initiation of fracture 中文意思是什麼
initiation of fracture
解釋
斷裂的引發- initiation : n. 1. 開始，創始；起爆。2. 教導，指點，啟發。3. 正式加入；入會儀式，入黨儀式。
- of : OF ＝Old French 古法語。
- fracture : vt. ,vi. （使）破裂；（使）折斷；（使）斷裂。n. 1. 破裂，折斷，斷裂。2. 裂痕，裂縫，裂面。3. 【醫學】挫傷，骨折。4. 【礦物】斷口；【地質學；地理學】斷層。
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Research about ctod and its components 8 ", " shows that the direction angle of ctod vector is identical with the fracture angle of void - mode fracture, which is obtained through experiments, and it is also identical with the result got by peak value line of stress triaxiality. besides, 8 i " was compare with vgc as criterion for initiation of void - mode fracture
對裂紋尖端張開位移ctod及其張開型分量~ 1和剪切型分量~ 11的分析表明，在試件發生韌窩型斷裂時，按照圓弧裂紋中ctod矢量的垂直方向預測的斷裂角與試驗測得的斷裂角符合較好，與三軸度脊線預計的結果也比較一致。 -
In conclusion, the research of this thesis indicate that the behavior of crack with a arc - tip is the same as that of a spiculate crack, but its load of fracture initiation is higher than the latter
總之，本文的研究結果表明，裂尖寬度為0 . 12mm的非尖銳裂紋的斷裂行為與尖銳裂紋基本相同，但起裂載荷較高。 -
Increasingly widely use of nonlinear viscoelastic materials, use of materials under extreme conditions, along with frequent occurrence of delayed catastrophic accidents, all these make the study a pressing problem of initiation and crack growth of nonlinear viscoelastic fracture
隨著非線性粘彈性材料的廣泛使用和材料在極端條件下的使用，在長期荷載作用下頻繁出現的延遲性的災難性的事故使得非線性粘彈性的裂紋起裂時間和裂紋擴展速度的研究成為亟待解決的問題。 -
In order to study the influence of evolvement of permeation character induced by mesoscopic structural characteristics on macroscopic mechanical behavior and fracture mechanism, a nonlinear constitutive equations describing the relationship between damage of rock and seepage is proposed based on mesoscopic damage mechanics and biot seepage mechanics theory and coupling system of flow & solid in rock failure process analysis, f - rfpa2d, is developed to simulate the variation of permeability as well as coupling mechanism between seepage and stress during the initiation, propagation and coalescence of cracks in rock. this study also extends the research field of original rfpa2d
為了分析細觀結構特性變化引起滲透性演化對宏觀力學行為的影響，並進行滲流應力耦合作用下巖石破裂機制的研究，本文基於細觀損傷力學和biot經典滲流力學，建立了巖體損傷非線性本構方程和滲透率關系模型，開發出巖石破裂過程滲流-應力耦合分析系統（ couplingsystemofflow & solidinrockfailureprocessanalysis簡稱f - rfpa2d ） ，拓寬了原有程序rfpa2d的研究領域。 -
Meso mechanical analysis of effect of initial damage on ductile fracture initiation toughness of steel
初始損傷對鋼的延性起裂韌性影響的細觀力學分析 -
Based on lots of experiments, by combining the progress in mesomechanics with fea computation and analysis, this thesis investigated many parameters " effect on crack with an arc - tip in plain mixed - mode fracture, and compared existing criteria for fracture initiation, fracture direction and fracture mode transition
本文主要的工作是在試驗的基礎上，結合細觀斷裂力學當前的研究進展，通過有限元計算和模擬分析，研究了平面復合型斷裂中各種力學參量對圓弧尖端裂紋斷裂的影響，比較分析了現有的起裂判據、斷裂擴展方向的判定方法以及斷裂模式的轉換條件。 -
The network carbide and acicular martensites that existed in the microstructure of the root grooves of the spline due to improper carburating and quenching process of the shafts, led to the initiation and propagation of the intergranular microcracks and were the main reason that caused the early fracture of the shafts
由於滲碳淬火工藝不當，在二軸花鍵槽根部的組織中產生了網狀破化物和粗大的針狀馬氏體，在外力作用下形成沿晶顯微裂紋並擴展，是導致二軸疲勞斷裂的主要原因。 -
In short, the analysis of arc - tip fracture shows that : the initiation of void - mode fracture can be judged by vgc criterion, or by j ". according to sx criterion ; fracture direction of void - mode fracture can be determined by ctod and peak value line of stress triaxiality. the mesomechanics mechanism of shear - mode fracture need further study, and analysis found direction of plastic belt is consistent with the direction of shear - mode fracture
綜上所述，本文通過對圓弧尖端裂紋的分析表明：對于韌窩型斷裂的起裂，可以依據-復合型斷裂的sx準則按照i ~ 1來預測起裂載荷，也可用v _ （ gc ）判據來預測起裂載荷，二者結果相近；對于韌窩型斷裂的斷裂角，用ctod矢量方向和三軸度脊線方向判斷均和試驗結果基本。 -
Fracture mechanics toughness tests - method for determination of fracture resistance curves and initiation values for stable crack extension in metallic materials
斷裂機械韌性試驗.金屬材料穩定裂紋延伸的抗斷裂曲線和初始值的測定方法 -
Initiation of fracture
斷裂的引發 -
According to the observed results near the fracture surfaces, the orientations of the fatigue crack initiation and propagation were investigated to study the mechanism of multiaxial fatigue crack propagation
根據薄壁管拉扭復合載試件斷口附近表面觀測結果，統計其裂紋擴展的位向，研究多軸疲勞裂紋萌生及擴展機理。 -
The result shows that the fracture has appeared fatigue feature, with initiation sites at the root grooves of the spline of the shafts
結果表明，軸的斷口具有明顯的疲勞特徵，疲勞源位於二軸花鍵槽根部。 -
Based on the histories of stress and strain calculated by the finite element simulation, the initiation of fracture is predicted by means of the ductile fracture criterion
在有限元模擬獲得的應力應變場基礎上，應用韌性斷裂準則預測板料斷裂的發生。 -
The erosion effect damage variable can be defined in many ways, while the one defined in wave velocity by author is more appropriate for deep buried tunnel surrounding rock. for the evolution of hydraulic damage under complex mechanics environment, the extension of branch fracture means the initiation of evolution, and the hydraulic damage evolution equation can be deduced by the method of fracture mechanics
水化-水力損傷巖體中損傷變量可以採用多種方法定義，在分析隧道巖體內部結構時，彈性波速是比較容易量測的巖體物理量，可用其來定義巖體中的腐蝕損傷變量。
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