撞擊應力 的英文怎麼說

中文拼音 [zhuàngyīng]
撞擊應力 英文
bump stress
  • : 動詞1 (猛然碰上) collide; strike; knock; bump against; run into 2 (碰見) bump into; run into;...
  • : 應動詞1 (回答) answer; respond to; echo 2 (滿足要求) comply with; grant 3 (順應; 適應) suit...
  • : Ⅰ名1 (力量; 能力) power; strength; ability; capacity 2 [物理學] (改變物體運動狀態的作用) forc...
  • 撞擊 : 1 (撞) impact; ram; dash against; strike; knock; hit against 2 [工業] liquid knockout; percussi...
  1. 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

    本文結合我公司鳥實驗體系技術改造項目,用有限元數值計算模擬技術及現代大型科學計算工具,對鳥體飛機風擋結構的動學響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,為今後深入用大型科學計算手段進行類科學問題的研究以及深入用於工程實踐奠定了強有的工作基礎。
  2. Roll over protective structure ( rops ) is a device which installs on out of construction vehicle. the main functions are : when the vehicle rolling over. rops can prevent the vehicle from rolling over further, and reduce the possibility of rolling vehicle injures operator ; when the vehicle traveling on freezing soil. concrete and rock, it has large resist continuous impact ability ; when the vehicle overturning rops can support the whole vehicle. arrangement of falling object protective structure ( fops ) can block objects ( such as trees, rocks ) so that supply protection for operator. this problem is that research rolling over and falling objects protective structure of bulldozer by learning research condition of rops / fops and relative lay down international standard. on the base of theory analysis. detrudes counting formula of rops / fops deformation through founding mechanics analysis model of rops / fops at the stage of elasticity and plastoelastic. and finds a set of feasible nonlinear finite element analysis counting. lt calculates rops / fops plastoelastic deforma variable of 320hp bulldozer, bulldozer has been carried out by optimizing design method

    其主要功能是:當車輛滾翻時, rops能刺入未凍土壤而阻止車輛的進一步滾翻,降低滾翻的車輛對系著安全帶司機軋傷的可能性;保證rops在碰和沖變形不大的地面(如凍土、混疑土上、巖石)時,能具有相當大的抗連續沖;當車輛已經處于顛覆狀態時,已經變形的rops能支撐住整車。落物保護裝置(簡稱fops ) ,其構件的布置方式要能遮蔽墜落的物體(如,樹木、巖石等) ,以便對司機提供適當的保護。本課題主要通過了解國內外有關對rops fops的研究情況和有關國際標準的制定,對大型推土機傾翻和落物保護裝置進行研究,在理論分析的基礎上,通過建立rops fops的學分析模型,推導彈性、彈塑性階段rops fops變形的計算公式,建立一套可行的rops fops的非線性有限元分析計算方法。
  3. Intermittence analysis of pressure fluctuation signal in scisr

    流反器內壓波動信號的間歇性分析
  4. Based on the revers kinetic intermediate energy heavy ion collision in which much more intermediate mass fragments are emitted towards forward angles, a sensitive observable on isospin effects in heavy ion collisions is investigated by means of using isospin dependent quantum molecular dynamics ( iqmd )

    摘要在重離子碰過程中,基於重質量的彈核轟輕質量靶核有大量中等質量碎片向前發射的逆運動學效,利用同位旋相關的量子分子動學觀察和研究了重離子碰過程中同位旋效的靈敏性。
  5. At first in the condition of low - velocity impact it is discussed with the formation of ceramic smash cone angle on the base of quasi - statistic hertz and 3 a 6 y a c - theory. then using spherical stress wave reflection and transmission theory under the state of medium - high velocity the formation of spot in the ceramic back. finally the damage mechanism of ceramic suffered by the high impact is simply discussed

    首先,在低速的條件下,基於準靜態hertz的理論與薩布斯基理論,分析了陶瓷破碎錐角的形成;其次,在中高速條件下,利用球面波反射迭加理論,分析了陶瓷背面的層裂的形成;最後,簡單討論了高速下陶瓷的破碎機理。
  6. The dynamic data of displacement, strain and impetus force acquired from the experimental collection system are also well analyzed for measuring precision and errors. based on the underlying work and experimental features, the thesis proposes a simple, practical and well accurate impetus resultant force fitting method, weighted factor fitting method. a line - off data processing software system for bird - impact experiment, named as cadabie, is well designed under the principle of software engineering, and has been applied, with high praise, in bird - impact laboratory in the factory numbered 320 and esfahan bird - impact laboratory of iran

    本文系統總結了鳥實驗的全部過程、主要儀器設備的工作原理與性能參數,分析了鳥實驗動態數據採集系統中位移、變與傳感器測量系統的測量范圍、測量精度及其工作特點,提出了一種更適合鳥實驗的計算擬合方法:加權因子法,同時用軟體工程原理編制了「鳥實驗計算西北工業大學博士論文機數據分析系統」 ( caoabie ) ,目前該軟體己經在320廠鳥實驗室以及
  7. The presented neural network takes strain - time data as input at two locations on the back of struck body, and gives highly precise outputs of the impact force - time data, impact kinetic energy and the coordinates of impact position

    本文提出的神經網路方法採用被體上選定兩位置點的變-時間歷程數據,即可高精度反演出-時間歷程以及點坐標及動能等參數。
  8. Analysis and calculating to impacting stress and stroke of the impacting hammer in the striking of a pile hammer

    樁錘過程中沖及夯錘工作行程的分析與計算
  9. Hydraulic pile hammer is one of the pile driving machines that drive prefabricated piles into the ground in the construction of pile foundation such as construction, bridge, dock, etc. with the development of science and technology, the prefabricated pile driving machines evolve from block hammer, steam - hammer, diesel hammer to hydraulic hammer. hydraulic pile hammer is one of ideal prefabricated pile driving machines because it can adjust stress waveform, decrease stress peak value, prolong effectual action when it drives piles. hydraulic pile hammer is used widely and formed series in developed countries now

    液壓打樁錘是用於建築、橋梁、碼頭等樁基礎施工中打入預制樁的樁工機械。隨著科學技術的進步,預制樁施工機械由落錘、汽錘、柴油錘,發展到了液壓打樁錘。用液壓打樁錘打樁,可以調整撞擊應力波波形,減小峰值,延長有效作用時間,是一種比較理想的預制樁施工機械,目前在發達國家已被廣泛使用,並形成了系列化。
  10. Mechanical impact dynamics is used to analyse the production and spread of stress wave when hydraulic pile hammer hammerblows piles, the stress wave influence the course of driving pile. slender hammer that is equal to wave resistance of the pile can bring ideal stress waveform. when the hammer weight is constant, efficiency of driving pile can be increased by means of selecting drive cap and cushion pad of different rigidity to match the hammer according to various geological condition and the pile. the structure and principium of hydraulic system of double - acting hydraulic pile hammer with double cylinders is studied in detail in the paper, the hydraulic system and electric control system of six - ton - double - actin hydraulic pile hammer with double cylinder is designed on the basis of it

    本文用沖機械繫統動學分析打樁過程中錘體與樁波的產生、傳播以及該波對沉樁過程的影響。認為與樁等波阻的細長狀錘體能夠產生理想的波波形;在樁錘重量一定的情況下,可針對不同的地質情況和樁,通過選擇不同剛度的樁帽和樁墊與其匹配來提高打樁效率。本文對雙缸雙作用液壓打樁錘液壓系統的結構和工作原理進行了深入的研究,並在此基礎上設計出六噸雙缸雙作用液壓打樁錘的液壓系統和電控系統。
  11. The results proved that : ( 1 ) because of the material ' s difference of primer - 9 and primer - 5, the maximum stress of primer - 5 is larger than primer - 9 but the maximum displacement is smaller than primer - 9. ( 2 ) because of the unrenewable shape changing of primer - 9 after impacting by the pin, it will cracking under high pressure more easily. so, the paper give the suggestion that the designer should decrease the depth of impacting by pin in the case of the primer be fired successfully

    對底- 9底火、底部被后的第- 9底火和底- 5底火在膛壓作用下分別進行了有限元數值分析,計算表明: ( 1 )底- 5底火底部部位為火帽座,其材料為鋼帶,底- 9底部承受部位為底火體,其材料為冷拉退火圓鋼,由於材料強度不同,承受壓和變形能不同:雖然在膛壓作用過程中底- 5底火的最大值比底- 9底火的大,但底- 5底火的最大位移量卻比底- 9底火的小得多。
  12. Elastic - plastic dynamical response mechanism of a cantilever beam subjected to oblique impact at its tip

    端部受斜作用懸臂梁的彈塑性動模式
  13. The research of this paper includes : ? high - speed photography and flash x - ray radiography are both used to capture the process of al shell ' s great deformation under low pressure. front illuminations are used to get the development of the fracture on the al shell. the relative energy release is analyzed from overpressure curves measured with some sensors

    本文的研究內容主要包括: ?在受試炸藥經歷低大變形過程的susan試驗中,同時採用高速攝影、閃光x射線照相對彈體的靶過程進行了拍攝,得到了殼體膨脹變形過程圖像,並使用前照明技術觀察到了鋁殼表面產生的裂紋及其發展變化過程;從壓傳感器測量的空氣沖波超壓曲線,獲得反釋放總能。
  14. The elephant foot bulging deformation develops with the increasing stress of the rigid wall, which is caused by the uplift of the tank bottom and the impaction between the tank bottom and the foundation

    因罐底提離導致的罐底與基礎反復加大了作用在罐壁上的,使罐壁底部「象足」變形不斷發展,最終導致罐壁撕裂。
  15. A predigested car model and a reasonable bridge model were presented after the bridge structures and the colliding characters were analyzed. the stress and the displacement of the concrete, bar, pre - stress bar changing with time were presented. the stress of the whole bridge at the time of the contact and the deformation of the whole bridge at the end of the contact are obtained

    採用美國ansys公司的有限元軟體ansys ls - dyna對碰過程進行數值模擬分析,得到了點附近混凝土、普通鋼筋以及預鋼筋的及位移隨時間的變化規律,同時得到了全橋在碰后瞬間的分佈規律和碰結束前全橋的變形規律。
  16. This paper firstly presents the impact basic theories and the applying method for the general engineering fem software system - ansys, then the preliminary numerical simulation has been conducted in the mechanical process of the laminated composite plates subjecting to the impacting loads, the higher - velocity hit between the composite shells and the metal structures, the bird - impact radar cover experiment is also included. changes of the mechanical values in subjecting to different impact loads are also analyzed

    而後通過對復合材料結構層合板遭受沖載荷作用、球殼與金屬板的高速,以及雷達罩鳥實驗等學過程進行了初步數值模擬,分析了主要的學參數量在承受不同沖變量時的變化,並為部分理論計算找出了相的實驗依據。
  17. 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 、用大型科學計算程序anasys - dyna ,對彈性體碰進行了數值計算驗證並與理論結果對比,獲得了計算參數用的實踐經驗;在此基礎上,進行了鳥體飛機風擋結構動學響的實際數值計算,與此同時安排了工程鳥體試驗,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。
  18. Application of pvdf sensor to the collision stress detection on the projectile base of artillery

    傳感器在火炮彈底撞擊應力測試中的
  19. In this thesis, a combined method of finite element numerical simulation with neural network is studied to obtain the dynamic response, the impetus forces and impact parameters of windshield during bird impact

    本文採用鳥實驗、有限元數值模擬與神經網路相結合的方法研究鳥飛機風擋過程中風擋的響以及鳥實驗中參數的獲得。
  20. To reduce the impact of skipping on your feet, you should choose a pair of sports shoes with shock - proof or insole design

    為減輕腳部因跳繩時與地面接觸而產生的選擇有避震或彈性設計的運動鞋較佳。
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