Temperature-Dependent Tearing Behavior of Rubber Materials:Characterization and Modeling
作者机构：State Key Laboratory of Coal Mine Disaster Dynamics and ControlChongqing UniversityChongqing400044China College of Aerospace EngineeringChongqing UniversityChongqing400044China
出 版 物：《Acta Mechanica Solida Sinica》 (固体力学学报（英文版）)
年 卷 期：2024年第37卷第2期
页 面：316-326页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0801[工学-力学（可授工学、理学学位）]
基 金：the National Natural Science Foundation of China(12172069) the Graduate Scientific Research and Innovation Foundation of Chongqing(CYS23078)for their support in this research
主 题：Temperature-dependent Critical tearing energy Tear strength Rubber Theoretical model
摘 要：With the increasingly widespread application of rubber in many fields,there is a growing demand for quantitative characterization of temperature-dependent mechanical properties in high-temperature service *** critical tearing energy is an important criterion for determining whether rubber materials will experience tearing instability,while tear strength is a key parameter for rubber materials to resist *** is necessary to quantitatively characterize their evolution with *** theoretical research mainly relies on fitting a large amount of experimental data,which is not convenient for engineering ***,in this work,a temperature-dependent critical tearing energy model is firstly developed based on the force-heat equivalence energy density *** model considers the equivalent relationship between the critical tearing energy required for crack instability propagation and the thermal energy stored in the rubber *** is demonstrated that our model has higher prediction accuracy when compared to other ***,combining with the Griffith fracture theory,temperature-dependent tear strength models applicable to three different crack modes are separately *** models are validated using experimental data for Mode I opening cracks and ModeⅢtearing cracks,and good consistency is ***,a quantitative analysis of the influence of elastic modulus on tear strength at different temperatures is *** work provides a reliable way for predicting temperature-dependent tearing instability behavior and offers beneficial suggestions for improving the tear strength of rubber materials at different temperatures.
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