摘要
利用通用有限元软件ANSYS建立自卸车机架和安装在驾驶室上的翻车保护结构(ROPS)的非线性有限元模型,再利用通用显式动力分析程序LS-DYNA进行求解和后处理,确定侧向加载的极限载荷,设计侧向、垂向和纵向3个方向的加载曲线,求解得到ROPS加载的变形情况。将有限元分析结果与国际标准ISO 3471:2008进行比较,验证所设计加载曲线的合理性。根据设计的加载曲线进行现场翻车保护试验,提取的试验数据与仿真结果吻合较好,最大相对误差仅为3.33%,说明采用有限元仿真方法替代现场试验对大型自卸车驾驶室安全性进行评估是可行的。
By using ANSYS, nonlinear finite element model of dump truck frame and roll-over protective structure （ROPS） fixed On cab was built, then by making use of LS-DYNA as equation solver and post-processor, maximum load force of lateral loading was determined. Loading curves of lateral, vertical, longitudinal direction were designed and the deformation after loading on ROPS was got. By comparing the result with international standards ISO3471：2008, rationality of the designed loading curves was verified. Corresponding experiment was performed according to curves designed by simulation. Statistics from experiment show good accordance with simulation results, and the biggest relative error is just 3.33%. This approves the feasibility of evaluating safety performance of cab of large dump truck using finite element analysis instead of experiments.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第12期4847-4854,共8页
Journal of Central South University:Science and Technology
基金
国家高新技术研究发展计划("863"计划)项目(SS2012AA041809)
湖南省科技重大专项计划项目(2010FJ1003-2)
关键词
大型自卸车
有限元法
安全性
翻车保护结构
large dump truck
finite element method
safety performance
roll-over protective structure （ROPS）
