摘要
以复合材料的微观力学理论和宏观力学理论为基础 ,探讨了轮胎有限元分析用帘线 /橡胶复合材料弹性常数的测试。对哈尔平 蔡方程式、高夫 汤哥拉方程式和赤坂 平野方程式在简化为单层横向同性体帘线 /橡胶复合材料弹性常数 (纵向弹性模量E1、横向弹性模量E2 、面内剪切模量G12 、主泊松比 μ12 和次泊松比μ2 1)计算中的应用进行了分析探讨。提出用钢丝帘线横截面积变化率来表征钢丝帘线的泊松比 μc,并推荐用截面固结法测试 μc。可用激光散斑法、云纹法 (配合微机图像处理技术 )和轨道剪切法测试不同的钢丝帘线 /橡胶复合材料弹性常数。对 μ12 大于
The determination of the elastic constants for cord/rubber composite in FEA of tire was investigated based on the micro and macro mechanical theories.The application of Halpin Tsai formula,Gough Tangorra formula and Akaka Hirano formula in the calculation of the elastic constants of cord/rubber composite (longitudinal elastic modulus E 1,lateral elastic modulus E 2,shear modulus in plane G 12 ,primary Poissons ratio μ 12 and second Poissons ratio μ 21 ) which were simplified as a single ply composite of same nature in lateral direction was described.It was proposed that the charge percentage of the cross sectional area of steel cord could be used to chareacterize the Poissons ratio of steel core μ ,and recommended that the fixed cross section method was used to determine μ .The elasticconstants of different cord/rubber composites could be determined by laser spot scatter method,clou ding method and rail shear method.The phenomenon that μ was greater than 1 was discussed.
出处
《轮胎工业》
CAS
2001年第4期195-200,共6页
Tire Industry
基金
国家自然科学基金资助项目 !(5 95 730 0 3)
