Engineering Transactions, 54, 2, pp. 91-124, 2006

Exact Representation of the Derivatives of Isotropic Tensor Functions with Respect to the Deformation Gradient F

Antonio Ercolano
Università degli studi di Cassino e del Lazio Meridionale Viale dell'Università
Italy

Expressions for derivatives of isotropic tensor functions with respect to the deformation tensor F are derived. Each derivative has the first representation in terms of eigenvectors; then, for computational conveniences, also a basis-free expression, in terms of eigen projections, is reported. Further, in the same fashion, also the time derivatives are provided. In the paper, a short review of different approaches to the problem existing in literature is presented. In order to make the exposition self-contained, some backgrounds of tensor analysis are also given.
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