Print Email Facebook Twitter Effect of Steering Limit Constraints on the Performance of Variable Stiffness Laminates Title Effect of Steering Limit Constraints on the Performance of Variable Stiffness Laminates Author Peeters, D.M.J. Abdalla, M.M. Faculty Aerospace Engineering Department Aerospace Structures & Computational Mechanics Date 2015-07-19 Abstract A method to optimise the fibre angle distribution of variable stiffness laminates is proposed. The proposed method integrates a fibre angle retrieval step with a fibre angle optimisation procedure. A multi-level approximation approach is used in combination with the method of successive approximations. First, fibre angle retrieval is done by approximating the structural responses based on the optimal stiffness distribution found using lamination parameters. The full fibre angle optimisation is done by updating the approximations based on the current stacking sequence. It is shown for a bucking optimisation with a stiffness constraint that the number of finite element analyses reduces significantly by starting the optimisation from the optimal stiffness distribution rather than from a user-specified stacking sequence. Next, it is shown that updating the approximations also leads to considerable improvements over fibre angle retrieval. Similar promising results are obtained for a stress optimisation problem. Subject optimisationvariable stiffnesslamination parametersmanufacturability To reference this document use: http://resolver.tudelft.nl/uuid:1e04683e-9309-4f59-b451-4e33f95fe84b Publisher ICCM Source ICCM 20: 20th International Conference on Composite Materials, Copenhagen, Denmark, 19-24 July 2015 Part of collection Institutional Repository Document type conference paper Rights (c) 2015 The Author(s) Files PDF 321735.pdf 20.71 MB Close viewer /islandora/object/uuid:1e04683e-9309-4f59-b451-4e33f95fe84b/datastream/OBJ/view