風鳥科 的英文怎麼說
中文拼音 [fēngniǎokē]
風鳥科
英文
bird of paradise-
This research work on bird striking has a long history and already got plentiful achievemellts in theories and experiments, howevef, still a long way no doubt waits to go for sophisticated research work on it more detailed to apply to airframe engineering quantitatively in combination wth the technical reformation of the birdstrike experimelltal system in our laboratory, this thesis deeply studies and analyses the numerica1 computation and simulation methods to birdstrike dynamic response problem based on finite - elemefit - method ( fem ) numerical emulation and modem large - scale scientfic computation software
本文結合我公司鳥撞實驗體系技術改造項目，應用有限元數值計算模擬技術及現代大型科學計算工具，對鳥體撞擊飛機風擋結構的動力學響應問題進行了系統學習與研究探討，初步掌握了科學計算方法，獲得了計算模擬的實踐經驗，為今後深入應用大型科學計算手段進行撞擊類科學問題的研究以及深入應用於工程實踐奠定了強有力的工作基礎。The scielltific computational theories and methods on bird strike to the windshield of aircraft have been systematically studied and summed up in this thesis, such as fem comptltational principles and procedures to elastic dynamic problems under the conditions of small and non - linear finite deformation, 3d viscous elastic constitutive theory and incremelltal expression under the consideration of the rate effect of non - metallic materials like the aircraft windshield, and the numerical compatational principles and key constitutions for impact - contact dynamic subjects
2 、系統學習並歸納總結了鳥體撞擊風擋結構問題中的科學計算理論與計算方法。按照鳥撞問題數值計算方法逐步深入的思路，系統總結了小變形結構動力學有限元數值計算方法、有限變形的幾何非線性有限元數值計算方法、粘彈性體非線性形變的本構物理關系；對于實施復雜結構有限元動力學計算的載荷增量方法提出了對newmark差分的改進以及進行材料與幾何非線性數值計算的細致步驟。There is a big horsetail windbreak forest beside the wetland protection area where we can see magpies and ardeidae. we can occasionally see grey frog hawks and other migratory birds stay here during autumn
在濕地保護區旁可見一大片木麻黃防風林，在這里可見到喜鵲及鷺科鳥類，秋天過境時期偶爾會有赤腹鷹等遷移性鳥類暫棲。3. wth application of large - scale computational software anasys - dyna, the case of elastic impact to each other of two recta - ngular cross - section rods has been implemented and also compared with theoretical results, which maks good agreement and draws very helpful practical experiences to use some techncal parameters in the program. eventually, the a real - world aircraft windshield shell structure impacted by a flying bird has been simulated through fem numerical computation, and meanime, an engineering predical experimeni of bird sttiking to the windshield in some type of aircraft has been performed
3 、應用大型科學計算程序anasys - dyna ，對彈性體碰撞進行了數值計算驗證並與理論結果對比，獲得了計算參數應用的實踐經驗；在此基礎上，進行了鳥體撞擊飛機風擋結構動力學響應的實際數值計算，與此同時安排了工程鳥體撞擊試驗，並就兩者計算結果給予了細致分析對比，獲得了良好的一致性結論。We suggest that these five families should be focused on, in future monitoring programs for risk assessment of invasive species
我們建議在未?的監測計畫中應針對這五科較具入侵潛?的鳥科做進一步入侵鳥種的風險評估。分享友人