buckling deformation 中文意思是什麼
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The three - dimensional analytic model on laminated piezoelectric shells is also studied. the main achievements are summarized as follows : firstly, buckling models for beams and cylindrical shells with arbitrary penetrative delaminations are established based on the first and higher - order shear deformation theory
本文研究工作的重點是建立含內埋脫層的復合材料層合結構的屈曲分析模型，其次是建立壓電層合殼的三維分析模型。 -
The solutions are compared with previous theoretical results. conditions of inextensibility and negligible prebuckling in - plane deformation usually adopted in arch buckling analysis are also discussed
文中還討論了拱屈曲問題中通常採用的兩個假定對計算臨界荷載的影響。 -
Results showed that the ductility of bolt spjice is much better than welds, weaker splice joints develop larger plastic deformation, slipping between faying surfaces, bearing of bolts to hole surfaces and buckling of splicing plates are all ideal energy dissipation mechanism
試驗結果表明：螺栓拼接節點的延性遠好於樑柱焊縫連接；較弱的拼接節點產生較大的塑性變形；接觸面的滑移、螺栓與孔壁的擠壓和翼緣拼接板的屈曲都具有良好的耗能能力。 -
Soil springs are used around the pipe including vertical, lateral and axial soil springs to consider the interaction between the pipeline and the surrounding soil. the pipe segment near fault that usually suffers large deformation is modeled with a plastic shell element in order to consider the effect of local buckling and section deformation. to reduce the calculating time of the whole model, an equivalent spring proposed by the author is applied at two ends of the shell model
為了解決現有的殼單元方法需要大量計算機時的缺點，本論文首次從理論上把離斷層較遠管土之間相對變形較小的管子直線段部分的變形等效為一個非線性彈簧，將此等效邊界引入到有限元模型中，使得模型中的殼單元部分主要用來分析我們所感興趣的在斷層附近發生大變形的管段，從而達到節約計算時間的目的。 -
It is also shown that the buckling failure of the rigid wall arises easier from the horizontal seismic ground motion than from the vertical one, therefore the elephant foot bulging deformation is also easier produced
在完全相同地震加速度作用下，水平地震作用比豎向地震作用罐壁更早更容易進人屈曲狀態，產生「象足」變形。 -
When the crossing angle is larger than 90 degree, the pipeline would prone to suffer a buckling damage ; ( 2 ) it cannot be used to analyze the large deformation in the pipe section
現有的殼模型有限元方法雖然可以分析管截面中的大變形情況，但是，由於在斷層作用下受影響的管子的范圍比較長，需要耗費大量的計算時間。 -
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理論，探討了工程中常見的順向層狀巖體邊坡潰屈失穩時的破壞機理、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曲位置的確定方法。 -
First, higher - order shear deformation theory and reddy ' s simplified higher - order shear deformation theory of the flat shell is adopted to obtain the buckling governing equations. then the geometric nonlinear theory and the geometric and material dual - nonlinear theory with shear effects are introduced ( the buckling governing equations are get ). the simplified geometric nonlinear theory and the small defection theory are discussed as emphases
首先採用扁殼高階理論及reddy型簡化高階剪切變形扁殼理論，得到了屈曲基本方程，然後介紹了考慮剪切的幾何非線性理論及材料幾何雙重非線性理論（得到了屈曲基本方程） ，重點討論了簡化的幾何非線性理論及小撓度理論。 -
When temperature increases, deformation will develop under post buckling conditions, and it is difficult to describe axial force with analytic method, so numerical method is used
以此為基礎，分析管柱升溫時的軸向力和變形，確立計算步驟和邊界點的處理方法。 -
Experimental results show that the new cfrt - column to steel - beam joints proposed in this paper possess good earthquake resistant capacity. the infilled concrete benefit to restrain the buckling deformation of column webs, increase the strength and stiffness of the joint. the lengthened stiffener can transfer much more beam moment, make the strength of the joint increased
試驗表明，在保證焊接質量的前提下，本文提出的新型方鋼管混凝土柱?鋼梁的節點具有良好的抗震性能；內填混凝土有利於抑制柱腹板的屈曲變形，增加節點的承載力和剛度；加勁肋長度的增加有利於傳遞梁端彎矩，使節點的承載力提高。 -
In the buckling question under nonconservation force, a simply example ( the dynamic stability question under the uniformly follower forces with small deformation % linear elastic, straight normal. ) is considered. the variational equation of braid composite cylindrical shells subjectd to uniformly follower forces is deduced based on the variation principle of quasinatural frequency of elastic nonconservative system self - excited vibration. the calculated formulas of the flutter load and quasinatural frequency of shells are obtained. the program for calculating the flutter load is developed. the numerical example is given and some useful conclusions are obtained
對非保守力作用下的屈曲問題，具體研究了圓柱殼在比較簡單的情況，即小變形、線彈性、直法線假設下在隨動力作用下的殼屈曲問題，由擬固有頻率變分原理推出了圓柱殼受隨從力作用的變分方程，得到了顫振載荷與殼彎曲的固有頻率的計算公式，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。 -
This paper is the research on the local interactive buckling behavior of cold - formed rectangular tube under uniform compression. the paper includes the following main contents : ( 1 ) an elastic interactive buckling model is presented on the basis of the theory of elastic plates. under the equilibrium condition and deformation compatibility condition, analytical expressions are derived to predict the interactive bucking load pcr
本文主要研究冷彎薄壁矩形鋼管均勻受壓下板組的相關關系，包括以下主要內容： （ 1 ）建立了彈性相關屈曲解析法分析模型，考慮平衡條件及變形協調條件，建立板組的屈曲微分方程，得出了板組相關屈曲的臨界荷載p _ （ cr ）的計算行列式。 -
The proposed beam model satisfied the rigid - body test requirement. by using general displacement control method ( gsp method ) to determine the incremental load parameter and using incremental tangent method to deal with material non - linearity, the proposed beam model were proved to be able to track the entire procedure of deformation, numerically effective during buckling or snap - through of structure
一系列的典型算例分析表明，本文提出的彈塑性大位移梁單元，能夠準確的跟蹤結構變形的整個過程，包括極值點失穩和跳躍屈曲的情況，可以運用於框架結構的屈曲后性能研究和非線性極限承載力的分析計算。 -
In the end, the steel - reinforced concrete arched bridge ( chun ' an weiping bridge ), which span is 198m, is analyzed by the proposed three - dimensional nonlinear finite element method and also those gained conclusions are directly adopted in the computation. the universal stability coefficient and nonlinear buckling stability coefficient of the bridge are respectively computed, in which the dead load and the live load are assembled according to the criterion. on the other side, the regularities of creep deformation and subsidiary stress of the investigated bridge under the first - stage dead load are carefully researched
最後，將本文所提出的三維非線性分析方法及其主要研究成果直接應用於198m跨勁型骨架式鋼管混凝土拱橋「淳安威坪大橋」的分析計算中，對該橋在最不利恆載和活載組合下的一般特徵值失穩系數和非線性屈曲系數進行了對比研究，並對一期恆載長期作用下該橋的徐變變形、附加應力以及截面應力、應變重分佈規律分別進行了深入研究。
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