摘要
以描述高分子材料粘弹行为的三元模型为出发点,以声波在高分子介质中的传播理论为依据,推导出了材料的水声声衰减能力与材料的动态力学性能参数包括损耗因子、松弛前的剪切模量、松弛后的剪切模量以及材料的密度和厚度之间的关系式。为实验验证所推导的关系式,设计合成了一系列阻尼性能不同的聚合物,分别测试了它们的动态力学性能和声衰减能力。用材料的动态力学性能参数计算得到的水声声衰减系数与实验测得的声衰减能力相符合。该数学模型为找出吸声系数与材料的动态力学性能之间的关系、指导水声材料设计奠定了基础。
By corn polymer viscoelasticity polymer materials as a ing the theory, function sound propagation theory in viscoelastic polymer material and the mathematical model relating sound attenuation coefficient of of loss factor, modulus, density and frequency was established.In order to check the mathematical model, a series of polymers were designed and synthesized. Their acoustic attenuation coefficients and dynamic mechanical properties were measured. The acoustic attenuation coefficients tested are in good agreement with the calculated data. This mathematical model provides a theoretical basis to estimate the acoustic absorption property of polymer materials and can be used to design high performance underwater acoustic absorption materials.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2006年第5期121-124,共4页
Polymer Materials Science & Engineering
基金
海军工程大学基金
海军工程大学理学院基金.
关键词
声衰减能力
阻尼性能
水声吸声材料
数学模型
acoustic attenuation
dynamic mechanical property
underwater acoustic absorption materials
mathematical model
