549 音場系との連成を考慮したフィルエフェクト発生時の宇宙機構造振動に関する研究(動力学問題の最適設計とその周辺技術と応用,OS-14 動力学問題の最適設計・制御とその周辺技術と応用,総合テーマ「伝統を,未来へ!」)

概要

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Payloads are exposed to severe vibro-acoustic environments during a rocket launch. At the same time, fill effect happens in narrow room between rocket faring and spacecraft panels. It makes sound pressure level (SPL) increased approximately 10 dB and makes eigen value of spacecraft panel shifted to coupling mode one. The authors analyze the correlation between fill effect and the eigen value shift with using structure and acoustic coupling model. By considering safety design, they show that the modal-interaction model is going to predict much quantity of eigen value shift than existing model one.
一般社団法人日本機械学会の論文
2010-09-14