有限元素分析於飛航事故調查之應用

Application of Finite Element Analysis in Aviation Occurrence Investigation

莊禮彰(Li-Chang Chuang)；郭嘉偉(Brian C. Kuo)

事故調查 ； 有限元素分析 ； 計算流體力學 ； 破壞分析 ； Occurrence Investigation ； Finite Element Analysis ； Computational Fluid Dynamics ； Failure Analysis

航空安全及管理季刊

3卷2期（2016 / 04 / 01）

155 - 175

繁體中文

自AA 587 飛航事故發生後，有限元素分析逐漸被世界各國的事故調查機關應用在調查工作上。與傳統的風洞實驗方法相比，運用計算流體力學與有限元素分析進行航機性能分析，不但可以有效節省時間與金錢，亦可得到正確的結果。以AA587案為例，事故肇因可能為該班機起飛後於低高度遭遇二次機尾亂流後，駕駛員過度使用飛機的方向舵，使其垂直尾翼超過負載而斷裂。本研究將討論有限元素分析與計算流體力學在AA587 事故調查的角色與成果，以飛安會既有有限元素分析能量為基礎，建立飛安會航機氣動力與流固耦合分析能量，並以本會曾調查的一件航機空調組件失效的案例來呈現FEA 在航機事故調查上的應用。

Since AA587 accident in 2001, Finite Element Analysis (FEA) began to receive attention from worldwide flight occurrence investigation agencies on their tasks. Combined with Computational Fluid Dynamics (CFD), FEA efficiently saves time and costs over the traditional wind tunnel test method on aircraft performance analysis, not mentioning the reliable results that shall be obtained. AA587 occurrence, for instance, can be attributed to the aggressive use of the A300-600R rudder by pilot flying, in response to wake turbulence, before it was snapped off from the vertical tail as it excessed structural limit. This paper will survey the implements related to finite element analysis and computational fluid dynamics in AA587 investigation, and enhance ASC’s capacity in aerodynamic analysis and the fluid solid interaction. Finally, a case study would be analyzed and illustrated by finite element analysis and computational fluid dynamics.

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