粘弹性阻尼材料损耗因子的测试及误差分析

Loss Factor Measurement of Viscoelestic Damping Materials and Error Analysis

用脉冲激振进行结构模态分析的方法,实测常温下有/无SD01粘弹性阻尼胶的悬臂梁的固有频率和损耗因子,并计算出阻尼材料的损耗因子,并探讨影响测试精度的主要因素。结果表明,本文的测试方法简单实用,测量结果能够用来评估阻尼材料在常温下的性能。

Based on hammer excitation method, the natural frequencies and loss factors of cantilever beamswith/without SD01 viscoelastic composite are measured at room temperature. Further, the loss factors at somenatural frequencies of the viscoelastic composite are calculated and the main factors determining the test accuracyare discussed. The results show that the measurement method proposed is simple and practical, and the loss factorsobtained can be used to evaluate the damping performance at room temperature.