粘弹性简支梁上的隔振器的参数

Parameters of vibration isolator on visco-elastic beam

本文以均匀粘弹性简支梁作为梁形柔性基础的力学模型。首先导出其上单级隔振系统的运动微分方程组，通过拉氏变换导出隔振系统的传递函数和隔振传递率。然后按照若干简化原则导出计算等效离散隔振系统力学参数的公式。数值计算结果表明，应用这种等效系统计算弹性梁上隔振装置参数在很宽的参数范围内能满足工程设计所需的精度。

The visco-elastic simple beam is taken as the mechanical model of flexible foundation with beam-wise.First,the differential eqations of motion of vibration isolation system are established.By using Laplace transform of partial differential equations and boundary conditions,the transfer function of the primary vibration isolation system can be deduced.Then,a set of principles if used to derive formulas for calculating the mechanical parameters of the equivalent discrete system.The numerical results show that the algorithm of the parameters of vibration isolator obtained from equivalent discrete system is suitable for the engineering design in a wide parameter domain.