提高PL160LC-8型挖掘机斗齿疲劳寿命的优化设计  

Optimization design for improving fatigue life of bucket tooth of PL160LC-8 excavator

作　　者：徐西林 王振乾 XU Xilin;WANG Zhenqian(School of Mechanical&Vehicle Engineering,Linyi University,Linyi 276000,Shandong,China)

机构地区：[1]临沂大学机械与车辆工程学院,山东临沂276000

出　　处：《矿山机械》2020年第6期15-19,共5页Mining & Processing Equipment

基　　金：山东省自然科学基金资助项目(ZR2019PEE024);临沂大学高层次人才科研启动项目(LYDX2019BS010);临沂大学大学生创新训练项目(X201910452035)。

摘　　要：为了提高挖掘机斗齿的疲劳寿命,解决斗齿在复杂工况下容易发生疲劳失效的问题,利用ANSYS Workbench对斗齿进行疲劳计算,在Design Exploration模块中进行参数敏感性分析,筛选出影响斗齿疲劳寿命的主要结构参数,进而以疲劳寿命为目标函数进行自适应单目标直接优化。结果表明,优化后斗齿的疲劳寿命明显提高。In order to improve the fatigue life of the bucket tooth of the excavator and solve the problem that the bucket tooth is prone to fatigue failure in complex operation mode, the fatigue calculation of the bucket tooth were carried out through ANSYS Workbench, and the parameter sensitivity analysis was conducted in the module of Design Exploration. After that, the main structural parameters affecting the fatigue life of the bucket tooth were sieved out, and then the fatigue life of the bucket tooth was taken as the objective function to conduct adaptive single objective direct optimization. The results showed that the fatigue life of the bucket tooth significantly enhanced after optimization.

关 键 词：挖掘机斗齿 疲劳寿命 参数敏感性分析 KRIGING模型 自适应单目标直接优化 

分 类 号：TD422.2[矿业工程—矿山机电] TP391.9[自动化与计算机技术—计算机应用技术]