华中科技大学学报（自然科学版）2016，Vol.44Issue(6)：29-34,6.DOI:10.13245/j.hust.160606
基于超单元建模法的车身动力学仿真分析
Vehicle body dynamics simulation and analysis based on the super-element modeling method
摘要
Abstract
For increasing the computational efficiency of vehicle body dynamics simulation,a method for body structure dynamics simulation analysis was proposed in this paper.According to the method,a MPV(multi-purpose vehicle)body structure was divided into several subsystems and then body modal parameters and frequency functions were obtained through super-element reduction,residual structure solution and super-element data recovery.The study results show that compared to tradi tional modeling method,computational time is reduced approximately respectively by 6.9％ in body modal analysis and 87.7 ％ in the vehicle acceleration simulation and body optimization based on frequency response analysis without reducing accuracy.And in vehicle acceleration simulation,vehicle interior vibration-response-simulated results are in accordance with on-road test in aspects of trend and peak frequency points.关键词
车身结构/动力学仿真/超单元建模法/计算精度/计算效率Key words
body structure/dynamic simulation/super-element modeling method/computational accuracy/computational efficiency分类
交通工程引用本文复制引用
刘志恩,何洁,郑灏,肖生浩..基于超单元建模法的车身动力学仿真分析[J].华中科技大学学报（自然科学版）,2016,44(6):29-34,6.基金项目
国家自然科学基金资助项目(51575410) （51575410）
武汉理工大学自主创新基金资助项目(2013-Ⅶ-033). （2013-Ⅶ-033）
