contact strength 中文意思是什麼
contact strength
解釋
接觸強度-
Reliability analysis of contact fatigue strength of cycloid gear in fa reducer
傳動擺線輪齒面接觸疲勞強度可靠性分析 -
The particles distributed hi the matrix of grey cast iron, but some contact each other. the composite layer extend gradually into the substrate. when volume fraction of wc is 36 wt % and 27 wt %, the matrix of the composite is high chromium cast iron, consist of white carbide bars and the austenite. wc particles distributed uniformly, retaining approximately quondam granular form in the composite layer which has an evident interface area with the substrate, with good bonding strength
對不同碳化鎢體積分數的灰鐵和低鉻鑄鐵基復合材料的微觀組織結構分析表明：碳化鎢體積分數為52時，復合層內基體為灰口鑄鐵組織，顆粒直接分佈在灰鐵基體上，部分碳化鎢顆粒有相互接觸的現象，基材與復合層之間沒有明顯的過渡；碳化鎢體積分數為36 、 27時，復合層內基體為高鉻鑄鐵，由面塊狀的奧氏體和白條狀碳化物組成，碳化鎢顆粒表面固溶於基體組織中，粒形基本保持完整，分佈均勻，與基體構成冶金結合，基材與復合層之間存在一個明顯的平緩過渡區。 -
Taking the contact stress, bend stress stiffness and temperature stress as the condition, taking the weight of the kiln tyre as optimization aim function, the redia and the width of the tyre are optimized general optimize methods just consider the affecting of the parameters to aim function, but in fact, structural parameters ( such as structure dimension, interval and so on ), physics and dynamics ( damp factor, conduct factor, friction factor material ' s elastic module strength limits and so on ), which would be changed after used. the difference are called discrepancy robust design ' s basic concept is : all design parameters " discrepancy will affect the aim funct ion and arouse the quality target discrepancy
一般的優化方法，僅僅考慮了參數對其目標函數的影響，而實際情況下有些參數是變化的，產品的結構參數（如幾何尺寸、間隙等） 、物理和力學參數如阻尼系數、傳導系數、磨擦系數、材料的彈性模量和強度極限等的設計值與製造后和使用中的實際值會有差異，這種差異稱為設計變量和噪聲因素的變差。 -
The thesis developed the optimization design software of geometric parameter for the worm gear including strength check module, the drawing contact lines module, the change lines of tooth thickness of worm, and the parametric modelling software for the reducer which includes parametric modelling of parts and assembly. the cad prototype system is very convenient because of its accessible interfere, simple operation and written in chinese. by input design parameters ， the cad system can make optimization design and strength check for the worm gear ， draw contact lines of tooth flank of worm - gear and change line of tooth thickness of worm ， judge if the tooth flanks of worm undercut and if the sideward tooth of worm - gear hob come to a point ， make project design and structure design for the reducer and draw its 2d parts and assembly
研究和開發了平面二次包絡環面蝸桿傳動的參數優化設計和校核軟體系統：包括幾何參數設計計算模塊，強度校核模塊，繪制齒面接觸線模塊，蝸桿齒厚變化曲線模塊和蝸桿根切判別模塊；開發了平面二次包絡環面蝸桿減速器外形與結構尺寸數據庫以及傳動效率數據庫，建立了平面二次包絡環面蝸桿傳動公差及極限偏差數據庫；開發了平面二次包絡環面蝸桿減速器參數化建模軟體：包括零部件的參數化建模模塊和裝配圖的參數化建模模塊，其中零部件的參數化建模包括蝸桿軸系的參數化建模、蝸輪軸系的參數化建模、箱體的參數化建模、端蓋的參數化建模、軸承的參數化建模和其它零部件的參數化建模軟體模塊。 -
Nevertheless, in these approaches the contact intethee are charactered sboly ed stiffeess k. and k. " which is not perfect and rigorous in thc vitw of solid mechanics and rather rough for the description of the behavior of the idtfores. in collbet, taken as a contact problem, the principal chatrs of the idtcthees can be reflected : ( l ) the cbntact inifore is of shear strength which implies tha a generic pair of contact points on the inidse will displace coincidentally if the tangential fbrce at this point has not reahed the 1imit resistance, else, relative s1ide betwee the points will occur along the tangental direction. ( 2 ) no matter the relative slide occurs or not, the contact bodies cannot invade each other in any wise
本論文在對這兩種方法進行認真的分析后，說明它們對不連續面的描述並不合理，也無法反映出不連續面的主要力學特性，同時指出，將帶有不連續面的巖土工程問題作為接觸問題計算更為合理，它可將不連續面受力變形的主要特點反映出來，即： （ 1 ）接觸面具有相應的「抗剪強度」 ，即當接觸面上某一點處的切向應力小於該點處的抵抗強度時，點對共同變形；達到強度時，則沿切向發生相對滑動； （ 2 ）在整個變形過程中，發生接觸的變形體不能相互侵入。 -
Icbc asia was assigned a2 prime - 1 long - term short - term deposit ratings and d bank financial strength rating bfsr by moody s investors service on 16 april 2004. for further information, please contact
於二零零四年四月十六日，中國工商銀行亞洲首獲穆迪投資給予a2 prime - 1長期短期存款評級及d級銀行財務實力評級。 -
After being improved, the gear surface contact fatigue strength obeys weibull distribution and stress obeys normal distribution, the gear bottom bend fatigue strength and stress obey logarithm normal distribution, according to the relation of average safe rate and reliability, then the gear strength reliability design and check equations can be deduced
將齒面接觸疲勞強度按威布爾分佈、應力按正態分佈處理，將齒根彎曲疲勞強度和應力均按對數正態分佈處理，再根據平均安全系數和可靠度之間的關系，推導出了齒輪強度可靠性設計和校核公式。 -
The sort, material composite, structure properties and conduction mechanisms of eca ( electrical conductive adhesive ) were discussed in this paper. then three types of ega specimens were designed and made, on which temperature cycles test from - 55 ? to + 125 ? and thermal aging at + 125 ? were carried out. changes of the adhesive strength, eca ' s bulk resistance and contact resistance under the environment stress were summarized and a detailed evaluation on these specimens was given
本文在全面闡述導電膠的分類組成、物理結構、導電機理的基礎上，設計並製作了三批導電膠樣品，通過對樣品進行長時間的- 55 ? ? + 125溫度循環和125高溫存儲試驗，總結了導電膠粘接強度、體電阻和接觸電阻在環境應力下的變化規律，對三類樣品的長期可靠性做出了全面的評價，並結合導電膠電阻率和「穿流閾值」的計算機模擬，給出了提高導電膠可靠性和電導率的建議，介紹了國內外在高電導率高可靠性導電膠研製方面的一些最新進展。 -
The results indicated that the dimension, shape and purity of base material could meet the functional demand of solid lubricant ; the thermal decomposition temperature of ptfe resin exceeds 400 c, but organic and inorganic packing filler added in ptfe made the water absorption rate of composite material increased, melting temperature and decomposition temperature decreased, in the meanwhile oxidative decomposition reaction was accompanied ; polar groups such as c = o, c - o - c and so on in the carbon fiber surface is advantageous to increase compatibility with other components and interlayer shearing strength ; uniform design experimental method could help to find the relationship between formula and frictional property by relatively small tests. the developing trend of each formula ' s friction coefficient could be showed by fitting curve ; the friction coefficient with no copper powder or graphite in formula was relatively big. this fact showed that copper powder and graphite should be used cooperatively ; it was found that when the ratio of copper powder to graphite by weight is 15 : 60, 30 : 30 - 40 and 60 : 15 - 30 respectively, the friction coefficient was relatively small. the degree of crystallinity of pure ptfe reached maximum by air cooling and the abrasion loss also reached maximum among three ones ; at the same time, the abrasion loss of solid lubricant sample was also the biggest among three ones ; when solid lubricant matched with 45 # steel axle or gcrl5 steel axle, lubricant transfer film could be formed on metal surface, thus direct contact between the surface of metal friction pair rings was reduced. their working life was elongated extremely ; there was mainly much graphite, a little ptff, moo3, feso4, cus and so on in lubricant transfer film
試驗結果表明：所選原料的尺寸、形狀及純度可滿足固體潤滑劑的性能要求；聚四氟乙烯樹脂熱分解溫度超過400 ，但在ptfe中加入無機填料會使復合材料吸水率提高，熔融溫度及分解溫度降低，且伴有氧化分解反應；碳纖維表面含有c = o及c - o - c等極性基團，有利於提高其與其它組分的相容性，提高層間剪切強度；均勻設計試驗方法能夠用較少的試驗次數找出配方與摩擦性能間的關系，擬合曲線基本能表示各配方的摩擦系數發展趨勢；配方中不加銅粉或不加石墨，其摩擦系數均較高，說明銅粉和石墨應該配合使用；當銅粉15份、石墨60份時，銅粉30份、石墨30 - 40份時，銅粉60 、石墨15 - 30份時，摩擦系數均具有較低值；純聚四氟乙烯樹脂在空氣冷卻時結晶度最大，磨損量也是三者中最大的；同時，固體潤滑劑試樣在空氣冷卻時的磨損量也是三者中最大的：不論是固體潤滑劑與45 #鋼軸配副或是固體潤滑劑鑲嵌入銅套后與gcr15鋼軸配副，在金屬表面均可形成潤滑轉移膜，從而減少金屬摩擦副表面間的直接接觸，大大延長其使用壽命;轉移膜中主要含有較多的石墨、少量聚四氟乙烯、 moo 。 -
3 ) a 3 - d geometry and finite element model of the assembly of the obturator of the breech mechanism is established. quasi - static and dynamic finite element analysis of stiffness, strength and obturating performance of the obturator of the breech mechanism is carried out, based on elastoplastic theory and multi - body contact algorithm, and the simulation results coincide with experimental results, further, th e effect of friction factor on its obturating performance is investigated
建立了炮閂閉氣結構的三維裝配體幾何實體模型和有限元模型，對炮閂閉氣結構剛強度和閉氣性能進行了準靜態及動態多體接觸彈塑性有限元分析，分析結果與試驗結果相吻合，進一步研究了摩擦系數對其閉氣性能的影響。 -
Statistical characteristic of fatigue strength of contact wires was obtained by comprehensively considering such coefficients as stress concentration, size and surface quality
綜合考慮了接觸線應力集中系數、尺寸系數、表面質量系數和材料疲勞強度的影響，得到了接觸線疲勞極限的統計特徵。 -
This paper mainly discussed the optimization design of two - stage star - type gear transmission system. it covered the two sides : one - stage gear transmission and two - stage gear transmission. on the basis of their analysis and research, the mathematic models are created which include the objective functions of minimum volume and minimum center distance, the constraints of contact strength, bend strength and scuffing strength
本文主要研究了航空發動機星型齒輪傳動系統的優化設計，對單級齒輪傳動和兩級星型傳動都進行了深入的分析和探討，分別以系統體積最小和中心距最小為目標函數，以齒輪的接觸強度、彎曲強度、膠合強度等為約束條件，建立了完整的數學模型。 -
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。 -
Department perfect test, which can be made into various mechanical properties such as : tension tests, strength tests slide, terminal testing ; electrical performance test items include : insulation resistance testing, contact resistance testing, testing withstand voltage, high and low test, solderability test, durability testing, vibration - resistant testing, life test
完善之測試部，能作各項機械性能測試如:拉力測試、插撥力測試、端子強度測試；電氣性能測試項目計有:絕緣電阻測試、接觸電阻測試、耐電壓測試、高低測試、可焊性測試、耐久性測試、耐振測試、壽命測試等 -
Abstract : this paper derives thecalculating formulas to the contact strength and oil - film thickness of the involute spur gear according to hydrodynamic lubrication principle. through check with test, shows that they may rully replace now available hertz formula and dowsonformula respectively
文摘:根據流體動力潤滑原理，推導出了漸開線直齒圓柱齒輪接觸強度及油膜厚度的計算公式，通過實驗驗證，說明它們可以完全分別代替現有的赫芝公式及通森公式。 -
The effect of the friction between teeth on the contact fatigue strength of the tooth surfaces of a gearing
齒間摩擦對齒輪輪齒表面接觸疲勞強度的影向 -
Hero of city of yin of peaceful wave city becomes plant of hydraulic pressure component only then achieve 1996, it is home famous the contact of hydraulic pressure tube that has actual strength, transfer one of professional production manufacturer of contact and assembly of hydraulic pressure tube ; company headquarters is set in ning bo, existing employee many 400, subordinate company has hubei huang shijie to become hero of limited company of hydraulic pressure equipment, jiangsu to create limited company into hydraulic pressure equipment ; shanghai agency, guangzhou agency
寧波市鄞州雄成液壓元件廠始創於1996年，是國內著名並有實力的液壓軟管接頭、過渡接頭和液壓軟管總成的專業生產廠家之一；公司總部設在寧波，現有員工400多名，下屬公司有湖北黃石捷成液壓器材有限公司、江蘇雄成液壓器材製造有限公司；上海辦事處，廣州辦事處。 -
Male plug, works of lathe spining alum. alloy shell, polished beryllium copper for strength and secure contact, with platinum plated then palladium plating. body made of pbt with the high rigidity glass filler
車床加工鋁殼，鈹銅拋光鍍白金鍍鈀金插片，公插，本體pbt加堅硬玻璃，不銹鋼固定螺絲，禮盒包裝 -
This 3d contact finite element analytical method can also be applied to the contact strength analysis of other mechanical products and can be regarded as references for stepping up the strength analyses of mechanical products from single part to entire assemblage
該三維接觸有限元分析方法也可用於其它機械產品的接觸強度分析，為機械產品由單個零件的強度分析提升到裝配體的強度分析提供參考。 -
By the use of contacting unit in the ansys, this paper tried to carrying out a detailed analysis on the contact strength between the vane and the impeller of a steam turbine, and at the same time to probe into several problems of difficulties and essentialities related to convergence of iterative calculation and reliability of calculated result
嘗試用ansys中的接觸單元對汽輪機中葉片與葉輪的接觸強度進行詳盡的分析，同時探討了與迭代計算收斂性及計算結果可靠性有關的幾個難點和要點問題。
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