Design optimisation of a semi-solid type using response surface approximations

摘要

A general approach for the construction of global approximations to structural behaviour using response surface methodology is presented. The computation and use of these approximations are demonstrated using a semi-solid type example. The use of these global approximations to the responses made it viable to utilize the capabilities of non-linear analysis software in design optimisation. The insight gained from a preliminary low fidelity model was utilized in a two-stage approach to achieve the maximum benefit from a more expensive high fidelity model. The resulting high-accuracy approximations greatly reduced the cost of subsequent design calculations such as multidisciplinary and discrete optimisation.