摘要
本文用粘弹性材料中应力波的弥散及衰减特性的实验数据来计算材料的动态力学性能参数。用塑料杆的纵波实验,测定了材料的拉压复柔量,并探讨了用横波实验测定材料剪切复模量的方法及有关问题。由测定结果在理论分析中应用,讨论了结果的可靠性。
Abstract The dispersive and damping characteristics of longitudinal and flexural waves in a long PVC beam are studied experimentally.The complex compliance is obtained from longitudinal impact test using the Fourier analysis.The reliability of the results and some prob- lems involved in estimating the shear complex modulus by flexural impact test are discussed.
出处
《实验力学》
CSCD
北大核心
1992年第1期30-35,共6页
Journal of Experimental Mechanics
关键词
动态力学性能
粘弹性
应力波
dynamic mechanical properties,viscoelasticity,stress wave.