critical buckling 中文意思是什麼
critical buckling
解釋
臨界曲率-
Two concepts of critical length of slope and maximum buckling place is defined here to evaluate its stability. applications of two practical projects demonstrate this method ' s accuracy and feasibility. at the same time, all the factors which maybe infect the slope ' s stability, such as the mechanical performance of joint and rock, physical and geometrical character of slope, are considered
並以兩個實際工程實例驗證了本文方法的精確性及可行性；與此同時，本文對各影響因素如結構面的力學特性、巖體的力學特性及坡體的一些物理幾何特徵對該類邊坡穩定性的影響作了分析。 -
Series analysis showed that the critical buckling pressure of cylinder under external pressure could be obviously decreased with the increase of ellipticity of cylinders
系列計算表明，外壓圓筒體屈曲臨界壓力值會隨筒體橢圓度的增加而明顯降低。 -
Expression to determine the critical load of frames braced by flexural - typed bracings was presented. how the bracing beams influence the buckling modes of the frames when the bracing stiffness is increased was also investigated
進一步，根據彎曲型支撐剛度與框架臨界荷載的變化關系，得到了使框架發生無側移失穩的彎曲型支撐臨界剛度的計算式。 -
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理論，進行了后屈曲分析，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屈曲特徵方程，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論。 -
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原理建立非線性動力穩定性問題的一般性基本方程。然後重點討論了編織復合材料圓柱殼軸壓下的蠕變屈曲問題及非保守力作用下的屈曲問題。對蠕變屈曲問題，通過理論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。 -
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屈曲性態，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。 -
In the analysis of the elastic local buckling strength of the stiffener ' s web, the elastic critical stress is analytically derived by solving the characteristic value problem involving the governing differential equation under the corresponding loading and boundary conditions
對于加筋板中加強筋腹板的局部屈曲，則用解析法推導出筋的腹板的撓度方程及其邊界條件，求解相應的方程，從而計算出腹板的局部屈曲應力。 -
Pole, thin plate, thin shell in the electromagnetic elastic system, etc. when there is no machinery to restrain, the system has an unstable movement mode at least, and while exists restrain, after up to a certain critical value in electric current or the magnetic fielding, buckling must take place in the system
電磁彈性系統中的桿、薄板、薄殼等，當沒有機械約束時，系統至少存在一個不穩定的運動模態，而存在約束時，當電流或磁場達到某一臨界值后，系統將發生屈曲。 -
Critical buckling load of circular thin plate by weighted residual method
用加權殘值法求圓形薄板壓曲臨界荷載 -
By the use of dynamic buckling supplementary restraint conditions at the compression wave front of cylindrical shells at the instant when the buckling occurs, the critical load and dynamic buckling modes of shells were calculated from the solutions of finite element characteristic equations
計算結果揭示了圓柱殼彈性軸對稱動力屈曲變形發展的機理，以及軸向應力波和屈曲變形的相互作用規律。 -
In the small deflection theory, by buckling analysis, the classical buckling critical load of integrative braid composite cylindrical shells under axial compression is get. according to the experience and the results of fem, a revised formula for calculating buckling critical load is presented
在小撓度理論中，通過前屈曲分析得到了完善的編織復合材料圓柱殼在軸壓情況下的經典屈曲臨界載荷，根據經驗及有限元計算結果，提出了計算屈曲臨界荷載的修正公式。 -
Local buckling capacity of steel composite beam subjected to combined bending, shear and patch loading is one of key problem in steel structures design. the computational formula for local stability of web was based on the assumption of infinite - elastic perfect plates in the steel structures design code ( gbj17 - 88 ). but in the revised code ( gb50017 - 2003 ), this formula was made big change with reference to british code ( bs5950, partl ) and australian code ( as4100 ), the related research result of our country was included as well. in the modified formula, influence of early geometric imperfection and elastic - plastic buckling stage were considered, which is compatible with both actual circumstance of engineering and the strength formula of beams under bending stresses ( considering partial plasticity of the section ). in this paper, the preceding problem is deeply analyzed and studied, considering the effects of various geometric parameters and stress combinations on buckling critical stress of web, the revised local buckling correlative formula for transverse and longituded stiffened web panels under combined stresses is analyzed and verified by finite element method
組合鋼梁腹板在彎、剪及局壓復合應力作用下的局部屈曲承載能力是鋼結構設計中需考慮的問題，新的《鋼結構設計規范》 （ gb50017 ? 2003 ）對此部分內容作了較大改動，原規范中關于腹板局部穩定的計算公式是基於無限彈性的完善板假定；新的規范則參考了英國規范（ bs5950 part1 ）及澳大利亞規范（ as4100 ）並結合我國相關研究成果，考慮了屈曲進入彈塑性階段以及初始幾何缺陷的影響。這不僅與工程實際情況相符，而且也與鋼梁在彎曲應力作用下允許截面部分進入塑性的計算公式相協調。 -
The discrete stiffener solution and orthotropic plate solution are used for analyzing the buckling behavior of intermediately stiffened plates theoretically in this paper. thus, closed - form solution of critical buckling stress and required adequate stiffening rigidity of the stiffener is obtained
本文分別用分離加勁肋法和各向異性板法對縱向中間加勁板件的屈曲性能進行了理論分析，得到了屈曲應力和理論充分加勁剛度解析表達式。 -
Effect of geometric nonlinearity on the critical time of creep buckling for a compressed column
幾何非線性對壓桿蠕變屈曲臨界時間的影響 -
In the analysis of the elastic tripping of the stiffener, the critical stress under this mode of failure is derived by using the energy method and the principle of least potential energy. in the analysis of the elastic overall buckling of stiffened plates, attention is focused on global buckling, and local buckling effects are neglected
對于加筋板中筋的側傾失穩，則通過能量法推導加強筋側傾失穩時的總勢能泛函，利用最小勢能原理求解出此失穩模式下的臨界應力。 -
Furthermore, the effects of gradients of material properties and boundary conditions on the critical buckling load and post - buckling behavior of the functionally graded plates were discussed
利用數值結果考察了梯度材料性質以及邊界條件對板過屈曲行為的影響。 -
Thne results show that not only the nonlinear elastic critical pressure is much less than linear one, but also the inner pressure can significantly enhance the critical buckling axial load, so it provides a elastically theoretical basis for internal high - pressure forming technology
計算結果表明不僅非線性彈性臨界載荷遠低於線性彈性臨界載荷，而且更重要的是內壓很大程度上有助於提高柱殼軸向彈性臨界屈曲載荷，這樣為內高壓成形工藝提供了彈性失穩理論依據。 -
A beam or a column often supports other members which participate in the buckling action, and significantly influence its in - plane stability and out - of - plane stability. if these elastic restraints action of buckling resistance is taken into account the critical loads of steel members may apparentely been increased and plenty of steel material is saved
梁或柱為其連接的其他構件提供支撐，同時，與梁或柱相連接的構件也為梁或柱提供約束作用。這些約束作用極大地影響著梁或柱的平面內穩定和平面外穩定。利用連接構件之間約束作用，鋼構件的穩定臨界荷載可以得到顯著的提高，節約大量的鋼材。 -
By solving the dynamic buckling equation numerically, the effect of pre - load, impact yate and geometrical imperfection on critical impact load is studied
文中考查了靜力預載荷、沖擊載荷速度以及初始幾何缺陷對臨界沖擊載荷的影響。 -
The results of case a and case b were about the same, thus it was displayed that modifying structure did not cause the bursting under low pressure but the damages of the structure. second, an analytical model was developed to assess the critical buckling problem of near surface interlaminar rectangular defects in the cylindrical part of srmcs under axis and interior pressure loads. the relationships between critical strain value and the parameters of geometry and radius of cylindrical were discussed
在最大壓力為水檢壓力的作用下，應用有限元計算出殼體的整體變形以及不同部位的各種應力（不同應力分量）和位移分量，與試驗結果均比較吻合，證明採用大變形方法分析殼體宏觀應力和變形是合理的， a殼體與b殼體的應力、變形情況基本相同， b殼體發生低壓爆破不是由於結構參數的調整造成，而是由於各種試驗導致的累積損傷造成的。
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