黏弹性材料动态时温模型及其宽频域动态力学特性研究  

Research on dynamic time-temperature model and dynamic mechanical characteristics in wide frequency domain of viscoelastic material

作　　者：王瑶 董志飞 李占龙[1] 秦园[1] 王娜 WANG Yao;DONG Zhifei;LI Zhanlong;QIN Yuan;WANG Na(School of Vehicle and Traffic Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,Shanxi,China;School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,Shanxi,China)

机构地区：[1]太原科技大学车辆与交通工程学院,山西太原030024 [2]太原科技大学机械工程学院,山西太原030024

出　　处：《中国工程机械学报》2023年第4期303-307,共5页Chinese Journal of Construction Machinery

基　　金：山西省基础研究计划资助项目(202203021212317,202203021212319);山西省高等学校大学生创新创业训练计划项目(S202310109672);太原科技大学博士启动基金项目(20222094);太原科技大学教学改革创新项目(JG202271);山西省高等学校科技创新项目(2022L319);国家自然科学基金资助项目(52272401)。

摘　　要：受真实作业工况中高频冲击载荷的影响,黏弹性材料的动态力学特性产生了较大的变化。为了准确预测宽频域内材料动态力学特性的变化情况,依据时温等效原理,结合Vogel-Fulcher-Tammann黏度方程,建立黏弹性材料动态时温等效(DTT)模型,并与分数阶温频等效模型进行对比。结果表明:DTT模型构造的主曲线具有更好的连续性和一致性,能更加精准地预测宽频域内黏弹性材料的动态力学特性。基于DTT模型,提出了构造宽频域内材料动态力学特性主曲线和诺模图的方法,同时,为了降低计算成本,缩短产品研制周期,研发了一款黏弹性材料动态力学性能计算与分析专用软件。Under the impact of the high frequency impact load in the operating condition,the dynamic mechanical characteristics of the viscoelastic material changed significantly.In order to predict the dynamic mechanical characteristics of the viscoelastic material in wide frequency domain precisely,the dynamic time-temperature(DTT)model is established based on the time-temperature equivalence principle and the Vogel-Fulcher-Tammann viscosity equation.The comparison between the DTT model and the fractional-order time-temperature equivalence model is made.The results show that the main curves constructed by DTT model are more continuity and consistency.And the DTT model can predict the dynamic mechanical characteristics of the viscoelastic material in wide frequency domain more precisely.Based on DTT model,the constructive method of the main curve and nomograph in wide frequency domain of the viscoelastic material are developed.Furthermore,to reduce the computing cost and production development cycle,a proprietary software for calculating and analyzing the dynamic mechanical characteristics of the viscoelastic material is developed.

关 键 词：黏弹性 动态时温模型 宽频域 力学特性 主曲线 

分 类 号：O328[理学—一般力学与力学基础]