Workbench 子模型技术在球罐应力分析中的应用

摘要

Taking 3 000 m 3 liquefied hydrocarbon spherical tank for example ,the application of Workbench submodeling technology in spherical tank stress analysis is discussed .Bonded contact (based on the MPC algorithm) is used to form transition area to fulfill the subm-odeling technology from shell to solid in Workbench .Based on the total displacement contours of coarse model ,the cutting boundary of the submodeling is determined ,and 8 points on the cutting boundary is selected uniformly .The total displacements of the 8 points before and after mesh refining are compared so as to confirm the rationality of total displacement solution on cutting boundary .The results show that submodeling technique based on the Workbench can obtain better calculation results with less computational resources .%以3000 m 3液化烃球罐为例，对 Workbench 子模型技术在球罐应力分析中的应用进行了讨论。利用绑定接触（基于MPC 算法）形成过渡区域的方法在 Workbench 中实现了壳到体的子模型技术。根据粗糙模型的总体位移云图确定了子模型的切割边界，在子模型切割边界上均匀地选取了8个点，通过对比粗糙模型网格加密前后这8个点的总体位移解确认了切割边界上位移解的合理性。对比结果可知，基于 Workbench 的子模型技术在占用较少计算资源的情况下能获得精度较高的计算结果。