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不同本构模型对橡胶制品有限元法适应性研究

DOI: 10.6052/1000-0879-13-030, PP. 40-47

Keywords: 橡胶制品,非线性有限元法,本构模型,适应性

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Abstract:

为确定不同本构模型对橡胶制品进行非线性有限元分析的适应性,采用HyperMesh和ABAQUS软件建立了橡胶标准试件和防尘罩制品的非线性有限元模型.根据标准试件单轴拉伸试验数据,利用ABAQUS软件拟合了Mooney——Rivlin,Ogden及Yeoh3种本构模型的特征参数,并给出了试件和制品轴向拉伸和压缩工况有限元分析结果.实测试验与有限元分析结果对比发现在应变不大于100%时,两参数的Mooney——Rivlin本构模型计算误差较小;在应变大于100%时,用Yeoh和Ogden本构模型计算误差较小.该结论对大变形橡胶元件的非线性特性理论分析具有实际意义.

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