shear fracture 中文意思是什麼

shear fracture 解釋
剪斷裂
  • shear : vt vi (sheared 〈古語〉 shore; shorn sheared)1 剪(羊毛等);修剪(樹木);剪(呢絨的)長毛。2 ...
  • 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。
  1. The ground stress distribution within southern margin of junggar basin assumes that its compressing stress increases vertically with depth and compatible with the structural layers , which can be divided into deep compressive belt , medium shear zone and shallow tensile fracture belt

    盆地南緣區域地應力分佈規律表現為縱向上壓應力隨深度增加而增大,並與構造層配伍,可分為深層擠壓帶、中層剪切帶、淺層張裂帶。
  2. The following conclusions are gained : ( 1 ) the located shear band prongs the ligament near the top crack tip and the structure may occur shear - mode fracture at the angle of 155 ? to crack when load is 87. 92mpa ; the mode of fracture of the flange joint structure is not possible to be void - mode ; ( 2 ) it is proved that loading and then unloading repeatedly can not increase the possibility of invalidation of the structure when the times of loading and unloading are not too more when load is operating pressure ; the structure is safe when the vessel is operating ; ( 3 ) in the fe model of the thesis, not considering the influence of water pressure test which is in the process of fabrication of vessel in fe results in larger deviation in analysi

    得出了以下結論:在8792mpa的載荷下筒體一封頭連接結構處的集中剪切帶貫穿韌帶,可能發生沿與原裂紋線成155 「角方向剪切型斷裂;筒體一封頭連接結構不可能發生韌窩型斷裂; ( 2 )在工作壓力下進行次數不多的反復加、卸載,結構不會破壞,也不會喪失安定性:結構在工作狀態下是安全的; m在本文的彈塑性有限元模擬計算中,對于裂紋尖端進行力學分析時,不考慮壓力容器製造過程中水壓試驗的影響,將導致計算結果出現較大的偏差; ( 4 )筒體完全屈服時的載荷為92石3mpa ,封頭完全屈服時載荷為86
  3. Abstract : based on the data obtained from field observations and deformation monitoring, this paper deals with the deformation and failure of a double - decked slope composed of soft rock strata in its lower part and hard - brittle rock strata in its upper part. it is demonstrated that the deformation of this kind of slopes is always initiated by the non - homogeneous rheological compression of the lower soft rock strata, leading to the tension fracture and toppling of the upper hard rock strata, and at last the sliding of the whole deformed body will be caused by the shear failure along the stress - concentration zone in the lower soft rock mass under the actions of the gravitational loading and infiltration water

    文摘:以現場考察和變形監測資料為依據,探討一個下部有軟弱基座,上部為硬脆性坡體的「二元結構」邊坡的變形破壞問題,揭示這類邊坡的變形總是以下部軟弱巖體的不均勻壓縮流變為先導,進而引起上部硬脆性坡體的拉裂與傾倒,最終通過滲入水的作用,使下部承載狀況已進一步惡化了的軟弱巖體,沿剪應力集中帶發生剪切破壞而導致整個變形坡體的下滑。
  4. In ecap route c, in order to accommodate the severe shear deformation the deformation form of lamellae cementite in pearlitic steel include periodical bending, periodical shearing and shearing fracture etc

    在c方式ecap變形中,珠光體鋼65mn中的滲碳體以周期性的彎曲變形,周期性的剪切變形,剪切斷裂等形式協調ecap的強烈塑性變形。
  5. Rock compression shear fracture inference of the earth ' s crust

    地殼巖石壓剪斷裂端倪
  6. Through the research on the crystallite of the composites modified with silicone coupling agent and pp - g - mah, research showed that the size of the crystallite and oriented crystallization had obviously influence on the mechanical performances. the sem results showed that nano - sio2 was dispersed well in pp, which promoted the matrix undergo shear yielding rather than brittle fracture

    通過對硅烷偶聯劑?馬來酸酐接枝聚丙烯共聚物作為界面改性劑改性pp微晶的研究,表明微晶尺寸變化與復合材料的力學性能有關;在界面附近形成擇優取向的結晶層,促使基體發生屈服變形,提高了復合材料的韌性。
  7. Fracture analysis of double periodical cracked piezoelectric materials under antiplane shear

    雙周期裂紋壓電材料反平面剪切問題斷裂力學分析
  8. Another is shear - model fracture which is thought that it is associated with dislocation motion ( shear + rotation ) of crystal at microlevel, fragmentation of solid at mesoscale level and large plastic strains at the macroscopic level

    剪切型斷裂在微觀上與晶粒內或晶粒間的滑移和位錯有關,細觀上與集中變形帶中的微剪切面集中有關,宏觀上則與結構內的集中剪切帶有關。
  9. 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。
  10. Author thinks that the direction of the maximum plastic distortion along a constant radius around the crack tip may be considered as the direction of shear - mode fracture ( named pmax - criterion ) and the load when located shear band prongs the ligament in the front of crack tip is regarded as the limited load of shear - mode fracture. ( 3 ) the fad ( fracture assessment diagram ) of titled crack is proposed based on achievements of mesomechanics about i - ii complex ductile fracture of metal, and the titled crack is classified two kinds : void - mode fracture is assessed by fracture assessment curve, and shear - mode fracture by limited load. ( 4 ) using a fe program based on plantle - ressue theory to calculate some mesomechanical parameters, a flange joint structure of a high pressure vessel ( design pressure 31. 4mpa and the thickness of the hemispherical head is half of that of shell. ) is analyzed to determine whether the structure under operation pressure is safe or not, forecast the mode of potential invalidation and argue for the rationality of design of the structure

    試件的整體斷裂為剪切型,但在試件芯部裂尖鈍化區中部出現了韌窩型啟裂並有一定的擴展,說明局部較高的應力三軸度也會使韌窩型機制得以發展,但是不改變試件整體的剪切型斷裂模式;對韌性斷裂的剪切模式的細觀機理做了一定的探討,並且提出了含裂紋構件剪切型斷裂的宏觀判據:認為裂紋前方的集中剪切帶中與裂紋尖端等半徑處最大有效塑性應變出現的方向可以作為裂紋剪切斷裂的方向(可簡稱為_ ( pmax )準則) ,集中剪切滑移帶貫穿裂紋前方承載韌帶時的載荷可以作為極限載荷;本文運用金屬韌性斷裂細觀力學在一復合型韌性斷裂方面的研究成果,採用失效評定圖的形式,提出了傾斜裂紋的安全性評定方法的基本框架。
  11. Still, the change of vg parameter in the beam was investigated in this thesis. dilation of plastic belt in the beam is also studied. analysis show that there is clear direction during the dilation of plastic belt, which is similar with the path of shear - mode fracture

    分析表明塑性區的擴展有明顯方向性,據此得到的塑性區擴展方向與剪切型斷裂時的斷裂路徑比較接近,也與加載過程中韌帶區出現的集中剪切滑移線的方向比較一致。
  12. Epoxy - bonding a carbon - fiber composite plate to the tension face of concrete beam is an effective technique for repair and retrofit of concrete beams. in the first part of this paper, based on the fracture mechanics and the theory of beam, a theoretic model is proposed to analyze the shear stress in the adhesive between carbon - fiber composite and concrete. and then the closure - form solution for the shear stress distribution is drawn

    本文的第一部分基於斷裂力學與梁的基本理論,對碳纖維加固混凝土梁的粘結膠層以及粘結界面的剪應力分佈進行了理論分析,得出了其理論解析解;討論了碳纖維板的粘結長度、粘結厚度和粘結膠層的抗剪模量對界面剪應力分佈的影響。
  13. Cause analysis of flange plate shear fracture and reinforcement plan selection of a t beam bridge

    梁橋翼緣剪切斷裂原因分析與加固方案選擇
  14. In this paper , based on the method of spectral analysis and the theory of fracture mechanics, by using the broad - band digital data recorded by xi an telemetry seismic network, the stress drop and regional shear stress of moderate and small earthquakes in shanxi province are determined firstly

    利用西安數字地震遙測臺網記錄的寬頻帶數字地震資料,應用斷裂力學理論與譜分析方法,首次測定了陜西地區中小地震的應力降和區域剪切應力值。
  15. Compression shear fracture form of rock with close crack

    巖石閉合裂縫的壓剪斷裂形態
  16. Mechanisms of localized shear deformation and fracture in amorphous alloys

    非晶態合金的局域剪切變形與斷裂機制
  17. Principal compresso stress of mineralization epoch is measured 34 - 46ma by means of ae method, and its orientation is ew - trending by conjugate fracture, at last, the dynamic mechanics of the rhombic shear fault grid is analysised, ore - controlling law of the regional and ore - belt are determined, and combined with geophysical prospecting, ore - forming are forec ast

    利用巖石聲發射測得成礦期主壓應力值為34 - 46mpa ,以共軛破裂求得主壓應力方位為近ew向,分析了本區菱形剪切斷裂網格控礦構造應力場的動力學機制。提出區域和礦帶的成礦控礦規律,結合物探進行了成礦預測。
  18. Study on seepage characteristics of a single rock fracture under shear stresses

    剪應力作用下巖體裂隙滲流特性研究
  19. Finite element analysis of rock fracture characteristics under anti - plane shear mode loading

    加載下巖石斷裂特徵的有限元分析
  20. There is a criteria triaxiality, which is a material constant, which when triaxiality of material is larger than the fracture belongs to void - mode, and in reverse, belongs to shear - mode

    存在材料常數? ?臨界應力三軸度,材料內應力三軸度高於臨界值時,斷裂為韌窩型的,反之,為剪切型的。
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