冬枣辅助采摘车车架结构优化设计——基于层次分析法  

Optimum Design of Frame Structure of Jujube Assisted Picking Car——Based on Analytic Hierarchy Process

作　　者：刘广新 王淑君[2] 赵玉刚[1] 蔡善儒[2] Liu Guangxin;Wang Shujun;Zhao Yugang;Cai Shanru(School of Mechanical Engineering,Shandong University of Technology,Zibo 255049,China;College of Agricultural Engineering and Food Science,Shandong University of Technology,Zibo 255049,China)

机构地区：[1]山东理工大学机械工程学院,山东淄博255049 [2]山东理工大学农业工程与食品科学学院,山东淄博255049

出　　处：《农机化研究》2019年第8期22-28,共7页Journal of Agricultural Mechanization Research

基　　金：山东省农机装备研发创新计划项目(2016YF023)

摘　　要：为了提升冬枣辅助采摘车的作业性能,对车架结构做了多目标优化设计。在不改变车架原有设计结构的基础上,选取车架19个主要构件的厚度作为设计变量,通过Pro/E和AWB软件建立了车架有限元模型。为了能够准确得到有限元分析数据,设计了试验验证,并对车架进行了有限元静动力学分分析。为了得到车架各性能参数随设计变量变化的灵敏度,使用了AWB作为计算软件,并结合灵敏度分析结果,选取了对车架动静态性能影响较大的设计变量,建立了数学模型并求解得到5组解。同时,采用层次分析法对所得的5组解进行决策优选,获得了最优设计方案。研究表明:建立的有限元模型合理准确;采用层次分析法优化后较优化前车架总质量降低7. 01%,低阶频率提高2. 17%,最大应力降低7. 32%。To improve the jujube auxiliary picking operation performance,the frame structure needs multi-objective optimization design.Based on the original structure of the frame,the thickness of 19 main components of the frame was selected as the design variable.The finite element model of the frame was established by the excellent performance of Pro-E and AWB.To verify the accuracy of the finite element model established by design experiments.The static analysis and modal analysis of the frame are carried out.The AWB is used to calculate the sensitivity of the frame with the variation of the design variables.The mathematical model is established based on the sensitivity analysis and the solution is obtained.Using AHP method,the optimal solutions are obtained through the decision-making and optimization of the five solutions obtained.The research shows that the finite element model established is reasonable and accurate.The optimized total mass of the front frame is reduced by 7.01%,the frequency is increased by 2.17%and the maximum stress is reduced by 7.32%.

关 键 词：冬枣辅助采摘车 多目标优化 层次分析法 灵敏度分析 ANSYS WORKBENCH 

分 类 号：S225.93[农业科学—农业机械化工程]