摘要
车辆悬挂参数(尤其是弹簧动刚度)与车辆的运行性能有着密切联系。为此以金属螺旋弹簧为例,利用有限元方法,研究弹簧的动态特性,并通过实验对其进行了实验验证,证实金属螺旋弹簧确实存在显著的频变特性。在弹簧的运用过程中,弹簧除自身质量之外还有簧载质量,由于簧载质量的存在对弹簧的动态特性存在着影响。为此,我们对簧载质量对弹簧动态特性的影响作了专门的研究,研究表明,随着簧载质量的增大,弹簧自身质量对动态性能影响减弱。
The vehicle performance has closely relation to suspension parameters （especially dynamic stiffness）.In the light of this,the paper took example for metal helical spring.Dynamic characteristics were studied in metal helical spring by FEM.An experiment was designed to validate the result,and the experiment proved that remarkable dynamic characteristics existed in metal helical spring.During the course of the spring operation,the spring bears the weight of load.The mass of the load has effect on dynamic characteristics of the spring,so we specially studied on the relationship between the mass of the load and dynamic characteristics.As the result,the effect of the spring＇s mass on dynamic characteristics is weakened with the increasing of the mass of the load on the spring.
基金
国家自然科学杰出青年基金资助项目(50525518)
国家重点基础研究发展计划项目(973计划)(2007CB714701)
教育部博士点基金资助项目(20040613006)
关键词
车辆工程
动刚度
有限元
螺旋弹簧
共振
反共振
vehicle engineering
dynamic stiffness
finite element
helical spring
resonance
anti-resonance
