Skip to main content
Log in

Characterization of Convex Isotropic Functions

  • Published:
Journal of Elasticity Aims and scope Submit manuscript

Abstract

Necessary and sufficient conditions are given for the convexity of a scalar valued function of tensors that is proper isotropic, or invariant under rotations. These conditions are also appropriate for functions defined only for orientation preserving tensors. They are weaker than Ball's convexity conditions for fully isotropic functions (invariant under all orthogonal tensors) [B1]. The results are applied in obtaining polyconvexity conditions for the stored energy function.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Subscribe and save

Springer+ Basic
$34.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or eBook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

Explore related subjects

Discover the latest articles, news and stories from top researchers in related subjects.

References

  1. J.M. Ball, Convexity conditions and existence theorems in nonlinear elasticity. Arch. Rat. Mech. Anal. 63 (1977) 337–403.

    Article  MATH  Google Scholar 

  2. J.M. Ball, Differentiability properties of symmetric and isotropic functions. Duke Math. J. 51 (1984) 699–728.

    Article  MATH  MathSciNet  Google Scholar 

  3. H. Busemann, G. Ewald and G.C., Sheppard, Convex bodies and convexity on Grassmann cones. Parts I–IV, Math. Ann. 151 (1963) 1–41.

    Article  MATH  MathSciNet  Google Scholar 

  4. P.G. Ciarlet, Mathematical Elasticity, Vol. I, North-Holland, Amsterdam (1988).

    MATH  Google Scholar 

  5. B.D. Coleman and W. Noll, On the thermostatics of continuous media. Arch. Rat. Mech. Anal. 4 (1959) 97–128.

    Article  MATH  MathSciNet  Google Scholar 

  6. B. Dacorogna, Direct Methods in the Calculus of Variations, Springer-Verlag, Berlin (1990).

    MATH  Google Scholar 

  7. P. Rosakis and H.C. Simpson, On the relation between polyconvexity and rank-one convexity in nonlinear elasticity. J. Elasticity 37 (1995) 113–137.

    Article  MATH  MathSciNet  Google Scholar 

  8. J. von Neumann, Some matrix-inequalities and metrization of matrix-space, Tomsk Univ. Rev., 1 (1937) 286–300.

    MATH  Google Scholar 

  9. M. Šilhavý, Convexity conditions for rotationally invariant functions in two dimensions. preprint.

  10. M. Šilhavý, The Mechanics and Thermodynamics of Continuous Media, Springer, Berlin (1997).

    MATH  Google Scholar 

  11. J.E. Dunn and R. Fosdick, The Weierstrass condition for a special class of elastic materials. J. Elasticity 34 (1994) 167–184.

    MATH  MathSciNet  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Rosakis, P. Characterization of Convex Isotropic Functions. Journal of Elasticity 49, 257–267 (1997). https://doi.org/10.1023/A:1007468902439

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1023/A:1007468902439

Navigation