某型装载机翻滚保护结构侧向加载数值分析及验证  

Numerical Analysis and Verification of Lateral Loading of Roll-Over Protection Structure of a Loader

作　　者：杨晋博 傅爱军 张国顺 赵铁棨 张建 YANG Jinbo;FU Aijun;ZHANG Guoshun;ZHAO Tieqi;ZHANG Jian(Guangxi University of Science and Technology,Liuzhou,Guangxi 545006,China)

机构地区：[1]广西科技大学,广西柳州545006

出　　处：《汽车零部件》2023年第12期20-23,35,共5页Automobile Parts

基　　金：限定区域和特定场景智能网联汽车技术开发与示范应用(桂科AA22372)资助。

摘　　要：装载机的翻滚保护结构(roll-over protection structure,ROPS)是驾驶员在工程作业中的安全保障结构。提出采用LS-DYNA软件对某型装载机驾驶舱ROPS的动态响应过程进行非线性有限元仿真计算。对比仿真计算与试验结果发现,侧向加载过程中ROPS侧向承载力达到要求,有限元计算与试验误差范围在9%;加载结束后ROPS侧向能量吸收达到要求时,有限元计算与试验的误差为8.3%。在允许误差范围内,仿真ROPS的变形趋势与试验一致。仿真与试验均出现较大塑性变形,驾驶舱安全性能在法规允许范围内,说明该型装载机驾驶舱安全性能满足要求。该研究通过构建虚拟试验平台,并通过试验验证虚拟平台的准确性,为装载机驾驶舱的研发提供了一种可靠的非线性有限元计算方法,节省了研发成本,并为后期产品更改提出一套可靠的虚拟仿真方案。The roll-over protection structure(ROPS)of a loader is a safety structure for the operator during engineering operations.This paper proposed the use of LS-DYNA software to perform non-linear finite element simulation calculations on the dynamic response process of ROPS in the cab of a certain type of loader.After comparing simulation results with experimental results,it found that the lateral load-carrying capacity of ROPS met the requirements with an error range of 9%.When the lateral energy absorption requirement of ROPS was satisfied by the end of the loading,the difference between the finite element calculation and test results was 8.3%.The simulated deformation of ROPS was consistent with the experimental trend within the acceptable error range.Both simulation and experimentation showed significant plastic deformation,and the safety performance of the cab met regulatory requirements.This paper provides a reliable non-linear finite element calculation method for the development of loader cab safety,which saves development costs,and proposes a set of reliable virtual simulation platforms for future product changes through building a virtual testing platform and verifying its accuracy through experimentation.

关 键 词：侧翻保护 仿真验证 塑性变形 ROPS 动态有限元仿真 

分 类 号：U46[机械工程—车辆工程]