Getting useful FEM and BEM vibro-acoustic solutions faster, using new solution methodologies

摘要

Meeting the challenge to increase acoustic comfort significantly whilst reducing development and productionrncosts, means reducing time-to-market and physical prototyping. This can only be achieved by extensive usernof virtual prototyping. However, predictive acoustic and vibro-acoustic models using FEM and BEMrnmethods have typically been limited in their effectiveness, partly due to the long solution times to get thernsubstantial amounts of results needed to have real usefulness in engineering design optimization.rnIn this paper, the latest speed-up technologies for acoustic solutions are presented. Approaches usingrnfinite, infinite and boundary element methods, based on modal acoustic transfer vectors, Padé methods,rndomain decomposition, iterative solvers and netsolvers are presented. These recently-developed technologiesrnmake accurate acoustic predictions timely and effective. They tackle a wide range of applications rangingrnfrom engine acoustics to interior acoustics and enable the users to design practical solutions and effectivelyrnreduce time-to-market and development costs. The fundamentals of various methods, and their practicalrnapplications, are presented.