Identifying an appropriate method for modelling automotive dissipative silencers normally
requires one to choose between analytic and numerical methods. It is common in the …

In this work, a finite element approach is presented for modeling sound propagation in
perforated dissipative mufflers with non-homogeneous properties. The spatial variations of …

The noise behavior of the blower used on fuel cell vehicles is measured and analyzed.
According to the noise behaviors, the multi-chamber micro-perforated muffler with adjustable …

This article presents a topology optimization (TO) method developed for maximizing the
acoustic attenuation of a perforated dissipative muffler in the targeted frequency range by …

A mode matching method for predicting the transmission loss of a cylindrical shaped
dissipative silencer partially filled with a poroelastic foam is developed. The model takes into …

The substructure boundary element approach is developed to predict and analyze the
acoustic attenuation characteristics of hybrid expansion chamber silencers with perforated …

Dissipative splitter silencers are often used to reduce the noise emitted in ventilation and
gas turbine systems. It is well known that the acoustic performance of a splitter silencer …

A mixed finite element model has been derived for the acoustic analysis of perforated
dissipative silencers including several effects simultaneously:(1) High temperature and …

The acoustic performance of a silencer containing elastic membranes backed by cavities
and porous material is investigated. The modeled waveguide configuration contains porous …

For multi-chamber silencers with non-uniform cross-sections at axial direction, the coupling
method based on subdomain division technique is proposed. The silencer is divided into …