A New Biaxial Tension Test Fixture for Uniaxial Testing Machine—A Validation for Hyperelastic Behavior of Rubber-like Materials
A New Biaxial Tension Test Fixture for Uniaxial Testing Machine—A Validation for Hyperelastic Behavior of Rubber-like Materials
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DOI：
10.1520/jte100688
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发表时间：
2007-07
影响因子：
1.2
通讯作者：
M. Brieu;J. Diani;N. Bhatnagar
中科院分区：
文献类型：
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作者：
M. Brieu;J. Diani;N. Bhatnagar
开发了一种新的双轴拉伸测试机制，用于在两个主方向上同时加载面内样本。该机构可适用于任何单轴拉伸试验机，从而降低在昂贵机器上进行测试的成本。它提供了表征任何材料系统双轴载荷的过程所必需的等双轴张力的均匀状态，特别是对于理解类橡胶材料在大变形下的超弹性行为定律。该机制还可用于评估增强复合材料等各向异性或正交各向异性材料的相互作用系数，有助于表征和预测失效行为。作为示例，通过这种新机制获得的实验结果通过两种经历超弹性的橡胶类材料的现有模型进行了验证。
A new mechanism for a biaxial tension test is developed for loading an in-plane specimen simultaneously in two principal directions. This mechanism can be adapted to any uniaxial tension test machine and thereby it reduces the cost of conducting tests on expensive machines. It provides a uniform state of equibiaxial tension necessary for procedure characterizing the biaxial loading of any material system and particularly for understanding the hyperelastic behavior law of rubber-like materials for large deformations. The mechanism can also be utilized for evaluating an interaction coefficient of anisotropic or orthotropic materials like reinforced composites that can help in characterizing and predicting failure behavior. As a sample case, the experimental results obtained by this new mechanism are validated with the existing models for two rubber-like materials undergoing hyperelasticity.