finite-strain theory 中文意思是什麼
finite-strain theory
解釋
有限應變理論-
Perfect pre - processing and post - processing function is one of the main factors to evaluate the vitality and market value of the finite element analysis system surveying today development of finite element analysis technology, most of which concentrate on establishing fine user interface, also has some limitation on application, and especially, the research on the visualization of arbitrary cut - plane is always in ascendants to realize the visual processing on cut - plane needs reprocessing the results of finite element analysis which have get, so the algorithm is two parts : seeking the physical value of cut - plane and drawing 2d contours, the former, based on the theory of stress on " arbitrary inclined plane " in physical mechanics, use the method of linear interpolation method to get the coordination and physical value of intersection between cut - plane and element arris ; the latter, based on the tables on elements, nodes, stress and strain, summarize a rapid algorithm of generating 2d contours based on the grid. this thesis synthesizes there two parts and get a visual processing program under fortran
縱觀有限元分析技術的發展，目前大多集中在建立良好的用戶界面上的研究仍存在許多應用上的局限性，其中對任意剖面上可視化的研究仍處于方興未艾的階段。要實現任意剖面上可視化處理，必須先將得到的有限元計算結果進行再處理，因此在演算法上分為兩部分：求任意剖面上物理量值的演算法及二維等值線演算法。前一部分以彈性力學中「任意斜截面的應力」為理論基礎，利用線性插值方法得到截面與單元棱邊的交點坐標及交點物理量值；在此基礎上；根據已得到的單元及節點序號表、應力應變物理量表，總結出一種基於有限元剖分網格的快速生成二維等值線的演算法。 -
Based on the generalized variational principle of the modificatory variables and substituent shearing strain field interpolation of the bending theory of the mindilin plate, this paper brings up the nine - node mixed plate bending element and adopts the sap2000 ? a large - scale finite element analysis programs. by the examples, we find the precision of the method is satisfying
在對轉換層厚板進行局部有限元分析時，本文提出了基於mindlin中厚板彎曲理論的修正的二類變量廣義變分原理和替代剪應變場插值方法的九節點厚薄板通用的板彎曲單元，並採用了sap2000有限元程序。 -
Also, the thesis calculate and analysis the transverse deflection of steel box girder deeply in multiple factors. firstly, the article introduced the calculative methods and theory of local stress and strain of bridge structure. then program software system of finite element method was introduced. after that, the influential factors to the calculatial result and their values were analysed and suggested
本文首先介紹了橋梁結構局部應力應變計算理論和方法，對有限元計算程序進行了介紹，然後分析了縱橫隔板設置、梁高及梁寬變化等因素對鋼箱梁橋面板在恆載作用下的橫向撓度的影響，並將這些計算結果進行對照分析，從而找出了影響橋面板橫向撓度的主要影響因素，並得出了相應的數值可供工程實踐參考。 -
Matrix formulation of eulerian governing equations of finite strain consolidation theory
歐拉描述的有限應變固結控制方程之矩陣表述 -
The development of finite strain consolidation theories based on continua mechanics and mixture theory is detailed and the differences and consistency between these theories are remarked on
介紹了基於連續介質理論和混合物理論的大應變固結理論的發展，論述了兩種一維大應變固結理論之間的差異及其一致性。 -
Now, it is important to develop the composite blade researching, two measures including analysis methodology and finite methodology are provided. in this text, the finite rotation composite beam theory developed by hodges and his co - workers, during the late 1980 ' s, is adopted in order to research rotor of helicopter. a liner and two - dimension finite analytic measure is used to calculate the section characteristic and strain of the blade ; a semianalysis methodology is used to calculate the sensitive degree of section characteristic
以giavotto的線性二維有限元分析模型為基礎考慮了復合材料槳葉的結構和變形特點，計入了剖面翹曲的影響，在此基礎上編制了具有八節點等參元復合材料槳葉剖面剛度計算的有限元程序，分析計算了復合材料梁的剖面剛度、彎曲中心、剪切中心；並利用半解析法進行剖面剛度、剪切中心、彎曲中心的參數靈敏度分析。 -
Observing the mechanics and effect of the new strengthening method with test and finite element method is supposed to offer a guide for technology and become valuable in theory and practice. both compression test, including four reinforced and three control specimens, and shear - compression test, including nineteen reinforced and four control specimens are being studied in this paper. the research on the curves of load - strain, load - deflection and hysteretic shows that the transverse translation of the reinforced columns is well controlled with an upgrading of both ductility and ultimate bearing capacity ( ubc )
本文對4根鋼絲網外噴高強砂漿加固鋼筋混凝土柱和3根對比鋼筋混凝土柱進行了軸壓試驗研究，並對19根加固鋼筋混凝土柱和4根對比鋼筋混凝土柱進行了剪壓試驗研究；通過對試件荷載-應變曲線、荷載-撓度曲線和滯回曲線等的研究表明，採用該加固方法能有效的約束柱子橫向變形，並對提高鋼筋混凝土柱的極限承載力和延性有明顯的效果；同時根據理論及加固機理分析提出了適應於此加固方法的軸壓極限承載力計算公式。 -
The result of a case studying shows that the settlement calculated by large strain consolidation theory is large than that by infinite strain theory during the consolidation procession, but the final settlements calculated by both theories are same. more general assumptions than that in the classical consolidation theory is adopted and the exact analytical solution of nonlinear finite strain self - weight consolidation based on this assumption is obtained. by applying same experiment data, the comparison of the solutions of linear and nonlinear finite strain theory, as well as the numerical solution from finite element method is presented
對此模型求得到了某些特殊條件下的lagrange級數解答，並通過尾礦沉降池實例分析，驗證了所得解答的合理性和有效性；建立了土體在堆積過程中的大應變固結模型，通過其對稱性構造出相似變量之後，由攝動法求得了近似解析解答，並通過試驗數據與傳統的線性化固結理論的解答相比較，顯示了傳統線性化固結理論在該問題上的局限性。 -
The distribution of stress and strain and the variety of blank thickness is analyzed during different forming stages of laminose stepped tubular part. the condition of one - off drawing of laminose stepped tubular part is obtained. plasticity theory and numerical simulation technology of finite element are applied synthetically to analyze the forming technological characteristic of stepped tubular part,
通過綜合應用塑性力學理論、有限元數值模擬等手段成功地分析了階梯筒形件成形工藝特點，獲得了階梯筒形拉深的合理工藝方案及階梯筒形件一次拉深成形的規律，最後通過實驗檢驗對此工藝方案及規律進行了驗證，結果表明本文所提出的工藝方案及階梯筒形件一次拉深成形規律是正確可靠的，能直接用於指導生產。 -
In order to find out the reason of bursting under low pressure, macro stress and strain of srmcs were analyzed by using compound theory, netting theory and nonlinear finite element method ( fem ). it was concluded that the damages of the srmcs led to the bursting of case b under low pressure
針對發動機b殼體發生低壓爆破的問題，應用復合理論、網格理論和非線性有限元法對b殼體進行了宏觀應力應變分析，從而確定了b殼體低壓爆破的原因是由於損傷所致。 -
Through the detailed analysis of cavity expansion theory, strain path method and finite element theory applied in jacked pile, some deficiencies are put forward. according to the analysis, some main original work are made. firstly, on the basis of strain path method ( spm ), closed - form analytical expressions of displacement fields caused by the installation of jacked pile are obtained in small strains
本文首先詳盡地分析了圓孔擴張理論、應變路徑理論、有限元理論在靜壓樁擠土效應方面存在的不足，並在此基礎上做了如下工作： 1 、基於spm法的理論基礎，在小應變假定情況下，推導了靜壓單樁周圍土體位移場的解析解。 -
In order to fully develop the theory of squeezed branch piles, in particular, the justification of its superior performance in terms of the bearing capacity and sinking displacement, we have derived the analytical formulas of the axial load and the strain at arbitrary depth ; based on existing static loading test results and research on belled pile, together with the analysis of on - site testing data, we have applied the expand theory on sphere holes to the computation of radial stress of squeezed branch piles under hole expansion ; taking the oil pressure of hole expansion in to account, we have find the a branch force under certain hole pressures, hence we can estimate the maximum bearing capacity of single piles ; we have introduced the experiential formulas for the bearing capacity of squeezed branch piles based on its stress characteristic and pile testing data ; we have also done numerical simulations of squeezed branch piles utilizing finite element method software ansys ; we have matched the simulation res ults with those of on - site basic load experiments, regenerating the distributions of stress fields and strain fields of squeezed branch piles, and from those distributions, we can determine the optimal distances between plates and piles
為了完善支盤樁的設計理論，探求支盤樁高承載力和低沉降量的內涵，本文推導出了支盤樁任意深度的截面荷載以及位移隨深度變化的理論公式；基於已有的靜載試驗成果及有關擴底樁的研究成果，從對現場測試數據的分析，將球形孔擴張理論引入到支盤樁擴孔時徑向應力的計算，考慮到擴孔時的油壓數據，求得某一孔壓下的支盤力，據此估算單樁極限承載力；同時根據對支盤樁的受力特點和試樁數據的分析，提出了支盤樁承載力計算的經驗公式；用有限元分析的方法，利用大型有限元分析軟體ansys對支盤樁進行數值模擬，並將模擬結果同現場的靜載試驗結果進行對比，再現了支盤樁在荷載作用下土中應力場和位移場的變化，根據應力場和位移場的變化范圍，指出最佳盤間距和樁間距；為支盤樁的設計和施工提供了一個可量化的設計依據。 -
And then, according to finite element theory of reinforced concrete, the main calculating program of " nonlinear finite element ultimate analysis of reinforced concrete thin slabs with complex geometry & boundary condition " is made by using the triangle layered - assembled element of elastic thin slabs and the stress - strain relation by considering concrete as anisotropic material under effecting by two - way stress, and the concrete material model presented by darwin and pechnold, and the yield criterion of concrete presented by kupfer and gerstle
然後根據鋼筋混凝土有限元理論，以三角形分層組合式的彈性薄板彎曲單元為基礎，考慮混凝土為各向異性材料在雙向應力作用下的本構關系，採用darwin和pechnold的混凝土材料模型和kupfer與gerstle等人研究的混凝土破壞準則，編制了「復雜幾何形狀和邊界條件鋼筋混凝土薄板非線性有限元極限分析程序」中的核心計算程序。
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