- 作者: 陳紹東
- 作者服務機構: 國立臺灣大學機械工程學系
- 中文摘要: 非恆持隨機激動狀況下之線型系統,其平均平方反應值,每為分析設計者所探求。茲按算式演算,說明其可藉即時(或有限時閒)轉換函數表示之。復為多種力學系統(單自由度及各種雙自由度)於單步調幅白噪音激動狀況下,導獲提供其即時平均平方位移反應式,並從而計算畫作反應圖表,俾便於不一自然頻率之各系統應用。又經比較,顯示無新近發現BARNOSKI-MAURER二氏「超越」現象存在。
- 英文摘要: Mean square responses of linear systems to nonstationary random exci-tations are expressed as "mathematical structures" in terms of instantaneoustransfer functions. Various expressions of nonstationary mean square dis-placement responses of linear single-degree-of-freedom and two-degree-of-freedom mechanical systems under white noise excitations modulated withunit step functions are provided. Nonstationary displacement responsecharts applicable to wide range values of natural frequencies of systems aremade, and no Barnoski-Maurer's "exceedance" occurances are shown exist-ing.
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