作业车吊臂结构分析与优化设计

摘要

Telescopic boom is the main component of the worLing device of operation vehicle, and its design directly influences the worLing performance of the worLing vehicle. With the minimum mass of the hanging arm as the optimization objective, the mathematical model of the boom optimization is established under the constraints of strength and stiffness, in the finite element software ANSYS WorLbench, the parametric model of the boom structure of the operation vehicle is established, and the response surface and sensitivity analysis of the design parameters are carried out, combined with multi-objective genetic algorithm, multi-objective optimization design of boom section parameters is carried out, and the optimal section form is obtained. The results show that the maximum stress, the maximum deformation and the quality of the optimized boom are reduced, on the basis of improving the comprehensive performance of the boom, the purpose of reducing the weight of the boom is achieved, which provides a train of thought and reference for the design and optimization of the boom structure of the mine operation vehicle.%伸缩臂架是作业车工作装置的主要构件,其直接影响作业车的工作性能.以吊臂质量最小为优化目标,以强度、刚度等为约束条件建立了优化的数学模型,在有限元软件ANSYS WorLbench中建立作业车吊臂结构参数化模型,对各设计参数进行了响应曲面和敏感度分析,结合多目标遗传算法对吊臂截面参数进行了多目标的优化设计,得到了最优的截面形式.结果表明优化后臂架的最大应力、最大变形量和质量都有所减小,实现了在提高臂架综合性能的基础上减小自重的目的,为作业车臂架结构的设计与优化提供了思路与参考.