Title: MULTI-SCALE MODELLING OF LONG-TERM MECHANICAL BEHAVIOUR IN POLYMER COMPOSITE LAMINATES WITH WOVEN FIBRE ARCHITECTURE
Page Range: p.297-318
Author(s): Gupta V; Roy S; Dharani L R
File size: 2218K
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 9
Issue No: No. 5
Abstract
An analytical model for predicting the long-term durability of polymer composite laminates with woven fibre architecture is presented, which takes a micromechanics approach towards modelling the out-of-plane viscoelastic behaviour of the laminate. A five-harness satin woven fibre cross-ply composite laminate is investigated, taking into consideration of the weave architecture and time-dependent effects. The classical lamination theory model is adapted to include the in-plane elastic behaviour of woven fibre composites. For the matrix-dominated out-of-plane response, a viscoelastic creep model is employed to model the resin. In addition, physical ageing of the matrix is included in the model, using the effective time theory proposed by Struik. The effect of large deflections and rotations on the time dependent out-of-plane behaviour is also investigated using the micromechanics model. The homogenised in-plane and out-of-plane compliance obtained using the proposed micromechanics methodology could be applied within the framework of a structural finite element code to model the macro-scale long-term behaviour of a woven fabric composite structure, it is maintained. 26 refs.
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