Analysis of Thermally Induced Multistable Composites

F Mattioni, PM Weaver, KD Potter & MI Friswell (University of Bristol)

International Journal of Solids and Structures, Vol. 45, No. 2, January 2008, pp. 657-675

Abstract

This paper models the nonlinear flexural response of laminates that have piecewise variation of lay-up in the planform, using finite element analysis. Attention is focused on the effects that thermal stresses have on the potential multiple shapes of a composite structure. Unsymmetric laminates may possess more than a single equilibrium configuration, and during the cool-down the solution thus bifurcates at a critical temperature. In static analyses, numerical solutions are often coaxed to converge into one or the other branch of the solution. A methodology to overcome this problem is presented. Such modelling is necessary to allow application of multistable composite within morphing aircraft structures as multistable composites could provide a viable solution for the realisation of shape-adaptable structures.

Paper Availability

This material has been published in the International Journal of Solids and Structures, Vol. 45, No. 2, January 2008, pp. 657-675, the only definitive repository of the content that has been certified and accepted after peer review. Copyright and all rights therein are retained by the Elsevier.


Link to paper using doi:10.1016/j.ijsolstr.2007.08.031

International Journal of Solids and Structures on ScienceDirect

ScienceDirect