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航天器隨機振動和噪聲試驗條件設計方法

Specifications for random vibration and acoustic tests

  • 摘要: 隨機振動和噪聲環(huán)境條件對航天器的設計與試驗驗證至關(guān)重要。文章闡述了航天器動力學環(huán)境模擬試驗的原則，重點介紹了試驗量級和試驗持續(xù)時間的確定方法及其優(yōu)缺點。確定試驗量級的方法包括極限包絡法和正態(tài)容差限法，確定試驗持續(xù)時間的方法包括逆冪律、疲勞損傷和首次穿越方法。

     

    Abstract: The random vibration and acoustic environment is important aspect in the design and test of spacecraft. This paper discusses the principle of spacecraft dynamic tests, and the methods for determining the test level and the duration, as well as their advantages and disadvantages. The test level can be identified by the envelope limit or the normal tolerance limit, while the test duration can be determined from the inverse power law, the fatigue damage or the first passage model.

     

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