摘要
对有蒙皮车身侧围和无蒙皮车身侧围两种车型的模态计算得到的频率及振型的比较及两种情况下车身模型某些参数的比较 ,说明汽车车身蒙皮能大大提高侧围部分的抗弯刚度和抗扭刚度 ,对车身的质量、转动惯量也有较大的影响 .因此 ,要提高汽车车身的有限元分析精度 。
The frequencies and vibration types from model analysis as well as some parameters of the car body with and without cover are compared. The results show that the cover can enhance the torsion and bend stiffness of the car body. The mass and the moment of inertia of car body are also affected by the cover. Thus, to obtain an accurate result in FEA of the car body, the effect on cover to dynamic property must be considered.
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2002年第4期598-600,共3页
Journal of Southeast University：Natural Science Edition
基金
国家科委"九五"地方攻关计划资助项目 (97-D0 46)
江苏省科委"九五"重大科技攻关资助项目 (GB960 0 5 )
关键词
汽车
车身蒙皮
动态性能
有限元
扭转刚度
弯曲刚度
Bending strength
Dynamics
Finite element method
Stiffness
Torsional stress
Vibrations (mechanical)
