摘要
基于柔性多体系统动力学的基本思想,提出了一种充分考虑衬套在不同方向上刚度耦合的新柔性体悬架衬套模型。采用模态综合法计算出变形量,解算出衬套模态。然后生成模态中性文件,并导入ADAMS/Car中以建立四连杆悬架的刚柔耦合动力学模型,并进行仿真和实车试验。结果表明,所采用的衬套柔性体模型要比传统衬套模型更精确,能在设计阶段更真实地预测与分析汽车悬架的性能。
Based on the basic idea of flexible multi-body system dynamics, a novel flexible body model for suspension bushing is put forward with consideration of the coupling of bushing stiffness in different directions. The deformations of bushing are calculated and its mode shapes are obtained by using modal synthesis technique. Then modal neutral files are generated and input into ADAMS/Car to establish a rigid-flexible coupling dynamics model for four-link suspension, and simulations and real vehicle tests are conducted. The results show that the flexible body bushing model established is more accurate than the conventional one, and can more truly predict and analyze the performance of vehicle suspension at design stage.
出处
《汽车工程》
EI
CSCD
北大核心
2012年第8期723-726,共4页
Automotive Engineering
基金
国家自然科学基金(50875173)
国家"十二五"863重大项目(2011AA11A265)
上海市科委重点项目(09DZ1100500)(10JC1411600)
上海汽车工业科技发展基金(1104)
上海市教委重点学科建设项目(150503)资助
关键词
衬套
四连杆悬架
柔性体模型
bushing
four-link suspension
flexible body model
