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arXiv 1301.1889math-phmath.MPphysics.class-ph
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偶数阶张量的对称类

Symmetry classes for even-order tensors

M. Olive, N. Auffray

摘要:

本文的目的是对连续介质力学中经常出现的偶数阶张量空间的对称类的个数和类型的确定问题给出一个完整而一般的答案。这种研究是从弹性张量空间开始的。从那时起,不同的作者解决了这个问题的其他种类的物理,如光电,压电,挠曲电,应变梯度弹性。所有上述问题都用同样的计算方法处理。虽然这种方法是有效的,但其缺点是不能提供一般的结果。而且,它的复杂性随着张量的顺序而增加。在目前的贡献,我们提供的一般定理,直接给寻求任何偶数阶本构张量的结果。作为该方法的一个例证,首次给出了Mindlin第二应变梯度弹性力学所有偶数阶张量的对称类。

英文摘要:

The purpose of this article is to give a complete and general answer to the recurrent problem in continuum mechanics of the determination of the number and the type of symmetry classes of an even-order tensor space. This kind of investigation was initiated for the space of elasticity tensors. Since then, different authors solved this problem for other kinds of physics such as photoelectricity, piezoelectricity, flexoelectricity, and strain-gradient elasticity. All the aforementioned problems were treated by the same computational method. Although being effective, this method suffers the drawback not to provide general results. And, furthermore, its complexity increases with the tensorial order. In the present contribution, we provide general theorems that directly give the sought results for any even-order constitutive tensor. As an illustration of this method, and for the first time, the symmetry classes of all even-order tensors of Mindlin second strain-gradient elasticity are provided.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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