华中科技大学学报（自然科学版）2017，Vol.45Issue(5)：61-66,6.DOI:10.13245/j.hust.170512
基于真实路谱再现的商用车驾驶室疲劳破坏
Fatigue failure assessment based on loading reproductionfor commercial vehicle cab
摘要
Abstract
To predict fatigue failure locations of vehicle with high accuracy, a methodology integrating virtual simulation technique and road testing was proposed and demonstrated on a commercial vehicle cab.A rigid and flexible multi-body model was built and verified to simulate the dynamics of cab under fatigue road testing.Loading spectrum at cab mounts were reproduced and verified by employing the virtual iteration method.Then, fatigue failure assessment was made by adopting strain-life method, and critical regions were figured out.The results show that regions around the B pillars were vulnerable due to stress concentration, and some structural improvements are made to improve its durability performance.The conclusion is drawn that the critical regions predicted with the proposed methodology agree well with the road testing results, and the improved design proves to have a better durability performance, which indicates that the proposed methodology is feasible and effective.关键词
商用车驾驶室/虚拟迭代/疲劳分析/局部应变法/结构改进Key words
commercial vehicle cab/virtual iteration/fatigue analysis/strain-life method/structural improvement分类
交通工程引用本文复制引用
王陶,王良模,Li Tan,邹小俊..基于真实路谱再现的商用车驾驶室疲劳破坏[J].华中科技大学学报（自然科学版）,2017,45(5):61-66,6.基金项目
江苏省南京市产学研资助项目(201306011). （201306011）
