填充橡胶超弹性本构参数试验与应用-工程力学-清华大学.PDF

第 26 卷第 6 期 Vol.26 No.6 工 程 力 学 2009 年 6 月 June 2009 ENGINEERING MECHANICS 193 文章编号：1000-4750(2009)06-0193-06 填充橡胶超弹性本构参数试验与应用 * 龚科家， 危银涛，叶进雄 (清华大学汽车工程系，汽车安全与节能国家重点实验室，北京 100084) 摘 要：橡胶本构参数的精确性对橡胶结构力学分析的精度有至关重要的影响。开发一种基于图像分析的完整橡 胶材料参数试验系统，并应用该系统对载重轮胎常用的橡胶进行了单轴拉伸、等双轴拉伸以及纯剪切的试验。在 此基础上研究了多项式、Ogden 以及Arruda-Boyce 等流行橡胶本构关系的可靠性、稳定性与精度。结果表明双轴 拉伸和纯剪切试验对确定可靠的橡胶本构是必不可少的。基于获得的橡胶本构参数对某全钢子午胎进行了充气和 静载有限元分析，并进行了试验对比。分析证明轮胎接地压力、最大应变能密度等关键参数与橡胶本构参数有较 大的相关性，二次多项式模型和 Ogden 模型在橡胶轮胎 FEA 中有较好的效果。 关键词：橡胶；超弹性；本构模型；载重轮胎；有限元 中图分类号：TQ330.1 文献标识码：A CONSTITUTIVE PARAMETRIC EXPERIMENT OF TIRE RUBBER HYPERELASTIC LAWS WITH APPLICATION * GONG Ke-jia , WEI Yin-tao , YE Jin-xiong (State Key Laboratory of Automotive Safety and Energy, Department of Automobile Engineering, Tsinghua University, Beijing 100084, China) Abstract: An accurate material parameter of rubber has a key influence in tire FEA. Based on the image analysis, an entire test system was developed and applied to perform a uniaxial tension, biaxial tension and planar tension tests of rubbers usually used by truck tires. The stability, reliability and accuracy of some constitutive laws are researched by the basis of these test results, such as Polynomial, Ogden and Arruda-boyce etc. These results show that the biaxial tension and planar tension test are necessary for the inflation and static loading analysis of a TBR tire. The numerical simulation results prove that the contact pressure and the maximum strain energy density depend on the rubber constitutive parameters seriously and the Polynomial (2 order) and Ogden constitutive laws have be