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Evaluation of Equivalent Radiated Power with LS-DYNA

This paper provides a review of the development of LS-DYNA in ERP evaluation. ERP (Equivalent Radiated Power) is a reduced calculation estimating the acoustic behavior of vibrating structures, without adding surrounding fluid. It is based on the underlying assumptions of plane waves and perfect radiation. The results are saved in binary plot database --- d3erp, which is accessible to LS-PrePost 4.3. ERP is useful for quick characterization of acoustic behavior of structures, as well as the acoustic panel contribution analysis. Some examples are included in this paper to demonstrate how to run ERP with LS-DYNA, and how to interpret the results with LS-PrePost.