An efficient multi-time-step implicit-explicit method to analyze solid-fluid coupled systems discretized by unconditionally stable time-domain finite element procedures

摘要: The numerical modelling of interacting elastodynamic solids and acoustic fluids by time-domain finite element procedures is discussed here. In this study, the global model divided into solid fluid sub-domains each sub-domain analyzed independently, as an uncoupled model. interaction between different accomplished interface forces. order to improve efficiency, accuracy flexibility methodology, a multi-time-step method also considered, allowing optimal time-steps be selected for At end paper, applications illustrate performance potentialities proposed techniques.