摘要
将整车模型划分为多个子结构,包括动力总成子结构、副车架子结构、车身子结构、非簧载质量子结构及多个线性和非线性连接子结构等,采用含线性和非线性连接子结构的间接对接的自由界面模态综合法,建立整车迟滞非线性刚弹耦合系统动力学模型.为了验证模型的正确性,用所建模型在时域内对前后轴分别激励时汽车振动特性进行仿真模拟,并与相同工况下的台架试验结果进行对比,两者具有较好的一致性.研究表明模态综合技术可以推广应用到具有局部非线性的复杂结构系统建模和动力学特性研究过程中.
For a car including power train, engine cradle, car body, mass without spring and those substructures with linear and nonlinear joints, the scheme of component mode synthesis is employed to model dynamical systems of the car with hysteresis nonlinearity and rigid-elastic coupling. Based on the mathematical model, the time-history is obtained numerically for the front and back axes subjected to external excitation. The numerical results are in good agreement with those of the bench test, which implies that the mathematical model is valid and reliable. This paper also suggests that scheme of component mode synthesis can be extended to model local nonlinear systems with complex structures.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第11期1525-1529,共5页
Journal of Tongji University:Natural Science
关键词
汽车动力学
动态子结构
模态综合法
振动
迟滞非线性
dynamics of automobile
dynamic substructure
component mode synthesis
vibration
hysteresis nonlinearity
