有限元领域中面向圆柱扫掠面特征的替换策略研究

摘要

In the finite element analysis, the calculation of the model with overcomplicated geometric attributes will lead to a huge cost of computing resources. As some kind of geometric attributes have little impact on the calculation result, simplification of those attributes will greatly increase the computing efficiency. In this paper, the relationship between sweeping path's curvature and mesh diametric is researched and the proper displacement strategy of cylinder sweeping feature which is prevalent in model is explored. Feature displacement reduces the cost of computing resources on the premise of a certain analysis concise. Finally, a simulation experiment focused on finite element thermal analysis is executed to verify the validity of the conclusions.%在有限元分析中,若有限元模型的几何属性过于复杂,则会导致计算资源的巨大消耗.在某次具体的计算中有些几何属性对计算结果的影响程度不大,若是简化这些几何属性,将极大的提高计算效率.针对此问题,以模型中常见的圆柱扫掠面特征为对象,特征替换为基本简化方式,通过研究扫掠路径的曲率与网格直径的关系,探索圆柱扫掠面特征的合适替换策略,在确保结果精度需求的基础上,尽可能减少计算资源的消耗.最后,以有限元热分析领域为切入点进行了仿真实验,验证了结论的有效性.