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本文讨论粘弹性材料的隔振性能和材料的物理因素、形状、尺寸之间的关系,分析了高低阻尼材料隔振性能各自的优缺点。在此基础上,首次从定量的角度,较为精确地分析了高低阻尼双层纵向(串联)复合、双层平等(并联)复合材料的隔振性能以及抑制驻波效应的方法。为了验证理论分析的正确性,分别对双层纵向、平行复合材料的隔振性能进行了测试,结果表明:理论分析结果和实验结果能较好地吻合,本文的分析方法比采用模态分析方法,用一阶或多阶模型来模拟材料隔振性能的方法更加精确、简便、直观,应用本文的方法,可以对粘弹性材料用于隔振时进行设计。
In this paper, the relationship between the vibration isolation performance of viscoelastic material and the physical factors, shape and size of the material is discussed. The advantages and disadvantages of each vibration isolation performance of the high and low damping materials are analyzed. Based on this, for the first time, the vibration isolation performance and the method of suppressing the standing wave effect of high and low damped double longitudinal (series) composite and double equal (parallel) composite are analyzed for the first time quantitatively. In order to verify the correctness of the theoretical analysis, the vibration isolation performance of the double longitudinal and parallel composites was tested respectively. The results show that the theoretical analysis and experimental results agree well with each other. The analysis method of this paper is better than the modal analysis method , The first-order or multi-order model to simulate the material vibration isolation method is more accurate, simple and intuitive. The method in this paper can be used to design viscoelastic materials for vibration isolation.