粘弹性阻尼材料力学参数测试实验用双边附加自由结构阻尼试件设计方法研究

王超;吕振华

振动与冲击 ›› 2014, Vol. 33 ›› Issue (5) : 102-108.

PDF(1818 KB)
PDF(1818 KB)
振动与冲击 ›› 2014, Vol. 33 ›› Issue (5) : 102-108.
论文

粘弹性阻尼材料力学参数测试实验用双边附加自由结构阻尼试件设计方法研究

  • 王超,吕振华
作者信息 +

Research on the Design Methods of Specimens Damped Both SidesUsed in the Measurement of Viscoelastic Damping Material’s Mechanics Parameters

  • WANG Chao, LÜ Zhen-hua
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文章历史 +

摘要

悬臂梁弯曲共振法测量粘弹性阻尼材料力学参数的实验中常以双边附加自由结构阻尼试件为实验对象。实验中试件设计的合理程度直接影响实验的测试精度。为了指导试件设计,通过灵敏度分析提出了影响系数的概念,并将其应用于分析试件的厚度比、共振频率比、密度比、损耗因子等参数的测量误差对粘弹性材料力学参数测试精度的影响中,进而对试件的设计提出一些有重要意义的技术规范。最后,基于悬臂梁弯曲共振法获取粘弹性材料力学参数的实验,分析了双边自由阻尼结构试件的适用范围。

Abstract

The specimens with supplemental structural damping at both sides are frequently used in the measurement of viscoelastic material’s mechanics parameters through flexural resonating cantilever beam method(FRCBM). Appropriate design of specimens decides the accuracy of experimental results. Though sensitivity analysis, influence coefficient was proposed and used in the analysis of experimental results which were affected by the measurement accuracy of thickness ratio, resonance frequency ratio, density ratio and loss factor of the specimen, and some significant technical specifications were proposed to help design the specimens. Finally, the applicability of the specimens damped both sides used in the measurement of mechanics parameters through FRCBM was analyzed.


关键词

粘弹性材料 / 试件设计 / 影响系数 / 灵敏度分析 / 结构阻尼

Key words

viscoelastic material / specimen design / influence coefficient / sensitivity analysis / structural damping

引用本文

导出引用
王超;吕振华. 粘弹性阻尼材料力学参数测试实验用双边附加自由结构阻尼试件设计方法研究[J]. 振动与冲击, 2014, 33(5): 102-108
WANG Chao;LÜZhen-hua. Research on the Design Methods of Specimens Damped Both SidesUsed in the Measurement of Viscoelastic Damping Material’s Mechanics Parameters[J]. Journal of Vibration and Shock, 2014, 33(5): 102-108

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