摘要
建立硅橡胶的有限元模型,以固有频率为评判标准,选择可靠的非线性瞬态分析方法以及硅橡胶超弹性本构模型对其进行动态特性分析。首先建立减振系统的有限元模型,通过理论分析,选用单步Houbolt法计算与常用的橡胶超弹性本构模型对应的减振器的加速度响应,然后进行傅里叶变换,从而提取出固有频率;接着采用自主研制的基于锤击法的振动测试系统进行实验测得减振器固有频率。通过两者结果比较验证了单步Houbolt法的可靠性,同时表明用Signiorini模型模拟硅橡胶材料的动态特性是更为合理的。在此基础上,分析了硅橡胶减振器轴向尺寸和径向尺寸参数对其动态特性的影响,从而为硅橡胶减振器的设计与应用提供了理论依据。
The finite element model of silicon rubber absorbers is established. With the natural frequency as a criterion, the reliable nonlinear transient analysis method and the silicon rubber hyperelastic constitutive model m-e used to analyze the dynamic characteristics of the absorbers. First of all, the finite element model of the vibration absorber system is set up. Through the theoretical analysis, the single step Houbolt method is used to calculate the acceleration response of the absorbers corresponding to the commonly used rubber hyperelastic constitutive model. Then, the Fourier transform is carried out to extract the natural frequencies. Finally, the natural frequencies of the absorbers are measured by the vibration test system based on hammering method. The results confirm the reliability of the single step Houbolt method, and show that the Signiorini model is more reasonable for simulating the dynamic characteristics of the silicon rubber material. On this basis, the influence of the axial size and radial size parameters of the silicon rubber absorbers on its dynamic characteristics is analyzed. This work has provided a theoretical basis for the design and application of silicon rubber absorbers.
作者
刘晓东
李俊杰
曹逢源
姜洪雷
LIU Xiaodong;LI Junjie;CA O Fengyuan;JIANG Honglei(School of Mechanical and Energy Engineering,Tongji University,Shanghai 201804,China)
出处
《噪声与振动控制》
CSCD
2018年第6期194-198,共5页
Noise and Vibration Control
关键词
振动与波
硅橡胶减振器
非线性动力学
振动测试系统
有限元分析
动态特性
vibration and wave
silicon rubber absorbers
nonlinear dynamics
vibration test system
finite element analysis
dynamic characteristics
