粘弹阻尼材料动态本构关系研究

Dynamic Constitutive Study for Visoelastic Damping Material

对丁基橡胶粘弹阻尼材料进行了不同温度的频率扫描和动态位移扫描实验。基于RT模型,本文提出了改进的M-RT模型,该模型同时考虑了温度、频率和动态位移对材料动态力学行为的影响,通过与实验结果比较分析,表明该模型能较好地描述该材料在宽温、宽频和宽动态位移的动态力学行为和预测温度、频率和动态位移对应力-应变迟滞回线的影响。

The tests of frequency sweeping and dynamic displacement sweeping at different temperature for the butyl viscoelastic material were conducted.Based on RT model,M-RT model was proposed to consider the influences of temperature,frequency and dynamic displacement.The comparison between the experimental and predicted results shows that the proposed model in the study can preferably well describe the dynamic constitutive behavior under broad temperature,broad frequency,broad dynamic displacement and predict stress-strain hysteresis loops curves considered the influences of temperature,frequency and dynamic displacement.