粘弹性材料减振垫的设计方法分析

On the Design and Calculation of Vibration-Reducing Pad Made of Viscous-Elastic Materials

分析设计粘弹性材料减振垫时常采用的动力平衡方程计算法、经验公式计算法,以及试验测试法的不同.结果表明,3种方法的Kd-ω曲线比较接近,均适合粘弹性材料减振垫的设计计算,但动力平衡方程更接近于试验测试的情况,对于要求较高的关键部位的减振垫设计也更为合适.在实际应用中,可以根据具体要求来选取有限元计算的精确度,以使误差在所要求的范围之内.

The comparison of the method based on dynamic equilibrium, the method based on experienced formula and the experimental testing method is given, which are related with the viscous-elastic theory and commonly used in analysis and design of vibration-reducing pad made of viscous-elastic materials. The result of the comparison shows that the relation between Kd-ω using the 3 methods is very close. However, the result of the method based on dynamic equilibrium is nearer to that of the experimental testing method, more suitable for designing vibration-reducing pad, the key part of which has a higher requirement in technique. In the practical applications, the precision of the finite element model for the dynamic equilibrium can be chosen according to the technical requirements until the error is limited to the desired value.