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題 名 | 系統損傷累積與可靠度關係的探討=The Relationship Study between Dynamic Reliability and Damage Cumulation |
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作 者 | 王國雄; 許芳勳; 張豪麟; | 書刊名 | 力學 |
卷 期 | 16:2 2000.12[民89.12] |
頁 次 | 頁131-139 |
分類號 | 446.1 |
關鍵詞 | 動態可靠度; 失效率函數; 損傷累積過程; Dynamic reliability; Hazard function; Damage cumulative process; |
語 文 | 中文(Chinese) |
中文摘要 | 系統的失效乃基於主觀的定義性能指標(通常可透過物理機制推算應力之需求閾 值)及客觀強度的退化造成。調整不同閾值可得到不同退化的可靠度行為。強度退化則透過 系統初始缺陷(失效的誘因)和受到外力及環境條件交互作用所產生退化的現象。本文依此 觀念提出失效率函數 h 與可靠度 R 的關係為 e+c(1-R) �c,式中 e 代表初始缺陷, 乃涉 及系統的架構、材料的選用以及相關製造技術等行為的綜合缺失。n 代表退化(或稱記憶) 特徵,c 為退化強度。文中以三個文獻記載的實例驗證,並以玻璃纖維斷裂過程的數值蒙地 卡羅模擬該材料的動態可靠度。相關檢驗顯示所提出 h 的函數關係頗具採用價值。 |
英文摘要 | This System failures occur through either threshold consideration or degradation phenomenon. The former concerns with an expected situation due to applying load or obvious system strength defects. The latter comes from the strength loading history that draws the strength degradation. In this paper, we focus on the discussion of latter situation. By assuming the hazard function h to be a form e + c (1-R) �c where, e represents the initial weakness of the system when it just established, n the memory characteristics of the system cumulative damage in the process and c the degradation strength. Several examples from known references are examined. Monte Carlo simulation of the fibber glass fractures is also taken to study its dynamic reliability. It is found that the proposed relation of h is quite well acceptable. |
本系統中英文摘要資訊取自各篇刊載內容。