工程上通常用等效不变集中参数模型来模拟实际结构并进行动力分析。由于弹性体的振型特性在离散化后的得不到充分反映,上述模型存在着模拟误差,随着离散程度的增大,给分析精度带来的影响亦愈明显。本文提出的等效频变集中参数模型,弥补了这一不足,在离散化程度相同的条件下可以显著地提高分析精度,为实际结构建立少自由度集中参数模型,减少计算时间,实现优化设计提供了新的途径。 Engineering is usually equivalent to the same parameters of the same parameters to simulate the actual structure and dynamic analysis. Since the modal character of the elastomer can not be fully reflected after discretization, the above model has simulated error, and the influence on the analysis accuracy becomes more obvious as the degree of dispersion increases. The equivalent frequency-varying centralized parameter model proposed in this paper makes up for this problem. Under the condition of the same degree of discretization, it can significantly improve the accuracy of the analysis and establish a less-degree-of-freedom centralized parameter model for the actual structure to reduce the calculation time and achieve the optimal design Provide a new way.