拉開應力 的英文怎麼說
中文拼音 [lākāiyīnglì]
拉開應力
英文
zipper stress-
The dynamic tensile stresses of earthquake may balance or exceed to the precompression stresses due to static watef, this may arouse opening of joints along the normal direction. if the altemate actions of earthquake join, the joints may behave gradual opening and closing
由於地震作用時的動拉應力將抵消並超過靜載作用下的壓應力，導致橫縫面沿法向張開，加上地震的交變作用，橫縫可能會呈現反復的「漸開漸合」現象。The fem analysis for the three structures of sling screw - thread - based, namely the circle, rectangle and that with strengthen plate, and the tensile test for sling screw - thread - based in torpedo body show, that the bonding with strengthen frp plate between load - bearing metal parts and frp hull with hatch can reduce the stress concentration and significantly decline the local stress in frp hull with hatch. this structure can also be used in the similar produces. ( 3 ) the effects of parameters for bonding process on the adhesive strength and leakproof are discussed, such as the bonding interface reduce, bonding surface treatment, match of adhesive surface, protect for adhesive seam and so on
本文通過某型號雷體吊耳螺紋座結構的三種方案，即圓形昂耳螺紋座、長方形吊耳螺紋座、具有增強板的吊耳螺紋座的有限元分析及雷體吊耳螺紋座拉力試驗結果證明：金屬承力件與開口玻璃鋼殼體粘接採用玻璃鋼增強板補強，緩和了應力集中，使開口殼體局部應力明顯降低，類似的水下兵器用金屬承力件與開口復合材料殼體膠接均可採用此種結構形式。Our main products have j53, j54, j93, j67, j69 series double - disc friction screw press, brick press, series j55 clutch type screw press, mp high speed forging press, as well as the product repair and the spare parts manufacture, and carry on the user special request of the press, the brick press non - standard design and the manufacture. the company strengthens to the new product technology development, fetch in the world most advanced company technology to transform the 630 tons above specifications heavy press. j53 - 1000c, j53 - 1600c, j53 - 2500c, j53 - 4000c, j53 - 6300c series press and j54 - 1000c, j54 - 1600c, j54 - 2500c series fine press, j93 - 1000c, j93 - 1600c brick press rapidly seizes the market by its reliable performance
公司加強對新產品技術開發力度，引進世界最先進的雙盤磨擦螺旋壓力機製造企業德國哈森公司技術，對630噸以上規格的重型壓力機進行改造設計，設計與製造的630型至6300型分段機身四拉桿予應力結構的壓力機壓磚機，成為原整體機架壓力機的更新換代產品，其中j53 - 1000c型， j53 - 1600c型j53 - 2500型， j53 - 4000型， j53 - 6300型壓力機， j54 - 1000c型， j54 - 1600c型， j54 - 2500c型精壓機， j93 - 1000c型， j93 - 1600c壓磚機以其可靠的性能迅速占領市場。Tensile stress field would appear in the proximity of arched vault after excavation, slacking of surrounding rock and subsequent dropping of blocks of rock from such area would possibly occur at any time in the context of extra - shallow depth. so i - steel arched support must be erected to provide against possible block dropping and be integrated into a ring with that of pilot tunnels on both sides
拱頂在核心土開挖后，在一定范圍內出現拉應力區，在超淺埋情況下極容易掉塊和發生圍巖松馳，因此核心土必須邊開挖邊架設工字鋼拱架，使之與左右導洞拱頂工字鋼形成整體。( 2 ) the crack load increases with the increase of the amount of the prestressing steel or the tensioning stress
（ 2 ）預應力筋用量的增加、張拉控制應力的增大使預應力框架梁、柱的開裂荷載提高。Influence of the amount of the prestressing steel and the tensioning stress to the crack load of the beam is greater than that to the crack of the column
並且預應力筋的用量和張拉控制應力對梁開裂荷載的影響要比對柱開裂荷載的影響要大得多。Results of study show that inception voltage of electrical tree, breakdown voltage, environmental stress cracking, tensile strength and elongation at break of low density polyethylene are improved after grafting
研究結果表明：接枝聚硅氧烷后，改性的低密度聚乙烯的樹枝引發示性電壓、擊穿場強、耐環境應力開裂性、拉伸強度及斷裂伸長率都得到提高。The complex stress calculation formula, after starting of necking in simple tension experiment, is deduced in the paper
導出了單向拉伸試驗頸縮開始后復雜應力的計算公式。( 2 ) development and application of the light - type cable - stayed hanging - cradle for railway, the hanging - cradle was applied in the construction of large span railway prestressed continous beem bridge, the quality and schedule of the construction was ensured
（ 2 ）開發、應用鐵路輕型斜拉式掛籃，施工大跨度鐵路預應力混凝土連續梁，保證了工程質量，達到了最快6d澆築t構一對梁段的施工進度。Developing a software for the testing machine measuring and controlling system. the software can automatically switch control mode according to standard in the process of tensile testing and automatically judge constitutive mode of material. at the same time, it can automatically measure elastic modulus e, yield strength o s, proof strength, non - proportional extention o 0. 2, percentage extention 8, tensile strength o b, etc. it can applied in industry practice
在經典pid控制與模糊控制的基礎上，設計了模糊自適應pid控制應用於試驗機的應力、應變及位移控制； 3 、開發了一套完整的試驗機測控系統軟體，能在試樣拉伸過程中按標準自動切換控制方式並自動判別材料本構模式，能夠自動測定彈性模量e 、屈服限_ s 、條件屈服限_ （ 0 . 2 ） 、延伸率、強度限_ b等，應用於工程實際。In other words, the process of analyzing relaxation zone related to one safety factor can also be regarded as the process of searching potential slide surface related to the same safety factor. elastic wedge model is used for analysis of relaxation zone of cutting homogeneous slope. on the basis of elastic plane - strain theory, the relaxation zone can be calculated according to mohr - coulomb or drucker - prager law and single tension intensity principle which are both related to one safety factor after three - dimensional stress field of the cutting slope is got
提出均質邊坡開挖鬆弛區可以用彈性理論中的楔形體理論分析，在平面應變問題的基礎上得到開挖坡體的三向應力場之後，可運用考慮安全儲備后的強度條件（主要為摩爾?庫侖或德魯克?布拉格強度準則和單軸抗拉強度準則）解析坡體分步開挖過程中的鬆弛區范圍，給出了具體的計算步驟，並通過算例較詳細地說明了操作過程。A switchable and spacing - tunable dual - wavelength linear cavity edfl is demonstrated experimentally using this kind of bragg grating for wavelength selection. it exploits the birefringence characteristic of the fbg induced by transverse strain. transverse strain loading on the fbg allows the wavelength spacing to be controlled while axial strain shifts both wavelengths together
2 .對軸向及側向應力共同作用下的光纖布拉格光柵的透射及反射光譜特性進行了理論及實驗研究，並首次把軸向及側向應力共同作用下的光纖光柵應用於光纖激光器進行波長選擇，得到了室溫下穩定工作的波長及波長間隔可調的可開關雙波長的摻鉺光纖激光器。Plastics. determination of environmental stress cracking. constant - tensile - stress method
塑料製品.環境應力開裂測定.恆定抗拉應力法Steel fiber scatters stress converging in the area of the top end of tiny cracks, restrict the occurrence and development of cracks, diminishes the width of cracks, and enhances the integrity of concrete with the occurrence of cracks via the effect of felting between concrete and steel fiber, and consequently the strength of concrete that resists compression, tension, and shear force increases obviously, and the capability of concrete that resists compact, and fatigue, and the ductility and durability of fissured concrete improve
鋼纖維削弱了混凝土微裂縫尖端的應力集中、限制並約束裂縫的產生和開展、減小裂縫寬度、尤其是通過粘結作用提高了裂后混凝土的整體性，從而使混凝土的抗拉、抗彎、抗剪強度顯著提高，其抗沖擊、抗疲勞、裂后韌性和耐久性也有較大程度的改善。After excavation, there are concentration phenomenon of stress at the corner or the shiplock room, and the tension zone lies in half of the middle part as well as the part of the two slopes to the lower part of the upright wall. finally the analysis results are compared with site monitoring data in period of construction as well as the feedback reports, the result of all comes to meet with each other very well
開挖完成後，在閘室拐角處存在不同程度的應力集中現象，中隔墩上部1 2的巖體及南北邊坡至直立墻頂部平臺以下的部分巖體為拉應力區。在兩側邊坡及邊墻的塑性區出現在損傷區和部分卸荷影響區內，中隔墩大部分區域的巖體都進入了塑性狀態，閘室底板處的塑性區基本上與損傷區一致。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。In this model the anisotropic constitutive models of concrete are introduced according to its different behaviors under compressive stress and tensile stress, and it is considered that a certain amount of rust product is carried away from the rust layer around the reinforcement and deposited within the open cracks after the cover cracked, which will reduce the expansive pressures
由於混凝土拉壓性能的不同，應用各向異性本構關系，並考慮保護層開裂以後，鋼筋的銹蝕產物會有部分滲透到裂縫中，降低銹蝕產物對保護層的膨脹壓力，對鋼筋銹蝕膨脹應力進行了計算。Then, a step - by - step increase of vertical curvature is applied to the hull girder assuming that the plane cross section remains plane. at each incremental step, the stress of the cross section is evaluated using the average stress - strain curves of the elements as well as the incremental bending moment due to the curvature increment. performing sample calculations on existing girder models tests under pure bending, the rationality of the proposed method was examined
假設船體橫向框架材足夠強，因而板架的整體破壞不會發生；基於梁?柱理論、理想彈塑性假設、平面假設，建立了拉伸和壓縮加筋板單元的平均應力?應變關系曲線，應用船體結構總縱極限強度的簡化逐步破壞分析方法計算船體總縱極限彎矩，並據此開發了計算程序sus 。Aiming at main project of the xiaoxihu bridge, a low pylon cable - stayed bridge, based on the existing theory and method of the bridge construction controlling theory, using the basic function of " ansys ", farther exploitation was done on concrete elasticity and creep calculating distinguishingly, nonlinearity analysis theory was used to construct the space model, the main beam, string pylon and abutment were simulated by the beam elements which was considered the shearing effect. which is worthy of considering that using the geometric non - linear truss elements to simulate the stayed - cable, form traveler is modeled as structure elements and participate in stress analysis. four stages are used to model the construction stage, which are : ( 1 ) the erection of form traveler ; ( 2 ) placing the segmental concrete ; ( 3 ) jacking the tendons ; ( 4 ) tensioning the stay cables
針對建設中的小西湖矮塔斜拉橋的主體工程，結合已有的橋梁施工控制的理論和方法，利用大型通用計算軟體ansys的基本功能，並著重在混凝土彈性計算及徐變計算方面做了相應的二次開發，採用非線性分析理論並建立了空間結構模型、用考慮剪切作用的梁單元模擬主梁、索塔和橋墩；用可考慮幾何非線性的桁元模擬斜拉索、施工掛藍作為結構單元進行拆裝，參與受力計算，整個施工過程按施工循環周期分為若干階段，每個階段又分為四個工況，即：空掛藍就位、澆築完畢階段混凝土、張拉預應力鋼筋和張拉斜拉索。Experiment and theories analysis express low shear walls the general occurrence shear to slice the breakage, before shearwalls " concrete crack, the wall plate concrete under takes the big part shear stress, exsist inclined pull lord should dint ; after wall concrete crack, wall plate the reinforcing bar undertakes the big part shear stress, so changes to suffer the mechanism originally, hence formation the inclined direction suffers to press the piece of with suffer to pull the reinforcing bar pull, press the resistance
試驗及理論分析表明低矮剪力墻一般發生剪切破壞，在墻體混凝土開裂前，墻板混凝土承擔大部分剪力，存在著斜拉主應力；在墻體混凝土開裂后，墻板中鋼筋承擔大部分剪力，從而改變了原來的受力機理，於是形成斜向受壓構件（裂縫間混凝土斜壓柱體）和鋼筋的拉、壓抗力。分享友人