基于CAE的高空消防车变幅液压缸的结构优化

摘要

变幅液压缸是汽车起重机的核心零部件之一,其可靠性直接影响主机的性能.应用有限元法对变幅液压缸进行结构分析,发现缸筒的薄弱环节,为结构优化提供了方向;应用序列二次规划算法结合多目标结构优化方法,确定结构优化最佳方案,在提高油缸产品可靠性的基础上实现轻量化.%Luffing cylinder is one of the core parts of autocrane , its reliability directly affects the performance of the host .The fi-nite element method was used to find the weak links of the cylinder , it provided direction for structure optimization .The optimization of the structural parameter was realized based on SQP algorithm and multi-objective optimization .