基于最大应变能密度幅值的胎圈疲劳寿命预测方法  

Fatigue life prediction method of bead region based on maximum strain energy density amplitude

作　　者：曹雷天 王国林[1] 梁晨[1] 柏林 王伟斌 CAO Leitian;WANG Guolin;LIANG Chen;BO Lin;WANG Weibin(Jiangsu University College of Automotive Engineering, Zhenjiang 212013,China;Jianda Rubber (China) Co., LTD, Kunshan 215300, China)

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013 [2]建大橡胶(中国)有限公司,江苏昆山215300

出　　处：《弹性体》2021年第5期1-6,共6页China Elastomerics

基　　金：国家自然科学基金资助项目(51675240)。

摘　　要：以175/75R14型轻卡子午线轮胎为研究对象,建立了轮胎有限元模型,通过单轴拉伸实验获得轮胎胎圈的各部分胶料参数,确定了胎圈区域各胶料的关于最大应变能密度幅值(ΔSEDmax)的疲劳寿命(Nf)方程。利用ABAQUS建立了轮胎自由滚动有限元模型,并使用转鼓耐久实验的相关参数进行仿真模拟,同时与耐久实验结果进行对比,通过4组同型号不同断面结构参数轮胎的耐久实验结果与仿真预测结果对比,证明了使用基于应变能密度的方法预测胎圈Nf可行性,同时证明了使用最小应变为0的单轴拉伸实验获得的材料参数在预测胎圈区域寿命时存在预测值偏小的情况。The tire finite element model was established for the radial tire of type 175/75R14 light truck.The rubber material parameters of each part of tire bead were obtained by uniaxial tensile test,and the fatigue life equation about the maximum strain energy density amplitude(ΔSEDmax)of each rubber material in tire bead area was determined.Tires free rolling was established based on ABAQUS finite element model.We used the drum endurance test simulation for the related parameters of the simulation,compared with endurance test results at the same time.We used the four groups of the different cross section structure parameters of tire endurance test results compared with the simulation prediction results,and proved that the method based on strain energy density for predicting fatigue life of bead was feasibly.At the same time,it is proved that the material parameters obtained by uniaxial tensile test with minimum strain of 0 are too small to predict the life of the bead area.

关 键 词：子午线轮胎 有限元分析 应变能密度 疲劳寿命 

分 类 号：TQ336.1[化学工程—橡胶工业] O242.21[理学—计算数学]