Minimum Principle of Complementary Energy for Nonlinear Elastic Cable Networks with Geometrical Nonlinearities

Y. Kanno and M. Ohsaki
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Y. Kanno: Kyoto University
M. Ohsaki: Kyoto University

Journal of Optimization Theory and Applications, 2005, vol. 126, issue 3, No 7, 617-641

Abstract: Abstract A minimum principle of complementary energy is established for cable networks involving only the stress components as variables with geometrical nonlinearities and nonlinear elastic materials. The minimization problem of total potential energy is reformulated as a variational problem with a convex objective functional and an infinite number of second-order cone constraints; its Fenchel dual problem is shown to coincide with the minimization problem of the complementary energy. It is of interest to note that the obtained complementary energy attains always its minimum value at the equilibrium state irrespective of the stability of the cable networks, contrary to the fact that only stationary principles have been presented for elastic trusses and continua, even in the case of a stable equilibrium state.

Keywords: Variational principles; Fenchel duality; minimum principle of complementary energy; cable networks (search for similar items in EconPapers)
Date: 2005
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DOI: 10.1007/s10957-005-5500-x

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