預拉 的英文怎麼說

中文拼音 []
預拉 英文
preliminary drawing
  • : Ⅰ副詞(預先; 事先) in advance; beforehand Ⅱ動詞(參與) take part in
  • : 拉構詞成分。
  1. For reducing the disadvantageous influence of the the relaxation of strain and the lose of pretension on the structure, the time span of delaying scene torsional moment checx and accurate maintence method are given

    為減少高強螺栓預拉應變鬆弛和預拉應力損失對結構的不利影響,給出了延遲現場扭矩檢測的時間區間和正確維護的方法。
  2. The effects of baking temperature, baking time and prestrain on the bake hardenability and dent resistance of isotropic sheet steel and bh sheet steel produced by batch annealing were studied

    摘要研究了烘烤溫度、烘烤時間和預拉伸應變量對罩式爐退火工藝生產的各向同性鋼的烘烤硬化性的影響,並與力學性能相當的冷軋烘烤硬化鋼進行了對比。
  3. After pretension 0. 1 strain and pretorsion to 14, whereas the strength limit keep on increasing in company with the pretorsional capacity

    其中屈服極限在預拉伸應變0 . 1后再扭轉14后達到最大值,而強度極限隨著扭轉量的提高不斷增大。
  4. Preassembled parallel wire strands, in contrast to structural strands, do not require prestretching.

    先裝配的平行鋼絲索與結構鋼纜相比,不需要預拉
  5. Prestressed concrete sleepers - pretensioning type

    應力混凝土軌枕.預拉伸型
  6. In order to predict high - strength bolts pretension and contact - friction in contact zone, status nonlinear in contact zone is adopted in fem model. the computation and analysis on the behavior of beam - to - column rigidity joints subjected to constant axial pressure on the top of column and cyclical load at tip of beam is carried out

    實體模型的建立,考慮了接觸區的狀態非線性,以模擬高強螺栓的預拉力、螺栓連接區的摩擦接觸,對承受軸力的樑柱剛性連接方式在循環荷載作用下的滯回性能進行了計算分析。
  7. Supporting mechanism of pre - tension 3d - cable and its application

    預拉力三維錨索支護機理與實踐
  8. The residual stresses in the thick aluminum alloy plates of ly12, b95. and 7050t7451 are measured, and the results are analyzed and compared

    在此基礎上,首次對國產ly12 、美產7050t7451和俄產b95 .三種典型的鋁合金預拉伸板內部初始殘余應力分佈進行了測試和對比分析。
  9. 2. the residual stresses in pre - stretched aluminum alloy plates are successfully measured and analyzed. the measurement precision and applicability of the modified layer removal method are analyzed and evaluated by experiments

    2 、鋁合金預拉伸板內部殘余應力分佈規律的研究通過試驗研究對改進剝層法測試理論的測試精度及工程實用性進行了分析和評估。
  10. The new construction technique applied to the huge steel boxed cofferdam for foundation of pylon pier no. 2 of wuhan tianxingzhou changjiang river rail - cum - road bridge was to fabricate the cofferdam in integrity in workshop, shift it down to river and float it to the pier site where it is then accurately positioned by pre - tensioning at the anchor pier

    摘要武漢天興洲公鐵兩用長江大橋2號主塔墩基礎大型鋼吊箱圍堰採用工廠整體製造,下河浮運至墩位,利用錨墩施加預拉力精確定位的施工新工藝。
  11. 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。
  12. These can make up the shortcoming of slrcp ; 2 3. to study the steel stress development of penstock, ring - form slsfsrcp and horse - shoe slsfsrcp during curing period are monitored. the pre - tension stress due to expansion of self - stressing concrete can be used in design ; 4

    對圓形和馬蹄形管道進行了28天養護期內力監測,研究了鋼襯鋼筋鋼纖維自應力混凝土壓力管道的自應力成長過程,明確了鋼筋的預拉應力數值,為此類改性管道設計直接提供依據; 4
  13. After pretorsion the successor tensile yield limit and strength limit both improved very highly, but the trend of the increase of the strength limit was suspended till the pretorsional capacity reached 17, when the pretorsional capacity was greater than17 ( prestrain value was 81. 19 % of total strain ), the successor strength limit rapid failed and approached the yield limit. this illustrate the a3 steel specimen translate from plasticity into friability after pretorsion strengthen. when the specimen was operated by tension - torsion action, the yield limit had very large improved, but the strength limit changed very little. furthermore, the trend of the increase of the strength limit was suspended till the pretension capacity reached 0. 25 ( prestrain value was 66. 93 % of total strain )

    A3鋼試件在扭轉后,后繼伸屈服極限和強度極限均有很大提高,但強度極限的增大趨勢到扭轉量為17為止,扭轉量大於17 (應變值為總應變的81 . 19 )后強度極限迅速下降,與其屈服極限接近,這說明a3鋼試件經扭轉強化后逐漸由塑性轉化為脆性。該應變值為a3鋼試件的韌脆轉變點。 a3鋼試件在伸-扭轉作用下,屈服極限有很大提高,但強度極限沒有多大改變,而且,屈服極限的增大趨勢到預拉伸量為0 . 25應變(應變量為總應變量的66 . 93 )后就不再增加。
  14. Machining deformation of aircraft monolithic component is simulated by finite element method ( fem ) and validated by experiment. the initial residual stress in pre - stretched plate is generated by simulating quenching and stretching processes. with a single tool - tooth milling process fem, the machining loads in monolithic component material removing is obtained. restart - calculation is put forward to complete the whole simulation of machining process. to verify the fem result, an experiment is carried out. the deformation distribution of the monolithic component resulting from fem shows a good agreement with the experiment result, which indicates that the key technologies presented in the paper are practicable and can be used to simulate the milling process of monolithic component to predict its deformation. lengthy and expensive trial and error experiment process can be avoided

    在模擬淬火、伸過程獲得含有初始殘余應力的預拉伸板材以及模擬單齒切削過程獲得切削載荷的基礎上,提出並採用接力演算法,對一航空整體結構件的材料銑削過程進行有限元模擬,同時進行了試驗研究.結果表明,有限元模擬的整體結構件的變形與試驗具有一致性,從而證明提出的整體結構件加工模擬關鍵技術的可行性,避免了為研究加工變形而進行的繁瑣的試錯法
  15. Using the general finite element programming package of ansys10. 0, the study of gabled frames beam - column end - plate connections is made, considering synthetically nonlinear ( material, geometry and contact ), bolt pretension forces and ratio of axial compression stress to strength. elastic - plastic finite element analyses are carried out among 28 species of 3 series under monotonic loads, in order to discuss the influence of parameters including stiffness of end - plate, bolt diameter, friction coefficients and so on

    本文使用通用有限元軟體ansys10 . 0綜合考慮了三重非線性(材料非線性、幾何非線性以及狀態非線性)的影響,同時考慮了螺栓預拉力的影響,對考慮端板厚度、端板加勁肋的設置、螺栓直徑、摩擦系數等參數不同的3個系列(端板系列,螺栓直徑系列,摩擦系數系列) 28個試件進行了有限元數值模擬,對連接節點的性能進行了分析研究。
  16. Before plastic optical fiber widespread application, each kind of plastic optical fiber coupler must be used surely, at present the important method to manufacture the plastic optical fiber coupler is fused elongated taper. if adopt this kind of method, the conversion efficiency between the core modes and the cladding modes is low. one of the methods to solve that is

    在塑料光纖廣泛應用之前必然運用到各種塑料光纖耦合器,目前熔融錐法是制備塑料光纖耦合器的重要方法,然而此種方法存在纖芯模與包層模的轉換效率比較低的問題,解決這問題的一種方法是對塑料光纖進行熱預拉錐。
  17. The former model of staged loading and staged optimization is improved, in which the value range of pre - stress restrict in restrict equation. it provides the theoretical base for the loading time of multi - pre - stress and the value of pre - stress. and examples analyzed with linear programming and full - constrained methods prove the convergence effect well

    論文在單次應力鋼結構的優化模型的基礎上,建立了多次應力鋼結構的優化模型,將原有的分級加載,分級優化的模型加以改進,在優化模型中將約束方程中的預拉力約束的取值范圍擴大,使得多次應力的施加次數、施加預拉力的數值大小的確定有了理論根據,並利用線性規劃和滿約束結合的方法進行求解,通過算例分析,收斂效果較好。
  18. The process of rotary stretch bending without lateral compression and with lateral compression is analyzed separately, and the models of the stress distributing in the section and the springback are also presented separately to discuss the relations between pre - stretch force, lateral compression and the amount of springback. numerous experiments had been done on the equipment of ztlw - 8

    本文以等邊角型材為研究對象,使用解析法分別對無側壓與側壓轉臺式彎成形過程進行研究,建立了成形區截面的應力分佈模型和回彈測模型,從理論上探討了回彈半徑與預拉力、側壓力的關系。
  19. 1. the measurement method of residual stress distribution in thick aluminum alloy plate is studied. aiming at the difficult problem to measure residual stress distribution in thick plate, a new method is proposed - - modified layer removal method, based on existed measurement theories and according to the characteristics of thick pre - stretched aluminum alloy plate

    本文所完成的主要工作如下: 1 、鋁合金預拉伸厚板內部殘余應力的測試方法研究針對厚板內部殘余應力測試這一技術難題,在現有測試技術研究的基礎上,結合鋁合金厚板的特點,提出了一種新的測試方法? ?改進剝層法。
  20. Steel reinforcement bar pre - drawn platform

    鋼筋預拉
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