plane strain element 中文意思是什麼
plane strain element
解釋
平面應變單元-
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。 -
The explicit finite element method ( fem ) based on the varying time - step was selected to analyse the dynamic roll - pass process ; the nodes on the leading face of the steady - state elements set was extracted and projected onto a plane to give the required mesh, also called the origin mesh ; the implicit fem was selected to analyses the inter - pass transient thermal process ; a geometric part from the mesh was generated and meshed by using the quadrilateral elements, a heat transfer analysis was selected to transfer the node temperature data ; a new model was created by using hexahedral elements, mapping the node temperature and the equivalent plastic strain on the integration points
利用基於變步長中心差分格式的顯式積分方法分析瞬態軋制過程；提取穩態單元集節點形成截面網格；利用隱式積分方法分析軋制道次間隙瞬態溫度場；對型鋼斷面進行平面四邊形網格劃分並映射節點溫度數據；利用六面體單元構建有限元分析模型，映射單元節點的溫度、積分點的等效塑性應變，進行數值分析。 -
Abstract : reviewed are five methods for the analysis of the penetration of jacked - in piles, namely, cavity expansion method, strain path method finite element method, slip line method and calibration model test. after analysis, it is pointed out that it is more rational to adopt sub - statical spatial axisy numerical formulas based on traditional plane - strain cavity expansion method in the analysis. after spatial closed - form solutions are obtained for soil movements, stresses and initial excessive pore pressures generated durihy pile penetration are found out. it is suggested that finite element analysis together with centrifugal model test be used in verifying the results
文摘:在分析飽和粘土中靜壓樁的貫入機理的基礎上，對靜壓樁沉樁分析的圓孔擴張理論、應變路徑法、有限元分析、滑移線理論和模型槽試驗等五種方法逐一進行評述，並提出在傳統的平面圓孔擴張理論基礎上加以改進，採用準靜態空間軸對稱方程組對靜壓樁貫入過程進行模擬，從而得出土體位移、應力、初始超孔壓的空間解析解，同時採用有限元分析、模型槽試驗相互印證的研究方法 -
Based on the results of testing site, some problems of vacuum preloading was analyzed by plane strain finite element method. the relative stable seepage velocity field can be produced with the pumping time. the depth of negative pore - water pressure transferring increases with the pvds length
最後，對真空聯合堆載預壓的施工工藝進行了研究，提出了在真空聯合堆載預壓的中期，出水量已相對較少，可適當減少開泵量，並可採用停抽結合的變真空能量法，在不影響加固效果的前提下，可以大大節省用電量。 -
According to the special stratum condition 、 soil parameter 、 pile frame system in the protecting landslide of hongtian jianfeng in yongan city in fujian province, compile a fem program of plane strain and analyze the interaction by nonlinear fem on intensity discount. in the program, duncan - chang model is applied to earth, elasticity model is applied to pile and rock ; goodman element is set between pile and rock - earth and applied to simulate sliding plane and flexible floor ; sequential pole elements with original stress are applied to anchor cable
在程序中土體採用了duncan - chang雙曲線本構模型，樁和錨固層以下的巖體採用了線彈性本構模型，並且在樁和巖土體間設置了無厚度的古德曼（ goodman ）單元，對于軟弱夾層和已知的滑裂面也採用古德曼單元模擬，錨索採用的是具有初始應力的連續桿單元模擬。 -
To know the rupture course and rupture range, we simulated the process of rupture on the overlaying soil with soft interlayer by plane strain finite element method in this paper
摘要為了了解軟夾層對基巖上覆土層破裂的影響，確定土層的破裂范圍，採用平面應變有限元法，模擬了有軟夾層的上覆土層在斷層錯動時的破裂過程。 -
In this thesis, the stress intensity factors of top - down cracks caused by loading are calculated using three dimensional finite element model and compared to the results of plane strain model
本文採用三維有限元模型分析了荷載作用下自上而下裂縫尖端的應力強度因子，並與二維平面應變模型分析的結果進行比較。 -
Plane strain finite element method is applied to incorporate the constitutive law. the code is able to simulate the coupled effect of consolidation and creep, interaction between soil and structure, and the complicated procedure of staged excavation. and this code utilizes a calculation method more reasonable than conventional ones
將平面問題有限元法用於基坑性狀的研究，研製了考慮土的流變與固結耦合作用、土與結構相互作用和模擬復雜的分步開挖過程的深基坑工程有限元分析程序。 -
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。 -
The internal force distribution of double - row anti - slide piles is studied by using plane strain finite element method ( fem )
摘要採用有限元法研究了考慮樁土相互作用的雙排樁的內力分配。 -
The stress intensity factors calculated using three dimensional finite element model are obviously less than the stress intensity factors calculated using plane strain model ( the ratios are about 30 % to 100 % ) and the distinctions increase with grew depth of cracks continuously
結果表明:三維有限元模型分析得到的應力強度因子明顯小於二維平面應變模型分析得到的應力強度因子（其比值約為30 %到100 % ） ，並且這種差別隨著裂縫深度的增加而不斷增加。
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