考虑牙间均载的拉杆螺纹连接多目标优化

发布时间：2018-05-15 08:10

  本文选题：螺纹连接 + 多目标优化　； 参考：《中国机械工程》2017年17期

【摘要】：为提高机架螺纹连接寿命,运用弹塑性接触有限元方法对拉杆连接螺纹进行强度分析,结合参数化建模,建立考虑牙间均载和应力峰值的多目标优化模型,采用径向基函数(RBF)神经网络方法和带精英策略的非支配排序遗传算法(NSGA-Ⅱ)求解。结果表明:牙侧角约为15°时,牙间轴向载荷分布不均匀率减小13.6%,等效应力峰值减小6.9%,第一主应力峰值减小11.5%。
[Abstract]:In order to improve the life of frame thread connection, the strength analysis of strut joint thread is carried out by using elastic-plastic contact finite element method, and a multi-objective optimization model considering the peak stress and uniform load between teeth is established with parameterized modeling. The radial basis function (RBF) neural network method and the undominated sorting genetic algorithm (NSGA- 鈪，

本文编号：1891667