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Material Symmetry of Elastic Shells

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Abstract

The notion of material symmetry has been formalised by W. Noll and Truesdell’s school of continuum mechanics, and is now explained in many classical textbooks. Mostly, attention has been confined to simple materials. Applying the notion to shells requires to consider second-grade continua and is more concealed. Attempts have been done among others by Murdoch and Cohen, Steigmann and Ogden, Steigmann. Here I present an independent approach for hyper-elastic shells with second-gradient elasticity. The equation that characterizes the material symmetries is deduced and, by way of illustration, the case of a shell with unstressed reference configuration is discussed.

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Notes

  1. We stipulate that all the bases introduced hereafter are right-handed bases.

  2. To simplify notation we write \(\vartheta \) for the pairs \((\vartheta ^{1},\vartheta ^{2})\) in the sequel. Furthermore, we assume that \(\mathfrak{h}\) is differentiable as much as needed, so that \(\vartheta '(\vartheta )\) is also so.

  3. Or better, turns out to be.

  4. Recall that \(\nabla \mathfrak{h}\) is a two-by-two tensor, so both signs are compatible with \(\text{(6.2)}_{1}\).

References

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Acknowledgement

I wish to thank David Steigmann for kind discussions.

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  1. Via Parenzo 17, 33100, Udine, Italy

    Cesare Davini

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  1. Cesare Davini
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Correspondence to Cesare Davini.

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Davini, C. Material Symmetry of Elastic Shells. J Elast 138, 77–91 (2020). https://doi.org/10.1007/s10659-019-09726-y

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  • DOI: https://doi.org/10.1007/s10659-019-09726-y

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