摘要
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.
出处
《广东造船》
2017年第2期47-50,共4页
Guangdong shipbuilding
基金
广州市科技和信息化局"船舶尾气废热驱动的热声制冷关键技术与物理样机研制"项目的支持
项目编号:2014J4100060
关键词
悬臂梁
固有频率
阻尼比
损耗因子
Cantilever beam
Natural frequency
Damping ratio
Loss factor