An Indirect Boundary Element Technique for Exterior Periodic Acoustic Analysis

Paper #:
  • 971947

Published:
  • 1997-05-20
Citation:
Raveendra, S., Gardner, B., and Stark, R., "An Indirect Boundary Element Technique for Exterior Periodic Acoustic Analysis," SAE Technical Paper 971947, 1997, https://doi.org/10.4271/971947.
Pages:
6
Abstract:
The boundary element solution procedure for exterior periodic acoustic problems fails at frequencies associated with the eigenfrequencies of the corresponding interior problems. A new technique is developed to overcome this problem in the indirect boundary element method by expanding the integral equations through the application of multi-valued impedance boundary conditions. The effectiveness of this newly developed UNequal Impedance technique for Qualitative Evaluation of acoustic response (UNIQUE) is demonstrated by applying this procedure for the solution a series of exterior acoustic problems.
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