MULTIDISCIPLINARY ANALYSIS AND DESIGN OPTIMISATION

Objectives In order to satisfy the industry needs of reducing development costs and time to market, the new trends within the design process are driven by the integration between disciplines and by using automated design procedures. Applications Multidisciplinary analysis are mainly characterised by the design of accurate interfaces between disciplines. It has to be remind that the accuracy of the algorithms used in separate disciplines can not be preserved in the overall simulation process without taking care of the development of accurate coupling procedures. A classical example of multidisciplinary application is the study of fluid-structure interactions. In this case, the interaction between disciplines can be summarised as follows: the loads provided by the fluid are transferred to the structure which in turn transfers displacements and displacements velocities to the fluid. Then, not only the forces have to be preserved through the coupling procedure but above all the energy. In the case these properties are not satisfied, instabilities in the simulation can appear without being supported by any physical meaning. Both for static and dynami