Abstract
Substructuring has been a classical technique in structural FEM analysis to reduce the matrix size and the computation time. In this paper, a substructuring technique based on the impedance matrix synthesis is used along with the recently developed direct mixed-body BEM to evaluate the transmission loss (TL) of packed silencers. Due to the single-domain nature of the direct mixed-body BEM, each substructure does not need to be a homogeneous domain. Complex internal components such as extended inlet/outlet tubes, perforated tubes, and thin baffles, as well as bulk-reacting linings, can all be in one single substructure. As such, dividing a large silencer into modular substructures can be done naturally in the longitudinal direction. The substructuring technique presented in this paper also has the capability of modeling a catalytic converter in which a catalytic monolith containing a stack of capillary tubes is inserted between two connecting substructures. A parallel-baffle silencer is presented to demonstrate the technique.
| Original language | English |
|---|---|
| Pages (from-to) | 253-262 |
| Number of pages | 10 |
| Journal | International Series on Advances in Boundary Elements |
| Volume | 18 |
| State | Published - 2003 |
| Event | Twenty-Fifth International Conference on the Boundary Element Method, BEM XXV - Split, Croatia Duration: Sep 8 2003 → Sep 10 2003 |
ASJC Scopus subject areas
- General Engineering