STRUCTURAL OPTIMISATION OF A COMPOSITE AIRCRAFT FRAME FOR A CHARACTERISTIC RESPONSE CURVE
2016
In this paper an heuristic optimisation technique for a characteristic response curve of CFRP z-frames
used in aerospace applications is investigated. Therein, the focus is to identify a dynamic response being
most suitable to map onto a specified reference curve. For that purpose a parametric finite element
model was established. Discrete laminate stacks and continuous geometry parameters were used as
design variables for structural optimisation. In order to solve the nonlinear unconstrained optimisation
task, a mixed-integer distributed ant colony algorithm was selected and applied. Within the solution
space, a structural layout of the z-frame was identified from a set of pareto optimal solutions being the
best solution with respect to the optimisation objectives. Ultimately, the best solution of the response
curve approach is compared to the solution of a response value approach.
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