飞机液压管路支撑的有限元建模方式对应力分析的影响

A Study on the Impact of the Stress Analysis by Using Different FEA Models for the Aircraft Hydraulic Tubing Support

在飞机典型液压导管不同构型和负载模式下,做了应力试验测量,得到应力试验的数据,并在有限元环境MSC.PATRAN中,针对导管的不同构型建立有限元分析模型,对每种构型下支架与卡箍采用八种不同的简化方式,得到仿真结果。然后将不同简化方式的仿真结果与试验结果作对比分析,考虑不同因素(如支架刚度、卡箍橡胶刚度、导管与橡胶间的摩擦与滑动等)对分析结果的影响,找到了在工程上简单易行,精度上可以接受的支撑简化方法。

Based on the different configurations and loading modes of the aircraft typical hydraulic tubing, the tested stress data was sampled and the FEA model was built in MSC. PATRAN. Considering the effects of different factors, different FEA models for the brackets and clamps of each configuration was built, and an easy and accurate simplified method for the brackets and clamps by comparing the test and simulation results were found.