plastic failure 中文意思是什麼
plastic failure
解釋
塑性破環-
It can be seen from the results that the control beam had good plastic property in the static failure experiment after two million fatigue loading circles. all specimens with corroded main bars were failure under the fatigue loads within one million fatigue circles. fatigue lifespan of reinforced concrete beam was sharply shortened after main bars corroded in it and the beam was destroyed bristly without any prediction
試驗結果表明，振動測試不能夠對銹蝕鋼筋混凝土梁的疲勞破壞做出可靠的預測;對比梁在經過200萬次疲勞循環加載后的靜力試驗中仍表現出良好的延性破壞特徵;銹蝕梁在100萬次疲勞循環內均因主筋疲勞斷裂而破壞;主筋銹蝕使得梁的疲勞壽命急劇縮短;梁發生脆性破壞而沒有徵兆。 -
Meanwhile, by using delaminating combination finite element method and macro finite element analysis methods, the paper present two kinds of analysis programs. based on the aforementioned analysis program, the failure form, distribution of plastic hinge, load - carrying capacity, displacement and ductility characteristics are investigated to reveal the failure mechanism and the failure proceeding under seismic effects. the results are in good agreement with the test results, indicating the precision of the aforementioned two programs is satisfiable to the practical engineering design
分別採用分層組合式有限元和宏觀有限元分析方法，編寫了2種鋼筋混凝土中高帶邊框柱剪力墻結構的彈塑性有限元分析程序，同時利用上述2種分析程序，研究了模型結構的破壞形態、塑性鉸的分佈、承載力、位移及延性性能等特性，探討了這類結構在地震作用下的破壞全過程與破壞機理，得到其主要受力特性和抗震性能的一般規律，所得結果與試驗值吻合較好，表明上述2種程序分析結果的精度均可滿足實際工程的設計要求，因此可用於這類結構的抗震性能分析與設計。 -
Because of its resistance to electrochemical erosion, low manpower demand for application and minimal changes in geometrical dimensions of the member, the method has been found to be economical and efficient for application, based on the previous work, we designed and conducted experiments of 10 reinforced concrete ( rc ) slabs strengthened with the common carbon fiber reinforced plastic ( cfrp ) ; and investigated the effect, failure mechanism and theory
由於具有耐腐蝕、施工簡便快捷、幾乎不改變構件原有尺寸等特點，得到廣泛的應用，具有良好的經濟效益。在前人的工作基礎上，我們設計、試驗了10採用碳纖維布加固的鋼筋混凝土單向板，探討了加固單向板的加固效果和理論分析方法。 -
Relating closely to the main problem of the high sidewall and wide span underground cavities excavation stability of xiluodu hydroelectric project, the evolution characters of geo - stress field in deep - cutting gorge and the whole features of the stress field, strain field and plastic failure zone around the underground chambers after excavation are studied systematically in the dissertation, based on a great deal of data gathered in field investigation and taking the flac3d v2. 0 software as basic computation tools. meanwhile, in the course of research, the new methods of dynamic numerical simulation are summarized and applied. furthermore, the effects of rock mass qualities, initial geo - stress field and excavation procedure on surrounding rock mass stability are discussed
本文緊密結合溪洛渡水電工程大跨度、高邊墻復雜地下廠房洞室群，施工開挖過程中和開挖后圍巖穩定性研究這一重大課題，在詳盡的野外地質調查工作和對大量基礎地質資料的整理與分析基礎上，以目前國際工程地質界公認的最新通用軟體flac ~ （ 3d ） 2 . 0版作為基本計算工具，從整個壩區地應力場的研究開始，通過動態數值模擬分析這一新的模擬思路，系統地研究了深切峽谷區地應力場多階段的特徵和演變規律，進而對左、右岸地下廠房洞室群開挖全過程中圍巖應力場、變形場和塑性破壞區的變化特徵，進行了全過程動態數值模擬研究，並詳細討論了圍巖質量、初始地應力場、施工開挖順序對大型地下洞室群圍巖穩定性的影響。 -
Pseudo - static force testing of 1 : 2 scale models of a steel frame with dog - bone connections is first carried out in china in order to obtain elastic - plastic behavior of dog - bone connections steel frames under cyclic loading as well as to analyze collapse characteristic after structural ultimate strength has lost. the influence of dog - bone connection on the coming order of plastic hinges and failure characteristic of steel frame, and the influence of dog - bone ' s shape and position on the behavior of structure is obtained
通過試驗考察了狗骨式連接平面鋼框架結構在循環荷載作用下的彈塑性性能;了解狗骨式連接對結構塑性鉸出現的順序以及結構破壞形態的影響;了解節點處與狗骨處應力發展狀況，探討狗骨削弱的形狀和削弱位置對節點性能的影響。 -
The ship ' s hull is a thin - walled box girder structure composed of stiffened panels. the overall failure of a ship hull girder is normally governed by buckling and plastic collapse of the deck, bottom, or sometimes the side shell stiffened panels. therefore, the analysis of buckling and ultimate strength of ship panels in deck, boltom, and side shells is very important and necessary for the safety assessment of ship structure. in stiffened panels, local buckling and collapse of plating between stiffeners is a basic failure mode, and thus it would also very important to evaluate the buckling and ultimate strength interaction of plate elements under combined loads
船體梁的總體失效通常取決于甲板、船底板，有時候是舷側加筋板的屈曲和塑性破壞。因此，對于衡量船體結構的安全性而言，對甲板、底板、舷側板進行屈曲和極限強度分析是十分重要且必須的。對于加筋板而言，加強筋間的板格之局部屈曲和失效是最基本的失效模式。 -
After investigating the influence of ntff on the global ductility of the staggered truss steel framing, it show that ntff lead to decline of stiffness and lead to a bad failure mode which plastic hinges always formed in base of columns. so it ' s suggested that ntff should be avoided in the region of seismic fortification intensity is 8
6 ）通過桁架不落地對于交錯桁架體系整體延性的影響作用的研究，指l } }柑架不落地帶來了交錯杭架體系抗側剛聲夏的廠降，少補濘致抗震中不利的破壞模式的產『 -
I. a mtil ( iaxial elastic - plastic hardening - sofling constitutive model of concrete is proposed iii order to offer a nonlinear material model of concrete for space restoring force analysis of reinforced concrete members taking into account the softening behavior of concrete. the concrete material model is incorporated the elastic - plastic hardening fracturing constitutive model of concrete with the plastic - fracturing theory of concrete, modified without defining two loading functiomis, and based on five parameter power function failure criterion proposed by guo zheng - hai etc from tsingliua ( jniversity, or three parameter unified strength theory proposed by yu mao - hong from x ian iiaotong university
1 、將砼彈塑性硬化斷裂本構模型與塑性斷裂理論結合起來，並加以改進，但無需定義兩個加載面，以清華大學過鎮海建議的五參數冪函數或以西安交通大學俞茂宏建議的，參數統一強度理論作為砼的強度破壞準則，建立了砼多軸彈塑性硬化松馳本構模型，能為鋼筋砼構件空間恢復力分析提供砼非線性材料模型，並能反映砼材料的軟化段。 -
With improvement of material composition and processing, the failure modes demonstrate predominately elevated wear and plastic deformation, and no earlier failure occurred, leading to a considerable improvement of service life and a stable number of 6000 ~ 7000 times, 80 % more than forging steel dies
經改進材質及工藝后，熱磨損、塑性變形為主要失效形式，而未出現早期斷裂失效，壽命得到明顯提高，穩定在6000 ~ 7000件，高於鍛造模具鋼80 %以上。 -
And that, the variable regulations of stress field, strain field and plastic failure zones in the surrounding rock mass of the underground cavities are summarized for the right and the left bank of underground chambers
全面總結了溪洛渡水電站左、右岸地下廠房洞室群圍巖應力，變形和破壞區的分佈特徵和變化規律，為洞室群穩定性評價和工程施工設計提供了基礎資料和理論依據。 -
And the variation characteristics of stress field, strain field and plastic failure zones in the surrounding rock mass of the underground cavities are summarized, which provides basic information and reference for the evaluation of underground cavities stability and project construction
總結了地下洞室群圍巖應力、變形和破壞區的分佈特徵和變化規律，為洞室群穩定性評價和工程施工設計提供了基礎資料和參考依據。 -
During elastic - plastic stage, the wall was equaled to a rigid frame - oblique compression bar model. during failure stage, the wall was equaled to a beam - hinged frame
彈性階段一一復合材料等效彈性板模型;彈塑性階段，一捆lj架斜壓桿模型;破壞階段一一梁鉸框架模型。 -
To prevent premature failure of the reinforced plastic fiberglass sucker rod, high quality products should be purchased, proper wells should be selected, the rod string design should be based on the stress range chart and operation and management should be carried out according to requirements
為防止玻璃鋼抽油桿早期失效，應嚴把產品進貨質量關；正確選擇油井；按應力范圍圖進行玻璃鋼桿柱設計；按要求作業施工；完善生產管理措施。 -
Coupling beams between openings are the main plastic energy dissipation elements of coupled walls, but whether short coupling beams could ensure that shear failure would n ' t take place before coupling beams have reached certain displacement ductility or not, is still a problem of engineering which has n ' t been solved and is one of the critical problem of the code for design of concrete structures which remains to be solved
洞口連系梁是聯肢剪力墻的主要塑性耗能構件，但跨高比較小的連梁是否能保證在達到一定的位移延性之前不出現剪切失效，仍是目前我國工程界未解決好的問題，也是我國《混凝土結構設計規范》遺留下來有待解決的關鍵問題之一。 -
The main contents of the paper are : ( 1 ) review the state and art for fiber - wound vessel with metal inner lining ; ( 2 ) provide a method to present the technical features including wound process, equal stress dome and fiber gathering at the dome etc. ( 3 ) establish a finite element analysis model considering nonlinear physical and geometrical effects and develop a equivalent constitutive relation for winding graphite fiber reinforced plastic layers ; ( 4 ) set up a failure criterion for the inner metal lining and winding graphite fiber reinforced plastic layers ; ( 5 ) develop a corresponding engineering analysis code based on the commercial software ansys ; ( 6 ) investigate the plastic deformation and residual stress in the inner lining due to winding tension and pre - tension, and stress distribution of the composite vessel under service loading case
本文旨在為具有金屬內襯的纖維纏繞復合容器的參數設計提供分析模型、方法及工程軟體。論文主要內容是： （ 1 ）對復合容器分析國內外研究的概述； （ 2 ）復合容器的幾何表徵方法及工藝中若干力學問題； （ 3 ）復合容器結構分析的物理和幾何非線性有限元列式及其纖維層的等效本構關系； （ 4 ）復合容器的破壞類別； （ 5 ） ansys程序的二次開發； （ 6 ）典型復合容器的數值討論。本論文工作將對工程界復合容器設計和分析工作者具有參考價值。 -
( 4 ) according to the new methods of dynamic numerical simulation analysis and resting on the engineering geological conditions of surrounding rock mass and the project design, the three numerical simulation results are obtained, from which the author analyze systematically the distribution features of stress field, strain field and plastic zone in the surrounding rock mass of the underground cavities after the excavation and also the variable features of stress field, strain field and plastic failure zones in the surrounding rock mass of the underground cavities in the course of excavation
（ 4 ）按照動態數值模擬新思路，以地下洞室群圍巖的工程地質條件和工程設計方案為依據，系統研究了大跨度、高邊墻地下洞室群開挖完成後圍巖的二次應力場、變形場和塑性破壞區的分佈特徵，開挖過程中圍巖的應力場、變形場和塑性破壞區的變化特徵。 -
Comparative study on elastic - plastic failure process of rock specimen by means of numerical simulation
巖石試樣彈塑性破裂過程數值模擬比較研究 -
Secondly, another 2d - fem analysis is made on a practical engineering of foundation pit excavation supported by soil - nailed system. then the different distributions of tensile stress, shear stress, plastic failure zone and horizontal displacement obtained by analysis for non - supporting and soil - nailed supporting step - by - step excavation are compared with each other. some conclusions about mechanism of soil - nailed supporting system are reached from above comparisons
在計算方法與本構模型研究中，重點對ansys中基於drucker - prager彈塑性本構模型的巖土體d - p材料作了分析，指出了此材料沒有對拉應力限制的缺陷並提出在計算過程中必須密切注意拉應力的大小及分佈；同時提出了基坑分步開挖與支護的數值模擬過程。 -
And that, the variable regulations of stress filed, deformation field and plastic failure zones in the surrounding rock mass of the underground cavities are summarized. based on the analysis of the effects of rock mass qualities on surrounding rock mass stability, the control effect of rock mass qualities about stability of surrounding rock mass was studied
總結了地下洞室群圍巖應力、變形和破壞區的分佈特徵和變化規律，並通過對比分析圍巖質量對其穩定性的影響，闡明了巖體質量對圍巖穩定性的控製作用，為洞室群穩定性評價和工程設計施工提供了基礎資料和理論依據。 -
This article analyzed the stresses in the slag crusher shell with large openings in accordance with the principles and methods of analytic design ( elastic stress analysis and plastic failure rules ) using finite element analysis method and ansys program, not only a factual engineering problem is solved, but also come to the general conclusions by examination of the effects of some variables
隨著生產的發展和科學技術的不斷進步，煉油、化工、化肥等裝置不斷向著高參數（高溫、高壓） 、大型化的方向發展，原有的以經驗公式為基礎的常規設計方法（ designbyrules ）已經不能滿足需要。以應力分析為基礎的設計變得越來越重要。有限單元法（ finiteelementanalysis ）已成為結構分析最重要的一種手段。
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