An efficient methodology to carry out multi-objective optimization of non-linear structural systems under stochastic excitation is presented. Specifically, an efficient determination of particular non-inferior solutions is implemented. The compromise designs are obtained by a sequential approximate optimization scheme. The response of the structural system is characterized in terms of the first two statistical moments of the response process, i.e. the mean and variance. An efficient sensitivity analysis of non-inferior solutions with respect to the design variables becomes possible with the proposed formulation. Such information is then used for decision making and tradeoff analysis. Numerical results show that the total number of stochastic analyses required during the multi-objective optimization process is in general very small. Hence, different compromise solutions including the design that best represents the outcome that the designer considers potentially satisfactory are obtained in an efficient manner.
|Publication status||Published - 1 Jan 2008|
|Event||conference - |
Duration: 1 Jan 2008 → …
|Period||1/01/08 → …|
Jensen, H. A. (2008). 7th European Conference on Structural Dynamics, EURODYN 2008. Paper presented at conference, . https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84959929125&origin=inward