Abstract

The features of identifying the damping properties of viscoelastic materials caused by their dependence on a large number of external factors are discussed. The main propositions of the international standard on the experimental method for determining the damping properties of viscoelastic materials under cyclic tension–compression are analyzed. A refined finite element model of the dynamic behavior of the Oberst beam with a damping layer of a viscoelastic material with accounting of the transverse shear and compression is constructed. A numerical analysis of the error in determining the damping properties of a viscoelastic material under tension–compression caused by the neglect of transverse shear and compression strains arising in the layer of the material being tested is carried out.

中文翻译：

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确定拉伸压缩材料的阻尼特性的ASTM E756-05测试标准精度的研究

摘要

讨论了识别粘弹性材料的阻尼特性的特征，这些特性是由粘弹性材料依赖大量外部因素引起的。分析了用于确定粘弹性材料在循环拉伸压缩条件下的阻尼特性的实验方法的国际标准的主要建议。构造了具有粘弹性材料阻尼层的Oberst梁动力特性的精细有限元模型，并考虑了横向剪切和压缩。进行了数值分析，该误差用于确定粘弹性材料在拉伸压缩状态下的阻尼特性，该误差是由于忽略了被测材料层中产生的横向剪切力和压缩应变而引起的。