Volume 28, Number 9, 1249-1257, DOI: 10.1007/s10483-007-0913-y

Basis-free expressions for derivatives of a subclass of nonsymmetric isotropic tensor functions

Zhi-qiao Wang and Guan-suo Dui

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Abstract

The present paper generalizes the method for solving the derivatives of symmetric isotropic tensor-valued functions proposed by Dui and Chen (2004) to a subclass of nonsymmetric tensor functions satisfying the commutative condition. This subclass of tensor functions is more general than those investigated by the existing methods. In the case of three distinct eigenvalues, the commutativity makes it possible to introduce two scalar functions, which will be used to construct the general nonsymmetric tensor functions and their derivatives. In the cases of repeated eigenvalues, the results are acquired by taking limits.

Key words  nonsymmetric tensor - derivative of tensor function - scalar function - fourth-order tensor

Chinese Library Classification  O331 - O183.2

2000 Mathematics Subject Classification  74A20 - 74C15


Communicated by HUANG Zhu-ping


Project supported by the National Natural Science Foundation of China (No. 50539030)

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