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Digital image correlation used to analyze the multiaxial behavior of rubber-like materials

机译:数字图像关联用于分析类橡胶材料的多轴行为

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摘要

We present an experimental approach to discriminate models describing the mechanical behavior of polymeric materials. A biaxial loading condition is obtained in a multiaxial testing machine. An evaluation of the displacement field obtained by digital image correlation allows us to evaluate the heterogeneous strain field observed during these tests. We focus on the particular case of hyper-elastic models to simulate the behavior of a rubber- like material. Different expressions of hyper-elastic potential are used to model experiments under uniaxial and biaxial loading conditions.
机译:我们提出了一种实验方法来区分描述聚合物材料力学行为的模型。在多轴测试机中获得双轴加载条件。通过数字图像相关获得的位移场的评估使我们能够评估在这些测试过程中观察到的异质应变场。我们关注于超弹性模型的特殊情况,以模拟类似橡胶的材料的行为。超弹性势的不同表达用于在单轴和双轴载荷条件下模拟实验。

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