提高旧-新网格间数据传递的精度。这为胶筒的性能研究提供了重要的方法,对其他超弹性材料的分析也具有一定的参考意义。
For the large deformation and distortion of the mesh on the numerical simulation of rubber,using the solving and transformation between grids of the adaptive technique of Abaqus software,the rubber model was remeshed several times. In this paper,the key parts of the packer were used as the research object and the final rubber deformation results were obtained by two remeshing before solving the mapping to the new mesh for further solving. The results of numerical simulation show that remeshing can reduce the occurrence of distortion and solve the problem of nonlinear analysis of large deformation caused by mesh distortion.Remeshing can improve the accuracy of data transmission between the old and new grid when the old mesh has a smaller distortion. It provides a significant research method for the sealing performance of the rubber,which also has some reference value for other hyperelastic materials.
作者
吕凤霞
周力
袁惠新
张衍
杨贺
LV FengXia ,ZHOU Li, YUAN HuiXin, ZHANG Yan, YANG He(School of Mechanical Engineering, Changzhou University, Changzhou 213164, China)
出处
《机械强度》
CAS
CSCD
北大核心
2018年第5期1221-1226,共6页
Journal of Mechanical Strength
基金
国家自然科学基金项目(21676031)
常州大学青年教师基金项目(ZMF14020075)资助~~
关键词
大变形
网格重划
封隔器
胶筒
非线性
Large deformation
Remeshing
Packer
Rubber
Nonlinear
