539 自動車用制振ビードパネル構造におけるFEMによるSEAパラメータの同定(自動車・鉄道車両の制震,OS-3 ダンピング,総合テーマ「伝統を,未来へ!」)

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This report is about proposal of identification method for SEA (Statistical Energy Analysis) parameters using FEM considered coupling in damping. Usually, damping is influenced by shape of panels and forms of the connection. Therefore, we propose a new identification of SEA parameters (internal loss factors) using FEM considered in damping. We verified using the model, which considered two panels connected in L-shape with viscoelastic damping layers. In this model, an automotive bead panel and a flat panel are connected. As a result, we could identify SEA parameters in high precision. And the proposed SEA enables us to improve not only precision in high frequency but also precision in low frequency.
2010-09-14