Unified Multi-Phase Modeling and Topology Optimization for Complex Vibro-Acoustic Systems consisting of Acoustic, Elastic and Poroelastic Media

抄録

This talk introduces the UMP (Unified Multi-Phase) modeling method, recently developed for the streamlined analysis and systematic design of complex vibro-acoustic systems. The main difference between the conventional method and the UMP method is that the latter uses the same governing equations for all acoustic components while the former , different equations for different acoustic components. The UMP approach also treats all interface conditions b y a unified formulation unlike the conventional approach. Consequently, physically different components an d various interface conditions are treated b y a unified multi-phase model along with unified interface conditions. The key in this approach is the use of Biot' s equations of poroelastic media and the adjustment of poroelastic material coefficients for the representation o f any acoustic component. The unified approach becomes extremely useful w hen an iterative design process requiring interface evolutions at ever y iteration step is implemented as in the topology optimization of complex vibro-acoustic systems.