装配体结构动态分析中不同连接方法对比分析

Comparison and Analysis of Different Connection Methods in Structure Dynamic Analysis of Assemblies

在装配体结构动态分析中,不同零部件之间连接关系的简化方法有三种:节点耦合、刚/柔连接和MPC算法。通过对比实体模型中这三种方法的精度,得出结论:节点耦合和MPC算法的简化精度都比刚/柔连接高,而MPC建模更加方便、实用。将MPC算法应用于齿轮箱装配体模态分析中,得到很好的效果。

In the dynamic analysis of the assembly structure,there are three methods to simplify the connection between different components： node coupling,rigid / flexible connections and MPC algorithm. Through comparing the accuracy of the three methods in solid model connections and comes to the conclusion that the simplify accuracy of node coupling and MPC algorithm is higher than the rigid / flexible connection,while MPC algorithm is more convenient and practical. The MPC algorithm is applied to the modal analysis of a gearbox assembly,and a good result is got.