Erik Kostson
Ansys Employee

As we said the JCA and Delany-Bazley are acoustic models that (predict the sound absorption due to thermal viscous effects (the skeleton is rigid) - see theory manual for more info.

An elastic structure in ansys cannot account for any acoustic absorption so that can not be accounted for in wb mechanical. An elastic body in acoustics is e.g., useful for doing vibroacoustics so say a vibrating elastic steel structure might generate sound in the surrounding acoustic air domain say, but again it can not be used to absorb any sound/acoustic energy (it can not model that effect).

All the best