摘要
建立了自由阻尼板振动方程,并对方程进行求解,探讨了固有频率和损耗因子之间的关系。分析粘弹性阻尼材料密度、泊松比、弹性模量、损耗因子等参数对减振性能的影响,计算了各个参数变化时结构固有振动频率和损耗因子的变化趋势,结果和阻尼材料特性吻合,因此本文的计算方法可为阻尼材料选择提供理论指导。
In the article,the vibration equations of free damping plate are established and solved to discuss the relationship between natural frequency and loss factor.The influence of density,Poisson＇s ratio,elastic modulus and loss factor of damping materials parameter on vibration reduction is analyzed,and the changing curves of natural frequency and loss factor with different value of the mechanical parameters are obtained.The results show coincidence with damping material＇s characteristics.So the calculation method mentioned in this paper is correct and useful for choosing damping materials.
出处
《广西职业技术学院学报》
2012年第4期1-7,11,共8页
Journal of Guangxi Vocational and Technical College
基金
乐山职业技术学院科研项目
编号:KY2012030
关键词
自由阻尼
力学参数
固有频率
损耗因子
free damping mechanical parameter natural frequency loss factor
