拉偏試驗 的英文怎麼說
中文拼音 [lāpiānshìyàn]
拉偏試驗
英文
bias test-
The structure of the deformation bands was observed and photographed by a microscope with a camera accessory. a user material mechanical behavior ( umat ) subroutine was developed based on the crystal plasticity model, and with it, the anisotropic elasto - viscoplastic behavior in single crystals was described. slip systems " evolution was simulated by using finite element method with the subroutine
本文使用數值模擬的方法對[ 001 ] 、 [ 011 ] 、 [ 111 ]以及偏軸加載的多種取向試樣進行了拉伸試驗模擬和循環模擬,研究了不同取向的試樣在加載過程中滑移系的演化情況,並對試樣的宏觀力學行為和細觀機理進行了評述。Based on analysis and comparison of existing test data applied to existing ultimate strength prediction models, interfacial stress at the end of plate is deduced. after formulas for calculating the effective moment of inertia for frp - strengthened beams being revised and adjustment coefficient related to nominal main steel reinforcement ratio and curtailment length ratio being put forward, strength prediction formulas of compound beams under plate end debonding failure are established. in analysis of strength of compound beams under intermediate crack induced interfacial debonding failure mode, several bond strengths and their relation are introduced
對于板端剝離破壞,在總結現有承載力模型的基礎上,利用已有試驗數據對各承載力計算公式進行了分析比較,進一步採用分階段分析法,推導了板端界面應力的計算公式,在此基礎上,採用加固復合梁有效慣性矩的修正公式,建立了考慮名義配筋率和板端偏移比影響的板端剝離破壞梁承載力的計算公式;對于跨中受彎裂縫導致的粘結破壞,闡述了常見的幾種粘結強度之間的區別和聯系,並基於拉剪粘結強度,提出了跨中受彎裂縫導致粘結破壞的承載力計算公式,並利用現有試驗結果確定了模型中的一些參數;最後,利用試驗數據對本文建立的兩種粘結破壞承載力計算公式進行了檢驗,結果基本吻合。For the cantilever beam, the theoretical stiffness and limited capacity are slightly less than the test ones if considering only the steel beam and the reinforced bars in the negative moment zone with the concrete in the tension zone ignored
結果表明:簡支組合扁梁,忽略彈性中和軸以下受拉的混凝土的影響,採用等效換算截面方法計算所得的剛度和極限承載力與試驗結果比較吻合;懸臂梁只考慮混凝土板中配置的負彎矩鋼筋,忽略混凝土,計算所得的剛度和極限承載力比試驗結果略微偏小,但相差不大。Firstly, the domestic researches, which have been reported, are introduced. then the characteristic of the system in estimation of prestressing losses is analyzed by theoretical method, and the reasons that the elimination of tendon is large and test results are not consistent are pointed. using fem software ansys, anchorage zone of pylon are analyzed
論文首先介紹了國內現階段對該問題的一些研究成果,然後從理論上分析了小半徑大噸位環向預應力體系在計算預應力損失方面的特點和造成張拉伸長量偏大且實測的數據離散性較大的原因,並採用國際權威的有限元分析軟體? ? ansys從理論上進行分析和索塔錨固區最不利節段的足尺寸模型試驗進行校驗。Many factors are considered in the study of the nonlinear buckling bearing capacities of the representative concrete filled circular and square steel tube columns, these factors include the sectional form, the slenderness ratio, the steel ratio, and the eccentricity ratio. the comparison between the test and calculating results shows that they have a good agreement. in theoretical investigation of the time - dependent behaviour of cft specimens, based on the three - dimensional viscoelastic theory, this paper proposed the three - dimensional finite element model of creep of core concrete, in which a linear three parameters visoelastic model was adopted
在對鋼管混凝土構件極限承載力的分析計算中,本文提出了核心混凝土的三維非線性應力?應變全量和增量本構關系模型,採用完全的拉格朗日表述來考慮與變形歷史有關的大變形問題,並對長細比、含鋼率和偏心率在較大范圍內變化的方、圓鋼管混凝土構件的非線性屈曲承載力分別進行了試驗和理論對比分析研究,結果表明二者符合較好。In order to investigate the mechanics properties of square cft ( concrete - filled tubular ) stub columns with binding bars under unilateral eccentric loads, 14 specimens were tested by considering the parameters such as the steel ratio, the load eccentricity ratio and the location of the binding bars
摘要為了解帶約束拉桿方形鋼管混凝土短柱在單向偏心荷載作用下的力學性能,進行了14個試件的偏壓試驗,主要研究截面含鋼率、荷載偏心率以及約束拉桿設置對帶約束拉桿方形鋼管混凝土短柱偏壓力學性能的影響。The third one, we calculated the local facet temperature theoretically and experimentally when ld are operated, the former, we used the henry ' s model, however, the latter, we chose the photoluminescence and raman spectra, finally, we found that accuracy of pl is better than that of raman spectra, however, theoretical results is higher than trial results, but theoretical results accorded with pl when operating current increase. the fourth, electric derivative testing techinque at the constant current ( 500ma ) and temperarure ( 40c ). we study the reliability of ld, and analyzed the reasons, we measured more than the ingaasp high power semiconductor lasers with electric derivative technique, and analyzed the relation between the electric derivative parameters, m, b, h and reliability of devices
分別從理論上和實驗上計算分析了激光器在工作時腔面的溫度分佈,理論上採用的是henry模型,實驗上通過光致發光和拉曼光譜法測試了激光器在工作時的腔面溫度分佈;結果表明光致發光法測量的較為準確,拉曼光譜法測量的值偏大,由於我們對理論模型做了一定的近似,理論結果偏大,但理論值在大注入時和光致發光法符合的較好,由此可見光致發光法對研究腔面的溫度有更大的優越性。Experimental results indicate that the strength capacity, stiffness of columns have a certain extent increasing as a result of the action of cfrp, repaired columns " cracks show little and distribute uniformly. the ultimate strength and ductility of column improved due to the transverse strengthening with cfrp and display more distinct benefit when strengthened by the combined action of the longitudinal and the transverse straps of cfrp. in addition, many parameters including anchorage length of cfrp, thickness of cfrp are considered on the effects of cfrp on strength, and failure modes of columns
試驗結果表明,大偏心受壓柱受拉麵縱向粘貼碳纖維布后,偏壓柱承載力和抗彎剛度有一定程度的提高,裂縫寬度減小且分佈均勻;碳纖維布橫向粘貼偏壓柱對偏壓柱的承載力和延性有一定的提高;縱橫向混合粘貼大偏壓柱加固效果更顯著;混凝土強度低於c20級時,不適合採用碳纖維布粘貼加固。分享友人