tension crack 中文意思是什麼
tension crack
解釋
龜裂海冰由於下面水的運動而-
The main results and academic contributions of the dissertation can be summarized as following : 1 ) for the difficulty to obtain the accurate analytical solution of the stress constraints around 3d cracks, detailed 3d fe analyses have been conducted to study the out - of - plane constraint factor tz around a straight through - thickness crack, a quarter - elliptical corner crack and a semi - elliptical crack embedded in an isotropic elastic plate subjected to uniform remote tension loading. the distributions of tz are minutely studied in the forward section of the cracks. strong 3d zones ( tz > 0 ) along the crack front were investigated despite the far field stress - free boundary conditions
全文主要研究內容和學術貢獻如下: 1 .針對一般三維裂紋端部場應力約束準確解析的困難，對均勻拉伸載荷作用下各向同性彈性板中穿透厚度中心直裂紋、半橢圓表面裂紋和1 / 4橢圓角裂紋進行了大量詳細的全場應力三維有限元分析，首次全面分析了非穿透裂紋端部場三維影響區范圍，給出了不同形狀三維裂紋前沿離面應力約束因子tz的數值解，並結合k場平面解給出了非穿透裂紋端部應力場k - tz雙參數描述。 -
Simulating tension crack of rock masses by block element method
巖體結構拉裂的塊體單元法模擬 -
A tension crack running parallel to the crest of the slope can also be included in the calculation.
平行於邊坡眉線延伸的張裂隙也可以包含在計算之中。 -
There is a crack in a plate of steel which makes the material in that area weak in tension and shear.
在鋼板上有一條裂縫，使其所在區域內的材料抗拉和抗剪性能減弱。 -
The stress intensity factors of a ring - shaped interface crack subjected to tension loading are shown in tables and graphics with variations of material combinations and crack dimensions
文中以圖表形式給出應力強度因子與材料組合和幾何條件之間的關系。 -
In addition, when there are tension crack and water in the slope, the critical inclination has relations with the position of crack and the level of water
此外，當邊坡中有張裂縫和水時，滑面的臨界傾角還與張裂縫的深度和水位高度有關。 -
The results of quantitative analysis showed that the pre - tension deformation reduced the fatigue crack propagation threshold and increased the crack propagation coefficient, and consequently decreased the fatigue resistance of the part with mechanical damage
定量分析表明：預拉伸變形降低了疲勞裂紋擴展門檻值，提高了裂紋擴展系數，從而使管線在機械損傷的部位疲勞抗力降低。 -
Standard practice for fracture testing with surface - crack tension specimens
用表面破裂張力試樣做斷裂檢測的標準實施規范 -
A way to avoiding crack or reducing crack width of concrete or reducing distortion of member is using prestressed concrete. the writer tried to make full use of the merit of the prestressed concrete and designed prestressed concrete mandril to control crack of structure. the prestressed concrete mandril, which was firstly applied high pressure on a small concrete bar, and then was made in concrete, so it would act as reinforced bar and resist load. in this thesis the writer designed 24 mmnbers and had experimental study of them, reached the conclusion that the effect of resisting crack of the prestressed concrete mandril was good when the load was not large, it can enhance the capacity of resisting crack and reduce the crack distance and crack width, but when the loads was large, the effect of resisting crack was not good, when we used the prestressed concrete mandril and reinforced bar together in member, the effect of resisting crack was very good. the writer analysed the adherence mechanism and wreck mechanism of the prestressed concrete mandril in anxial tension members, and according to the character of the prestressed concrete mandril, the writer constructed the bond model of it. then the writer introduced the analysis theory of crack including the bond - slip theory, the non - slip theory, the synthesis theory and mathematics stat method. the different theory had different theory base, they considered that the primary affection of crack width was different. in this test, the crack distance and crack width of members which placed reinforced bar were match to the compute value of the code gb 50010 - 2002 very well. to the members which
本文共進行了24根試件的試驗研究，得出了預應力混凝土芯棒能較大地提高構件抗裂承載力，在荷載小於預應力混凝土芯棒的開裂荷載時有較好的抗裂效果，能較大地減小裂縫間距和裂縫寬度，但是當荷載較大預應力混凝土芯棒開裂時預應力混凝土芯棒的抗裂效果不是很好，若將普通鋼筋和預應力混凝土芯棒一起使用時則有很好的抗裂效果。本文分析了預應力混凝土芯棒在軸拉試件中的粘結機理和破壞機理，根據預應力混凝土芯棒本身的特點，提出了預應力混凝土芯棒與后澆混凝土之間的粘結模型。然後本文詳細介紹了經典的裂縫分析理論粘結滑移理論、無滑移理論、綜合理論和數理統計方法，各理論有著各自不同的理論基礎，認為影響裂縫寬度的主要影響因素也各不相同。 -
The fatigue crack initiation life of x60 pipeline steel after pre - tension deformation
60管線鋼疲勞裂紋形成壽命的影響 -
Firstly, the parameters controlling ductile crack growth are gotten from the resistance curve result of standard 3 point bending specimen, then the resistance curves of the tension specimen for the welded joint with different strength mis - matching are predicted based on the cell model
首先由標準三點彎曲試件的阻力曲線，得出反映材料微觀損傷的特殊單元模型控制參量，再根據該參量對不同接頭強度匹配下雙邊缺口拉伸試件的阻力曲線進行了定量預測，其結果與試驗結果相當吻合。 -
The axial - symmetric ring - shaped interface crack problems are discussed under tension loading
摘要討論受拉伸載荷作用的軸對稱環形片狀界面裂紋問題。 -
As for traffic load, two situation were analyzed, symmetrical load and asymmetric load, in each of them, crack top ' s tension stress, shear stress and stress intensity factor were calculated, also the effect of structural parameters were analyzed
把交通荷載分為對稱荷載和偏載兩種情況，計算了裂縫尖端的拉應力、剪應力以及強度因子，並對路面結構進行了參數分析。 -
Pavement ' s temperature distribution field when suffering sudden temperature dropping was numerical simulated. crack top ' s tension stress and stress intensity factor caused by thermal stress were computed, structural parameters " sensitivity analysis were made as well
對路面突然降溫時的溫度場進行了數值模擬，計算了溫度應力作用下反射裂縫尖端的拉應力、應力強度因子，並對其進行了參數分析。 -
The maximal tension stresses in surface and base between induced crack have been obtained by parametric analysis
通過結構參數分析掌握了預切縫間面層、基層中最大拉應力的分佈規律。 -
Then, taking the maximal tension stress in surface and base and the stress intensity factor at the top of the induced crack as restraining indexes, method to determine the reasonable induced spacing has been determined
然後以預切縫上端應力強度因子、面層與基層內的最大拉應力為約束指標建立了合理預切縫間距的確定方法。 -
The results of the bearing bending experiment show that the steel plates can be combined with original beams by the construction gum, which makes the steel plates bearing bending together with original beams. at the same time the gluing steel plates enclose tensed concrete, improve the capability of resisting tension and limit the crack in the concrete
抗彎試驗結果表明：由於加固鋼板通過結構膠與原梁相結合形成組合構件，使鋼板與原梁一起參與受彎作用；同時，所粘鋼板包住受拉混凝土，改善了混凝土的抗拉性能，阻止並限制了混凝土中裂縫的發展。 -
Lefm plastics - determination of tension - tension fatigue crack propagation - linear elastic fracture mechanics approach
塑料.測定拉伸-拉伸疲勞斷裂延伸性.線性彈力斷裂機械 -
Test results showed that the fatigue crack propagation rare increased with increasing the pre - tension deformation degree, especially at the near threshold section
結果表明：隨著預拉伸變形量的增加，疲勞裂紋擴展速率提高，尤其是在裂紋擴展的近門檻區。 -
In the present study, experimental investigations were carried out on the fatigue crack propagation characteristics of x60 pipeline steel after different degrees of pre - tension deformation ( 5 %, 10 %, 15 % )
摘要用單邊裂紋試樣，研究了x60管線鋼經預拉伸變形量為5 % 、 10 %和15 %后的疲勞裂紋擴展特性。
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