屈曲理論 的英文怎麼說

中文拼音 [lún]
屈曲理論 英文
buckling theory
  • : 曲名詞1 (一種韻文形式) qu a type of verse for singing which emerged in the southern song and ji...
  • : Ⅰ名詞1 (物質組織的條紋) texture; grain (in wood skin etc ) 2 (道理;事理) reason; logic; tru...
  • : 論名詞(記錄孔子及其門徒的言行的「論語」) the analects of confucius
  • 理論 : theory
  1. At present carbon fiber - reinforced composite is developed to use in some aero - engine components in our country. using the numerical method and fatigue damage theory, the buckling and fatigue on the composite materials and composites case are studied for aero - engine design

    本文從實際工程背景出發,利用板殼和現代數值分析技術的研究成果,結合疲勞累積損傷,對航空發動機用的復合材料及其機匣結構的與疲勞壽命問題開展了較為系統深入的研究。
  2. The triaxial shear test of the original loess is carried out and the ct scanning is ongoing at the same time. combining images and data of the ct scanning with the stress - strain curve, the course of soften dehiscence damage and harden yield damage is explained by means of damage theory

    進行了原狀黃土的三軸剪切試驗過程中的ct掃描,結合ct圖像、數據與應力應變線,利用損傷方法解釋了軟化開裂破壞和硬化服破壞過程。
  3. The simplified geometric nonlinear theory is used in post - buckling analysis. galerkin method is employed to derive the eigenvalue equation of the shell containing initia l geometrical imperfections. the buckling critical load is get. the program for calculating the buckling critical load is developed and the numerical example is given.

    採用簡化的幾何非線性,進行了后分析,應用galerkin法推導得到了含有初始幾何缺陷的編織復合材料圓柱殼的特徵方程,得到了臨界荷載的計算公式,編制了相應的計算機程序,並給出了具體算例,得到了一些有益的結
  4. First, the dynamic stability of braid composite cylindrical shells with the influences of some main factors is introduced. the general governing equations for the nonlinear dynamic stability is obtained. by the hamilton principle. the creep buckling analysis of braid composite cylindrical shells under axial compression and the dynamic stability under nonconservation force are discussed as emphases. in creep buckling question, by means of theoretical analysis, the instaneous critical load and durable critical load of viscoelastic braid composite cylindrical shell under axial compression are obtained and the numerical example is given

    首先介紹了編織復合材料圓柱殼在幾種主要因素影響下的動力穩定性問題,用hamilton原建立非線性動力穩定性問題的一般性基本方程。然後重點討了編織復合材料圓柱殼軸壓下的蠕變問題及非保守力作用下的問題。對蠕變問題,通過分析來得到了編織復合材料圓柱殼的瞬時彈性臨界載荷和持久臨界載荷,給出了具體的算例。
  5. Based on the arch - cantilever method, the stability of arch ring and cantilever beam against elastic buckling in arch dams are analyzed with the theory of elastic stability, and the conclusion is drawn that the stability of arch dam against elastic buckling is governed by the top arch ring

    按照拱梁分載法的思想,用彈性穩定分別對拱壩的拱圈和懸臂梁的抗穩定性進行了分析,得出拱壩的抗穩定性由壩頂拱圈控制的結
  6. Experimental study of the aseismic behavior of self - compacting high strength concrete frames

    圓鋼管混凝土壓彎長柱非線性承載力的研究
  7. In accordance with the occurrence behavior of roof strata and the fracture characteristics of key stratum in shallow seam longwall mining, studied post - buckling behavior of roof key stratum in the process of mining by using initial post - buckling theory, which derived a critical load and a breaking span of the main roof during the first weighting, determined the final subsidence and the maximum rotation angle for broken key stratum, and presented an application with the example of daliuta 1203 face

    摘要根據淺埋煤層頂板巖層的賦存特點和長壁開采時關鍵層的變形破斷特徵,應用初始后屈曲理論探討了開采過程中頂板關鍵層的后性態,得出了老頂初次來壓時頂板的臨界載荷和破斷步距,確定了頂板破斷后的極限下沉量和回轉角,並以神東礦區大柳塔1203工作面為例給出了工程實例。
  8. Based on the classical nonlinear plate theory, axisymmetric post - buckling behavior of a functionally graded circular plate under radial compression was investigated

    摘要基於經典非線性板,研究了功能梯度圓板在均勻的徑向壓力作用下的軸對稱過問題。
  9. The author analyses the tripping of stiffener and three patterns of panel ' s invalidation, so to get the curve of stress - strain of panel. this step is the core of the thesis

    本文從入手,分析了加筋板單元中加強筋的側傾,然後根據加筋板的三種破壞模式,得到單元的應力應變關系線,這是本文的重點與難點。
  10. In the past, two following respects that the study on magnetoelastic stability theory was main and centralized : first, setting - up and revision of the soft ferromagnetism plates buckling theory model ; second, represented by the tokamak thermonuclear current - carrying rector coil, the stability of current - carrying coils and poles under magnetic field has been studied

    以前,對磁彈性穩定性的研究主要集中以下兩方面:一、軟鐵磁性薄板屈曲理論模型的建立及修正;二、以tokamak核聚變反應堆環向磁場載流線圈為代表的對載流線圈及載流桿件的穩定性研究。
  11. ( 3 ) by using an elastic - plastic material model, the nonlinear analysis is taken on the rectangular tube and simply supporte d plate, and the ultimate carrying load capacity pu is obtained. the results show that the buckling mode is in accordance with the assumption of elastic analysis, and so shows the ultimate mode

    ( 3 )採用彈塑性模型,考慮幾何非線性,利用ansys軟體對矩形鋼管考慮板組相關影響和不考慮相關影響(將矩形管板件按四邊簡支板對待)兩種情況進行了後分析,分別得出其極限承載力p _ u ,並分析了矩形管的過程。
  12. In the formula, our experience in structural strength design and the experimental results are considered. and such factors are also considered as differences in materials of the skin and the reinforcer, effects of bending, torsion, stretching and offcenter of the reinforcer. furthermore, through post - buckling stress analysis of the skin, it is shown that even low stress level will result in buckling of the skin, but the skin still has loading capacity

    在總結過去結構強度設計和試驗分析的基礎上,應用扁殼,在廣義力與廣義應變關系中考慮了蒙皮與加筋不同材料以及加筋的彎、扭轉、伸縮和偏心等的影響,推導出適合於工程應用的加筋殼結構軸壓臨界載荷的計算方法;並通過對薄壁結構蒙皮后應力分析,說明蒙皮在很低的應力水平時就出現失穩現象,但失穩后的蒙皮仍具有一定的承載能力。
  13. According to the elastic bucking theory this paper reviews and compares the calculations that such member bend around the reat axis and the hollow axis as well as bend with torsion around the hollow axis. here this paper presents a formula of calculating b used in with the h - shaped anglicizing element. meanwhile, this paper deduces out a formula of calculating b. by, which the member could be controlled to only buckle around the real axis

    本文根據彈性屈曲理論對雙肢格構式單軸對稱綴板柱繞實軸、虛軸以及彎扭進行了計算分析和比較,提出了繞虛軸側向的換算長細比_ ( oy ) = ( y ~ 2 + l ~ 2 ) ~ ( 1 / 2 )中的值用h計算單元指出的計算公式,同時推導出了單軸對稱綴板柱只出現繞實軸彎的最小肢間間距b 。
  14. Through comparing and analyzing of bearing capacity, development of crack and strain of reinforced, the results show that the load - deflection plots f or specimens from the finite element analysis agree well with the experimental data, and choosing the rightful stress - strain relationship, utilizing ansys program, the test process can be well simulated. at the same time, making used of the program, the traditional shear wall is analyzed. it shows that comparing with the traditional shear wall, the hollow shear wall ' s cracking load drop 16 %, yield load and failure load drop 13 %, stiffness drop 13 % ~ 22 %

    其次在試驗的基礎上,將試驗手段、有限元數值模擬方法和分析結合起來,利用有限元程序ansys對其中的兩片墻板進行非線性有限元分析,並對前後的承載性能,裂縫發展、鋼筋應變進行了比較和分析,結果表明有限元節點模型分析的荷載-位移線和試驗測得數據符合良好,選用合的材料本構模型,利用ansys可以較好的模擬試驗過程;同時利用有限元模型對比分析了普通剪力墻和空心剪力墻,空心剪力墻與普通剪力墻對比,其開裂荷載下降16 ,服荷載、極限荷載下降13 ,剛度下降13 22 ,開裂至服、服至極限荷載階段的剛度衰減規律與普通剪力墻基本一致,空心剪力墻的後期剛度比較穩定。
  15. At first, the mechanical model of joint is discussed, and the constitutive relation of the rough joint, especially the bolt - supported joint, is given. then bedding slide of bedding stratified rock slope is studied adopting limit equilibrium method, and a formula of stability is brought forward. at last, the bedding stratified rock slope ' s buckling deformation and failure mechanism and its evaluating method of stability is investigated, a corresponding mechanics model is established, then detail research to this failure mode is made in theory combining the energy law and elastic stability theory of plate and beam, and an analytical solution of the yielding curve is educed from this model

    文中首先對結構面的力學模型進行了一定的探討,提出了粗糙結構面尤其是加錨結構面的本構關系;然後採用極限平衡法,研究了順向層狀巖質邊坡的順層滑動失穩,提出了其穩定性計算公式;最後,結合能量定律和彈性板梁穩定,探討了工程中常見的順向層狀巖體邊坡潰失穩時的破壞機、變形規律和穩定性定量評價方法,建立了相應的力學模型,求出了其相應的解析解,並提出了臨界坡長與最大彎位置的確定方法。
  16. The results indicate that the stability for bifurcation point equilibrium configuration and post - buckling equilibrium path of roof strata can be revealed and an effective method for determining displacement field of imperfection structure can be provided by using initial post - buckling theory

    應用初始后屈曲理論可揭示淺埋煤層長壁開采頂板巖層的分叉點平衡構形及后平衡路徑的穩定性,是確定非完善結構位移場的一種有效方法。
  17. When there is original stage support only, the load ratio of surrounding rock gets more and more bigger with the increasing of crust stress, correspondingly, the load ratio of initial stage support gets smaller. when the initial stage support and the second support act each other, the load ratio of surrounding rock is more than fifty percent, and it has little change with the increasing of crust stress. the whole analysis of the surrounding rock and support shows that the bottom arch of liner and the feet of liner have serious stress concentration, so do the sidewalls and the foot of a wall of the surrounding rock

    通過屈曲理論分析結果對比表明,彈性和突變失穩分析的結果比非線性分析的結果要大得多,非線性分析由於考慮了材料非線性和幾何非線性,因而結果與實際接近實際;當只有初期支護時,隨著地應力的增加,圍巖的荷載分擔率增大,相應地,初期支護的荷載分擔率就減小了;當有初期支護和二次襯砌共同作用時,圍巖的荷載分擔率在50以上,這一分擔率隨地應力的增加其變化不大;支護和巖體的整體分析表明,襯砌底拱及拱腳處應力集中嚴重,隧道巖體側墻及墻角圍巖的應力集中也較大。
  18. But the theory of buckling of polar orthotropic plates is a challenge problem, and no perfect result has been worked out

    然而,極正交各向異性圓板的屈曲理論一直是一個比較具有挑戰性的問題,目前尚無完美的解答。
  19. This paper conducts a study of nonlinear stability behavior of a long - span prestressed concrete rigid - frame bridge at cantilever construction stage respectively by means of buckling, collapse theories and 3d nonlinear digital models, discusses the stability characteristics of other similar bridges at the same construction stage, and also generalizes some helpful conclusions

    摘要分別採用屈曲理論和壓潰,利用三維非線性數字模型,研究了懸臂施工階段大跨度預應力混凝土剛構橋的非線性穩定行為,探討了同類橋梁懸臂施工階段的穩定性,得出了一些有益的結
  20. It is found that initial brace deflections have significant effect on the stiffness and strength requirement which are interdependent ; and there is a very unfavorable interaction between lateral braces and columns imperfections. the calculating simplified model of this paper is not same with that of the former references. although this model is correspondingly conform to actual thing, the formula of lateral braces will be applied to practice after it is proved by experimentation

    首先研究了完全想情況下,得出了時柱計算長度減至一半所需的剛度;接著綜合考慮了柱子和撐桿的彎,利用有缺陷桿的軸壓切線模量概念和分枝屈曲理論,考慮前變形和內力的影響,同時用ansys有限元軟體進行分析,得出了同時考慮撐桿的剛度和強度的計算撐桿面積和撐桿設計內力的公式。
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