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首页> 外文期刊>Zeitschrift fur Angewandte Mathematik und Mechanik >ON THE TENSOR FUNCTION REPRESENTATIONS OF 2ND-ORDER AND 4TH-ORDER TENSORS .1.
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ON THE TENSOR FUNCTION REPRESENTATIONS OF 2ND-ORDER AND 4TH-ORDER TENSORS .1.

机译:关于二阶和四阶张量器的张量函数表示.. 1。

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In this paper, we establish the complete representations for isotropic scalar-, 2nd-order tensor- and 4th order tensor-valued functions of any finite number of 2nd- and 4th-order tensors in both 2- and 3-dimensional spaces, and prove the irreducibility of these representations. The fourth-order tensors under consideration are those regarded as skew-symmetric linear transformations of both symmetric and skew-symmetric 2nd-order tensors in 3-dimensional space, symmetric linear transformations of skew-symmetric 2nd-order tensors in 3-dimensional space, and both symmetric and skew-symmetric linear transformations of both symmetric and skew-symmetric 2nd-order tensors in 2-dimensional space. Complete and irreducible isotropic tensor function representations in 3-dimensional space involving 4th-order tensors as symmetric linear transformations of symmetric 2nd-order tensors are derived in a continued paper (part II). These representations allow general forms of constitutive laws involving 4th-order tensor agencies (damage tensors, internal variables) of isotropic materials to be developed. [References: 31]
机译:在本文中,我们建立了二维和三维空间中任意数量的二阶和四阶张量的各向同性标量,二阶张量和四阶张量值函数的完整表示,并证明这些表示的不可约性。正在考虑的四阶张量是那些在3维空间中对称和偏对称的二阶张量的偏对称线性变换,在3维空间中偏对称的二阶张量的对称线性变换,以及二维空间中对称和倾斜对称的二阶张量的对称和倾斜对称线性变换。在续篇(第二部分)中,得出了在三维空间中涉及四阶张量的完整且不可约的各向同性张量函数表示形式,这是对称的二阶张量的对称线性变换。这些表示允许制定涉及各向同性材料的四阶张量机构(损伤张量,内部变量)的本构法的一般形式。 [参考:31]

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