A simple derivation of necessary and suf
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Penny J. Davies
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Article
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1991
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Springer Netherlands
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English
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Necessary and sufficient conditions for the strong ellipticity of isotropic hyperelastic materials were first given by Knowles and Sternberg [3,4] by means of a lengthy calculation. Since then Aubert and Tahraoui [1] have shown the necessity of these conditions and simplified one of them using a dif