集中線荷載 的英文怎麼說
中文拼音 [jízhōngxiànhézǎi]
集中線荷載
英文
knife edge loading-
This paper focuses on the research of the stress mechanism of the ribbed shell structure in statics, dynamics and under the explosive load on the basis of the engineering practice of cave depot of single aircraft. in this paper, according to the classical shell theories, the basic differential equilibrium of the ribbed shell structure and the finite element analysis of 3d rippled plate are established, in which the function of annular ribs reinforcement bars and 3d ripped steel plates are distributed in the range of the steel, and the functions along the longitude direction of tension, bending, and torsion are neglected ; applied with dynamic analytical theory, the dynamic model of ribbed shell structure and the analytical theory model of elastic - plastic are set up ; the triangle series method is used to solve the displacement and stress under the distributed load and the concentrated load of the ribbed shell structure
本文以軍用機場地面單機掩蔽庫工程建設為工程背景,首次對內襯三維波紋鋼板混凝土拱型復合結構的受力機理進行了靜力、動力和爆炸荷載的分析研究。根據將橫肋、鋼筋及三維波紋鋼板的作用均勻分佈在殼體范圍內的情況,忽略橫肋、鋼筋及三維波紋鋼板沿殼體母線方向的抗拉、抗彎及其抗扭作用,首次推導出了內襯三維波紋鋼板混凝土殼體的微分平衡方程,建立了有限元計算模型,並採用三角函數法,求解了三維波紋鋼板混凝土拱型復合結構在分佈荷載和集中荷載作用下的位移響應和應力響應,並與普通殼體進行了比較。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86The prime works are as follows : strain and stress distribution of section was analyzed. the effect of prestress degree. on cracking moment was explored. the relation of the unbonded prestress increment to effective reinforcement index and corresponding bonded prestress increment were studied. the formulae had been established
其次,設計了三根活性粉末混凝土無粘結預應力疊合梁,兩點對稱集中加載、一次受力,得到了它們的截面應變分佈、撓度與變形、無粘結預應力鋼絞線的預應力增量、裂縫的發展與分佈以及極限荷載。Three phase dry type power transformer, which make it with those features : safety, reliability, and energy saving, fireproof, flameproof, simple maintenance etc., the design is advanced ; the structure of products is reasonable and the outline is fine, the main performances of the products are much better than the national standards, for example, partial discharge level no - load loss, on - load loss, noise level, it is adaptable for application on heavy humidity and severely pollute places which are near to lake, sea and rive, as well as, high demand - fireproof, heavy load capacity place, such as : high building, airport, station, port, underground, hospital, electrical power station, metallurgy, shopping center, residential area and petroleum chemical industry, nuclear power station, nuclear - powered submarine
非包封線圈三相干式變壓器,具有安全可靠節能防火防爆維護簡單等優點。其設計先進結構合理外形美觀。主要性能指標均優于國內標準,如局放水平空載損耗負載損耗噪聲以及能適應高溫度環境使用等,可安裝在靠近湖海河邊污穢潮濕的環境及防火要求高負荷較大的地區,適用於高層建築機場車站碼頭地鐵醫院電廠冶金行業購物中心居民密集區以及石油化工核電站核潛艇等場所。This project makes some researches with emphasis on the mv / lv distribution power supply situation under the present load condition. some results such as the calculation of line load rate, theoretical line consumption rate and electric voltage decrease are acquired by the mathematical analysis, and thus the power supply capability is evaluated comprehensively. the same has been done to the lv power network
課題在系統搜集分析蘇州供電企業的背景資料,即企業概況、電力需求、輸電網、高壓配電網狀況基礎上,重點研究了當前負荷下的中低壓配電網供電情況,並通過數學分析得出線路的負載率的計算、理論線損率以及電壓降等各項運行指標,綜合評估得出其供電能力。Profiled sheeting made of coated or non - coated steel sheet and panels. bending tests under linear loads and or under concentrated loads
有塗層或無塗層鋼製成形板.線性荷載和或集中荷載下的彎曲試驗The non - linear equations of strings under a concentrated load are derived
摘要建立了集中荷載作用下懸索的非線性方程。The paper points out that the natural vibration frequency of strings can not be used to that of suspension cables
指出工程實際中不能將弦線的自振頻率作為有集中荷載作用的懸索的自振頻率。Some hardware are used to construct data acquisition system, virtual instrument are used to compile data processing programs. just as expected, according to standard of iec61400 - 13, some diagram and curve are depicted in the end of dissertation, and program can provide life prediction method of wind turbine from damage theories in the end of dissertation
疲勞載荷測試系統通過一定的硬體系統採集相關數據,在數據分析方面使用虛擬儀器軟體進行數據處理,使用功能強大的labview軟體編程,得到iec61400 - 13標準中所要求的曲線和圖表,最後根據損傷理論得到機械部件的疲勞載荷譜和疲勞壽命的估算方法。The developed finite element program is then used to investigate the ultimate behaviors of horizontally curved beams with a specified i - shaped cross - section. these curved members are assumed to be simple - supported and subjected to a conce
利用上面編制的非線性有限元程序,針對一特定截面的工字形水平曲梁,研究其在跨中集中荷載作用下的彈塑性工作特性。When there is original stage support only, the load ratio of surrounding rock gets more and more bigger with the increasing of crust stress, correspondingly, the load ratio of initial stage support gets smaller. when the initial stage support and the second support act each other, the load ratio of surrounding rock is more than fifty percent, and it has little change with the increasing of crust stress. the whole analysis of the surrounding rock and support shows that the bottom arch of liner and the feet of liner have serious stress concentration, so do the sidewalls and the foot of a wall of the surrounding rock
通過屈曲理論分析結果對比表明,彈性屈曲和突變失穩分析的結果比非線性屈曲分析的結果要大得多,非線性分析由於考慮了材料非線性和幾何非線性,因而結果與實際接近實際;當只有初期支護時,隨著地應力的增加,圍巖的荷載分擔率增大,相應地,初期支護的荷載分擔率就減小了;當有初期支護和二次襯砌共同作用時,圍巖的荷載分擔率在50以上,這一分擔率隨地應力的增加其變化不大;支護和巖體的整體分析表明,襯砌底拱及拱腳處應力集中嚴重,隧道巖體側墻及墻角圍巖的應力集中也較大。It is avoiding to be engrossed bandwidth by useless fi 11ing data that is transformed in network. in order to assure the rea1 tiine of network transport, network is maintained a 1 ight - - 1oad status. it 1s the ways that fie1dbus is powered providing work - - power for fie1d device by spare wires among 1 inking - - wires
我們用全雙工交換式以太網技術解決傳輸中通信的實時性和確定性問題,便用交換式集線器擴大網路帶寬,使用udp通信協議保證報文傳輸的有效載荷、避免不必要的填充域數據在網路上傳輸所佔用的帶寬,使網路保持在輕負荷工作條件下,進一步保證網路傳輸的實時性。In this paper, depending on the enormous 356 pile testing date detailed with soil and pile parameters and p ~ s curves, covering xi ' an and adjacent areas, we analyzed the load transmission mechanism of pile in loess foundation, and proposed a kind of hyperbolic load transmission function between pile and it ' s neighboring soil. meanwhile, we created a mathematical model to predict p ~ s curve and bearing capacity of single pile. by analyzing the compacting effect caused by pile - sinking of pressed pile in loess and it ' s influence on bearing capacity and settlement, two parameters, kc and ke are introduced to modify the soil cohesive c and deformation modulus es
本文利用現己收集到的西安及其周邊地區356根打入樁、靜壓樁、灌注樁的現場試樁資料(其中打入樁67根,靜壓樁121根,鉆孔灌注樁168根,並有詳細的地層勘探資料,樁深資料,荷載沉降?曲線)對西安黃土地基中的打入樁、靜壓樁、灌注樁的荷載傳遞機理進行了分析研究,認為用雙曲線型的荷載傳遞函數模擬樁土之間的荷載傳遞函數是合適的,並用荷載傳遞分析的方法建立了計算p s曲線的數學模型及極限承載力的確定方法。The result indicate that the influences of geometrical nonlinearity is different to the structure critical load under different load cases. under the live uniform load, the structure critical load decreases 10 % after considering the geometric nonlinearity ; and under the live uniform load or concentrated load act on half bridge, the structure critical load decreases 35. 38 % or 74. 08 % after considering the geometric nonlinearity
計算結果表明,在不同的加載工況下,幾何非線性對結構的臨界荷載影響程度不同,幾何非線性對全橋均布活荷載作用下的臨界荷載影響較小,考慮幾何非線性后,臨界荷載僅下降了10 % ,而在半橋均布活荷載和集中荷載作用下,幾何非線性對其臨界荷載影響很大,考慮后其臨界荷載分別下降了35 . 38 %和74 . 08 % 。Structure deformations rely mainly on shearing deformation in structures above the transfer girders under the trigonometry load or uniform load, and rely mainly on linear deformation under the concentrated load
轉換梁以上結構在頂點集中荷載下變形以直線形為主,在倒三角荷載和均布荷載下變形以剪切變形為主。The initial strain must be the optimum value obtained by multiple - trial method. 5. in the static analysis of the bridge model under live load, assuming a shifting concentrated load on the girder, analyzing the relation map of each section deflection and the location of the concentrated load, finishing the load - on of the worst - case live load, then the moment and deflection envelope diagrams of the girder were obtained
成橋模型建立后,在後續活載作用下的靜力分析必須首先在主樑上作用移動集中荷載,分析主梁各斷面的活載撓度與集中荷載作用位置關系曲線圖,完成最不利活載的加載,從而最後得到懸索橋主梁的彎矩包絡圖及撓度包絡圖。In order to research mechanical capability of the reinforced concrete beam with bonding steel plate, adopting separate method to establish finite element model of the reinforced concrete beam with bonding steel plate, using fem to study dynamical characteristics of the model, have got good results which can not be easily got using traditional resolution method, which can give reference to study dynamical characteristics of the reinforced concrete beam with bonding steel plate
摘要為了研究粘鋼加固后鋼筋混凝土梁的各種力學性能,採用分離式方法建立了粘鋼加固后鋼筋混凝土梁的有限元模型,並用有限元方法對此模型先後進行了模態分析和簡諧集中載荷作用下的動力響應分析,得出了加固后鋼筋混凝土梁的前5階振動模態和簡諧集中動荷載作用下粘鋼加固鋼筋混凝土梁底部開裂的極限動載荷幅值頻率曲線,可為研究粘鋼加固鋼筋混凝土梁的各種動力特性提供參考。Moreover, when the filaments are treated for 12 minutes, the interfacial shear stress will be lower than that treated for 6 minutes. izod pendulum is used to test the influence of the fiber / matrix bond strength on the low velocity impact responses of the composites. the curves of energy - time, force - time and velocity - time are obtained by a data acquisition system
用擺錘低速沖擊儀對界面粘結強度不同的材料進行沖擊試驗,藉助數據採集系統得到沖擊過程中材料吸收的總能量、承受載荷、擺錘速度等參數與時間的關系曲線,並通過pc機處理,將載荷?時間曲線轉化為載荷?位移曲線。Secondly, safety factor of a landslide body with a polygonal sliding surface is analyzed in this paper. the results demonstrate that this method can consider that the different material stiffness parameters in the landslide body have an effect on the safety factor. finally, the safety factor of a three - dimension landslide body with a spherical sliding surface is calculated with this method, and the applicability of this method for three - dimension slope is verified after comparing the result with theoretical answer
文中首先用具有理論解的算例? ?垂直坡受集中荷載的安全系數問題驗證了該方法的正確性,再通過對一個具有折線滑動面的滑坡體的安全系數的分析說明了該方法還可以考慮塌滑體內不同的材料剛度參數對安全系數的影響,之後用該方法對一個具有球形滑裂面的三維滑坡體進行了計算,通過與閉合解的比較驗證了該方法對三維邊坡問題的適用性。分享友人