薄壁零件结构改进与性能优化

摘要

采用CAD/CAE技术研究薄壁箱式零件结构及其动力学性能。以某薄壁零件为研究对象，在 WorkBench平台上创建了有限元模型，计算和分析了该零件的低阶自振频率及振型。建立了4种针对薄壁零件动态特性改进的结构设计方案，通过动力学参数计算与分析确定了一种最佳的薄壁零件结构形式。结果表明：采用十字筋结构可以有效增强薄壁零件的抗振性能，有利于机械设备的减振降噪及高速化运行。为薄壁零件的结构设计与动力学优化提供了重要技术参考。%The CAD/CAE technical was used to study structure and dynamics characteristics of thin-walled parts.Based on a type of thin-walled part,its finite element model of was set up on WorkBench platform,and some low order natural frequency and vibration mode of its structure were also calculated and analyzed.Four structure de-sign schemes about improving dynamic characteristics of the part was established,and then an optimal structure of it was determined through calculating and analyzing its dynamic parameter.The results indicated that vibration resistance of the part could be strengthened effectively by using the cross rib structure,and it was also advanta-geous to vibration noise reduction and high speed operation of ma-chinery equipment as well.The study provided some important tech-nical reference for structure design and dynamics optimization of thin-walled parts.