first passage failure 中文意思是什麼
first passage failure
解釋
初期通道破壞-
In this paper, probability concepts are applied to establish the probabilistic analysis method on dynamic stability of high - speed railway cwr. dynamic stability and its reliability of high - speed railway cwr are analyzed on the base of first - passage failure criterion. this paper aims to give out design reliability index and the safe allowable temperature limits under design reliability index for high - speed railway cwr dynamic stability in china
本文運用概率統計理論，提出無縫線路動力穩定性的概率分析方法，基於首次超越失效準則分析了無縫線路動力穩定性和及其可靠度，提出我國高速鐵路無縫線路穩定性的目標可靠指標建議值，確定了滿足預期目標可靠度的允許溫升標準。 -
Suggestion the design reliability index of high - speed railway cwr dynamic stability to be settled 4. 2 by quoting a renewal process model and first - passage failure criterion, the analysis method of cwr dynamic stability in design reference period is proposed. the reliability of high - speed railway cwr dynamic stability is analyzed. its result is compared with quasi - static analysis method and random simulation analysis method
基於反應更新過程模型和隨機過程跨越理論，提出了無縫線路穩定性動力可靠度的分析方法，分析了高速鐵路無縫線路穩定性動力可靠度，並與隨機模擬法、擬靜力法的計算結果進行了對比分析。 -
The main work and achievements are summarized as follows : according to the spectrum analysis theory, the simple formula of the power spectrum between the excitation and the response is obtained. then the time - domain statistical properties of the structural response are acquired through fourier inverse transform, and cauchy ' s residue theorem is applied to solving the integral of fourier inverse transform, the structural dynamic reliability is calculated in terms of possion hypothesis based on first passage failure
主要研究內容如下：從譜分析理論出發，得到了激勵與響應功率譜之間的簡明關系式，由fourier逆變換得到響應的時域特徵，利用cauchy留數理論處理fourier逆變換的積分式，基於首超破壞的possion假設計算結構系統的動力可靠性，並在此基礎上進行結構優化設計，奠定了確定性模型的基礎。
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