analysis of plane stress 中文意思是什麼
analysis of plane stress
解釋
平面應力分析-
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。 -
During the previous analysis of asphalt pavement structure with cracks, the stress intensity factors were usually calculated approximatively using plane strain model for some limitation. however, the assumptive load of this model is not coincident to the practical load
在以往分析含裂縫的瀝青路面結構時，由於條件的限制，通常是假設瀝青路面結構近似為一平面應變模型，但是這種模型所假設的荷載與實際作用的荷載有較大的區別。 -
Two numerating methods are used in traditional structural design of gate chamber. first, considering the gate frusta to be fastened on the weir body, it is calculated as plane stress problem independently. then applying the results ( moment and vertical force ) on the bottom of gate frusta as concentrating load on the weir body, and the weir body is viewed as a elastic foundation beam or plate and unilateral stress analysis was performed
傳統閘室結構計算有兩種計算方法，其一是將閘墩視為固端于堰體上，單獨進行閘墩平面受力計算，再將閘墩下部的計算結果（彎矩和垂直力）作為集中荷載作用於堰體上，堰體作為彈性地基梁或板進行片面應力計算。 -
In this paper, the finite - element numerical analysis calculation is applied to the foundation of high - rise and multi - floor building and the evolvement law of stress and displacement of tunnel used by urban traffic to explore the mutual influence between the wall rock of underground space and high - rise building foundation, taking account of the specific construction situation in the " sanmu garden " project in dadukou district in chongqing, from the perspective of underground space static - force structure stability analysis to open a underground tunnel with 6m in span and 7. 5m in height for track traffic 20m below the surface. this paper, taking considerations of three different states, i. e. the natural state without any artificial interference, the state of high - rise buildings on the surface, and the underground tunnel state with excavation for track traffic, and four plane lines and four vertical lines, analyzes and studies the distributing law of stress and displacement of calculation section from the following aspects : ( 1 ) the main stress vectorgraph, displacement distribution graph ( ux, uy ) and chromatogram graph of stress isoline ( 1, 2, xy ) of section under different states ; ( 2 ) the contrastive distribution curve of stress ( 1, 2, xy ) of different plane and vertical lines under the same state ; ( 3 ) the contrastive distribution curve of stress ( 1, 2, xy ) of the same plane and vertical lines under different states, wishing to provide references for underground space utilization and project designing and construction of the tunnel under high - rise buildings in the future
本文結合重慶市大渡口區「三木花園」開發建設項目，從地下空間靜力結構穩定性分析角度出發，針對在該項目中涉及的高層和多層建築物以及在其地下20米處開挖了一個用於軌道交通的跨度6米，高7 . 5米的地下隧道這一具體工程情況，採用2d - 3d -有限元結構分析程序對高層與多層建築物的地基基礎及其與城市軌道交通使用的地下隧道圍巖的應力與位移演變規律進行了有限元數值分析計算，探索了地下空間圍巖與高層或多層建築物地基基礎之間的相互影響，通過考慮未受到任何人為擾動影響的天然狀態、地表存在多層或高層建築物狀態和地下開挖用於軌道交通的地下隧道狀態等三種不同狀態以及4個水平剖線和4個垂直剖線等不同情況，從以下幾個方面具體分析研究了計算斷面的應力與位移分佈規律： （ 1 ）在各種不同狀態下計算斷面的主應力矢量圖、位移分布圖（ ux 、 uy ）以及應力等值線色譜圖（ _ 1 、 _ 2 、 _ （ xy ） ）等； （ 2 ）相同狀態下不同水平與垂直剖線的應力_ 1 、 _ 2和_ （ xy ）對比分佈曲線； （ 3 ）不同狀態下相同水平或垂直剖線的應力_ 1 、 _ 2和_ （ xy ）的對比分佈曲線等，為今後在對地下空間的開發利用以及在高層建築物地下開挖硐室時的工程設計和工程施工提供參考依據。 -
First, using strip - partitoning method and programming in matlab language, the numerical caculations of the relation curve between moment and curvature are done for the beams strengthened with non - prestressed and pretressed cfrp sheets, base on the assumption of plane section, non - bonding slip and non - peeled destroy. secondly, nolinear finite elemeant analysis by ansys are done for the beams strengthened with prestressed cfrp sheets base on the three assumptions before mentioned, the analysis are all done for the relation curve between load and displacement, the distribution of material stress, the distribution of cracks. lastly, calculation formula of flexural capacity and deflection are proposed
）的全過程關系曲線。其次基於上面的三個假定，選擇合理的本構關系，利用ansys通用有限元分析程序對預應力碳纖維布加固梁進行非線性有限元分析，分析了加固梁的荷載-撓度關系、材料的應力情況、裂縫的分佈情況等。最後提出了承載力計算公式和正常使用狀態下撓度計算公式。 -
Interlaminar stress analysis of composite laminates subjected to in - plane loading
受面內載荷的層壓復合材料的層間應力分析 -
We may use the plane stress analysis for determining deflections in the midplane of the beam.
我們可以用平面壓力的分析方法來確立梁中間面的撓度。 -
By the way of stress analysis of bank slope, the positions of different laying depths are found, where the stress state is close to that of semi - infinite plane. then the shape of stress slack zone can be confirmed to acquire the safe rule of laying foundation for bridge design. and the engineering applications prove its correctness
本文通過岸坡應力分析法，找到不同深度下基礎附近應力接近半無限平面（即消除岸坡邊界影響）的位置，從而確定應力鬆弛帶形態，為橋梁設計提供基礎安全埋置準則，而工程應用結果也驗證了該方法的正確性。 -
In other words, the process of analyzing relaxation zone related to one safety factor can also be regarded as the process of searching potential slide surface related to the same safety factor. elastic wedge model is used for analysis of relaxation zone of cutting homogeneous slope. on the basis of elastic plane - strain theory, the relaxation zone can be calculated according to mohr - coulomb or drucker - prager law and single tension intensity principle which are both related to one safety factor after three - dimensional stress field of the cutting slope is got
提出均質邊坡開挖鬆弛區可以用彈性理論中的楔形體理論分析，在平面應變問題的基礎上得到開挖坡體的三向應力場之後，可運用考慮安全儲備后的強度條件（主要為摩爾?庫侖或德魯克?布拉格強度準則和單軸抗拉強度準則）解析坡體分步開挖過程中的鬆弛區范圍，給出了具體的計算步驟，並通過算例較詳細地說明了操作過程。 -
In the paper, static and dynamic triaxial tests were conducted on fiy ash at shanmenxia longgou ash dam, and the static and dynamic parameters of fly ash were obtained. thirdly the 2 dimensions static analysis of the ash dam was conducted based on biot ' s consolidation theory and duncan ' s nonlinear stress - strain model. finally the plane dynamic behaviors of the ash dam during earthquake of intensity 7 were analyzed based on the exponent function model of excess pore water pressure aroused by earthquake, which is put forward in the paper, and equivalent visco - elastic dynamic fem model and principle of effective stress
本文結合實際工程，對三門峽火電廠龍溝灰壩的築壩粉煤灰進行了靜、動三軸試驗，確定了該壩粉煤灰的靜動力學指標；然後根據比奧（ biot ）固結有效應力原理，採用鄧肯（ duncan ）非線性應力應變模型，對該灰壩的二維靜力應力和變形狀態進行了分析；最後利用本文提出的地震超靜孔壓指數函數模型，採用等價粘彈性動力有限元方法，對該灰壩在地震作用下的動力穩定性進行了分析評述。 -
The mathematic model of the ultra - thin spherical mirror is to be treated as elastic thin shell. then the predigested model, i. e., bended beam, used in qualitative analysis was proposed, and its deflection and stress formulas under the freely supported condition were set up. based on an off - axis aspherical primary mirror, the relationship of aspherical surface error ( rms ) in tangential plane with bended beam ’ s radius r, position s of concentrated load p and geometry length l of arc was analyzed
根據這一設想，本文建立了超薄鏡的數學模型?薄殼，並提出了強制力作用下超薄鏡的簡化模型?曲梁，推導了曲梁在簡支情況下受力變形的撓度公式，並結合一個實例，計算出曲梁變形后與所需非球面的面形殘差（ rms ）在子午方向與曲梁弧長l 、曲梁半徑r及集中力位置s的關系及滿足面形精度的r和s范圍，分析了弧矢方向的rms ，得出了同時滿足子午和弧矢方向面形要求的l 、 r和p 。 -
4. combined with the design of the three gorges prestressed concrete penstock with steel liner in the three gorges power. station, the consistence among the results of theory calculating, the analysis of plane finite element and three dimensional finite element is proved, the concrete stress distributions of the prestressed concrete penstock are analyzed with different steel liner thicknesses, different crack resistances, different concrete thicknesses and different initial radial gaps between steel liner and concrete. the feasibility of the design method of prestressed concrete penstock with steel liner is proved
結合三峽電站鋼襯預應力混凝土聯合受力壓力管道的設計方案選擇及論證分析，對比分析了鋼襯預應力混凝土壓力管道理論計算、平面有限元和管壩整體三維有限元分析結果的一致性，確定了管道結構在不同鋼襯厚度、不同抗裂度要求、不同外包混凝土厚度及不同鋼襯與管壁混凝土間初始徑向間隙等因素影響下的內力分佈規律，驗證了鋼襯預應力混凝土壓力管道的設計方法。 -
This paper, in allusion to damage of expansion joint of bridge, introduces a sort of new structure of jointless device - semi - integral abutment jointless bridge, and establishes model of general structure finite element of this bridge, and in details analyses its qualities of stress. the model considers the interaction of superstructure - substructure - soil. resistance of the soil behind abutment adopts still soil pressure and elastic resistance when the temperature rising, but active soil pressure when dropping. analysis of qualities stress of bridge includes of action of dead load, car load, temperature load of season character. taking an 100m length pc semi - integral abutment jointless bridge as instance, the paper establishes the model of plane frame by applying large common software - anasys, and analyses it by elastane and large deformation to imitate character of stress and deformation of general bridge. at the same time corresponding models of finite element of joint bridge and integral abutment bridge are established, and unique stress and performance of structure of semi - integral abutment jointless bridge are researched by comparing and analysing character of three different models under same loading, and controlling factor of design and constitution are generalized. in conclusion, for semi - integral abutment jointless bridge, on one hand shear, moment and deflection of the main beam and axis force of substructure are approximate with that of joint bridge, and integral stifmess of structure is increased and damage of expansion joint is eliminated, on the other hand there is axis force in main beam, shear and moment of substructure are bigger than that of joint bridge. in all this type of jointless bridge has rational stress and is worth of application and popularization
半整體式橋臺無縫橋梁計算模型考慮了上部結構-下部結構-土的共同作用；臺後土抗力升溫時採用靜止土壓力加彈性土抗力，降溫時採用主動土壓力；分析橋梁受力性能時考慮了結構自重、車輛荷載和季節性溫變荷載的作用。以一座橋長100mpc半整體式橋臺無縫橋梁為實例，採用大型通用軟體ansys建立平面框架模型，進行彈性、大變形分析，模擬全橋受力和變形特點；同時建立與此對應的有伸縮縫橋梁和整體式橋臺無縫橋梁有限元模型，通過三種橋型同步加載對比分析，研究半整體式橋臺無縫橋梁獨特的受力特點和結構性能，總結其設計控制因素和構造要求。通過本文研究知：半整體式橋臺無縫橋梁主梁的剪力、彎矩、撓度和下部結構的軸力與梁式橋相近，結構整體剛度增大，併除去了伸縮縫病害；但主梁增加了軸力，下部結構剪力、彎矩較梁式橋大；綜合分析是一種受力合理有實踐和推廣價值的橋型。 -
To completely avoid producing elements jointed at their corner nodes and checkerboard patterns, which frequently occur when the topology optimization of plane continuum is studied, the theory of topology analysis of plane continuum in topology optimization process and the simple algorithm for programming are studied. according to algebraic topology theory, the boundary of elements and plane continuum are operated as a one - dimensional complex. by use of the adjacency vector in graph theory, the structural topology is described and the topological operation is achieved on a computer. by above, the structural topological feature in the evolutionary process is gained. these methods are effcient and reliable. under topology constraints, according to the results of stress analysis, by deleting elements and moving nodes at the boundary, more satisfactory results can be gained by using a few numbers of elements and iterations. to demonstrate the efficiency of these methods, solutions including some well - known classical problems are presented
避免目前平面連續體結構拓撲優化過程中經常出現的單元鉸接以及「棋盤格」等現象，研究了連續體結構拓撲優化過程的拓撲分析方法，以及在計算機上實現的簡便演算法.根據代數拓撲理論，單元及連續體的邊界作為1 -復形進行運算.利用圖論中的鄰接向量概念，在計算機上實現了結構的拓撲描述及拓撲運算，得到了結構在拓撲演化過程中的拓撲特性，方法簡單、可靠.在一定的拓撲約束下，根據應力分析結果，採用刪除單元、單元退化、移動節點等方法，可以用較少單元得到更為滿意的結果，提高計算效率.為演示方法的有效性，給出幾個包括常見經典問題的解答 -
From above analysis, the thesis gets conclusions as following : ( 1 ) the frequencies of multi - tower building are so dense and the coupling in each mode is so evident that the cqc method instead of srss should be used to calculate the seismic action effect ; ( 2 ) torsion effects is distinct between the modes of asymmetry multi - tower structure and it is necessary to take translation - torsion coupling into account ; ( 3 ) the effect of the enlarged base rigid on the seismic properties is very big, the rigid ratio of the enlarged base to towers in asymmetry multi - tower structure should be designed in a proper range ; ( 4 ) the distribution of plane rigid is asymmetry because of the asymmetry layout of towers. the torsion effects of structure not only result in large torsion internal force in vertical element resisting lateral displacement, but also make large influences on the stress of transfer plate and near floors, thus it is necessary to strengthen those floors
通過上述分析，得出以下主要結論：多塔樓結構存在頻率密集現象，各振型間耦聯效應明顯，地震作用計算應採用cqc組合原則而不能簡單地採用srss組合原則；非對稱多塔結構的振型中，扭轉作用明顯，平扭耦聯效應值得考慮；裙樓剛度對整體結構的抗震性能影響很大，非對稱多塔結構宜控制裙樓與塔樓剛度比在適宜的范圍；非對稱多塔易導致平面剛度分佈不均勻，結構扭轉效應不僅在豎向抗側構件中引起較大的扭轉內力，對轉換層樓板應力有較大的影響，且延續至相鄰樓層，對相應樓層均應採取相應的加強措施。 -
Abstract : the formulae of plane stresses on inclined plane are expressed in complex number form. this method has both the advantages of analytic method and graphical method in stress analysis
文摘:把平面應力狀態斜截面上的應力公式用復數形式表達，並用其進行應力分析，兼有解析法和圖解法的優點。 -
3. the finite element method in spatial sluice structure calculation was researched. regarding the whole sluice and foundation as an integral body, the static and dynamic analysis of the structure was made, and the spatial stress was transformed into plane stress according to demands and habits of the project design
3研究了空間水閘結構計算的有限元法，將整個水閘和地基作為一個整體，進行靜動力分析，並把空間應力轉換為符合工程設計要求和習慣的平面內力，導出了相應的計算公式。 -
Comparison and analysis of the stress distribute rule and deformation of two kinds of combination dies that with flat end plane or with oblique end plane cavity come to conclusion that the oblique end plane combination die is of higher intensity
摘要通過對平、斜端面組合凹模在預緊及合成兩種狀態下應力和變形位移的對比分析，得出了斜端面組合凹模的應力分佈規律，指出在其他條件相同的情況下，斜端面組合凹模具有更高的強度。 -
In order to overcome the drawback of classical fixed boundary models, a finite element model of structure - foundation system has been suggested in this paper for the earthquake response analysis of frame structures, such as beams and columns, are described with plane - stress 4 - node quadrilateral parametric element, and foundations with plane - strain 4 - node quadrilateral parametric element
為了正確處理結構?地基動力相互作用，改善以往固定邊界模型將地震能量全部陷入結構計算模型的不合理狀況，以框架結構為例提出了建築結構地震反應分析的有限元模型及透射邊界，模型中採用四結點平面應力等參單元模擬上部框架結構的樑柱構件。 -
When the acoustic logging technique is used to determine the stress release rebound tension fissure plane of the dam foundation in the construction of such dam foundation, we should make an analysis of the anomaly and the geophysical trend surface so as to guarantee the reliability of the geophysical data and guide the change of the design and organize the construction
摘要在壩基施工過程中，利用聲波測井方法確定壩基卸荷回彈張裂面應進行相對異常和地質物探趨勢面分析研究，才能保證物探資料的可靠性及直接指導設計變更和施工組織。
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