Using multicriterion optimization for strength design of composite laminates

Using MATLAB to Design and Analyse Composite Lami-nates

“…where N is the vector of resultant forces; M is the vector of resultant moments; ε 0 is the vector of the mid-plane strains; κ is the vector of mid-plane curvatures. Vectors ε and κ are related to the global co-ordinates by Equation (8).…”

“…As a result composite structures are usually overdesigned as incorrect fibre angles may mean more fibre layers which in turn leads to increased material costs. Many researchers [6][7][8][9] have attempted to reduce material costs by reducing the laminate thickness but these were based on fixed fibre angles. Certain regions of a composite structure, such as holes and other high stress zones, may need more reinforcement than others.…”

Validation of the thin-walled composite box beams using FEM

“…Most of these works were restricted to the plate type structures [7][8][9][10][11][12] because of the mathematical complexity involved in the analysis of other composite structures. However, in recent year, the commercially available finite element software makes it possible to optimize the complicated composite structures [13][14][15]. For example, Kere et al [15] carried out the weight minimization of composite laminates by maximizing the strength for multiple loading conditions with number of layers and layer orientations as design variables.…”

“…However, in recent year, the commercially available finite element software makes it possible to optimize the complicated composite structures [13][14][15]. For example, Kere et al [15] carried out the weight minimization of composite laminates by maximizing the strength for multiple loading conditions with number of layers and layer orientations as design variables. They considered an elastic composite beam with Z cross-section and used FE model to find the stresses.…”

Incorporating industrial constraints for multiobjective optimization of composite laminates using a GA

“…This kind of problems can be handled by a multicriteria approach, leading to designs which are balanced from an overall viewpoint. There exist two approaches: we can use either a direct method [7][8][9][10] or a posteriori method based on evolutionary strategies [11,20]. Multicriteria optimization of composite structures has been discussed widely in the literature by various researchers, Adali et al [6] presented multicriteria optimisation of laminated plates for maximum pre-buckling, buckling and post-buckling strength, Kere et al [9] reported on multicriteria optimization a Corresponding author: hbassir@univ-fcomte.fr for strength design of composite laminates, while Adali et al [10] used the multicriteria approach to design laminated cylindrical shells for maximum pressure and buckling load.…”