摘要
运用灵敏度分析法对某型搬运车的回转支撑架结构进行受力分析,得到确切的输入参数与输出参数之间关系的数学模型。以强度、刚度和稳定性约束条件以及轻量化的目标对回转支撑架结构进行数学建模和求解,明确其受力情况,为回转支撑架结构的优化提供理论依据。由构件受到的力及其强度极限可求得构件最小横截面积,按该面积设计出的构件在受压情况下会发生挠曲,产生失效的约束特征,引用柔度约束作为遗传算法的主要约束条件之一。采用Matlab软件中的遗传算法对回转支撑架部分结构进行优化,得到更合理的相应结构尺寸。利用Ansys Workbench软件对优化后的回转支撑架结构进行静力学分析和验证,得出符合预期的优化设计结果,表明此方法对受压框架优化具有一定的借鉴价值。
The sensitivity analysis method was used to analyze force of the rotary support frame structure of a certain type of moving truck, and the exact mathematical model was obtained in relation between input parameters and output parameters. To satisfied strength, stiffness and stability constraints and objective of the lightweight of rotary support structure, clarified its force by mathematical modeling and solving, and provided theoretical basis for the optimization of rotary support frame structure. The force on the component and its ultimate strength can be obtained by the minimum cross-sectional area, the structure designed in this area will fail, and referenced compliance constraint as one of the main constraints of genetic algorithm. The genetic algorithm in Matlab software was used to optimize the partial structure of rotary support frame and got a more reasonable structure size. Ansys Workbench software was used to analyze and verify the structure of the optimized rotary support frame, and the optimized design results of meeting expectations were obtained, it shows that the method has certain reference value for the optimization of compression frame.
作者
贺田龙
许志沛
唐林
敖维川
He Tianlong;Xu Zhipei;Tang Lin;Ao Weichuan(College of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China)
出处
《现代制造工程》
CSCD
北大核心
2019年第9期118-123,75,共7页
Modern Manufacturing Engineering
基金
中央高校基本科研业务费用专项资金资助项目(2015ZT03)
关键词
回转支撑架
优化设计
灵敏度分析
遗传算法
柔度约束
rotary support frame
optimal design
sensitivity analysis
genetic algorithm
compliance constraint
作者简介
贺田龙,硕士研究生,主要研究方向为机械设计及理论。E-mail:1655653705@qq.com;许志沛,硕士生导师,副教授,主要研究方向为起重运输与工程机械。
