疲勞壽命 的英文怎麼說
中文拼音 [píláoshòumìng]
疲勞壽命
英文
endurance failure-
By means of carrying out parameterization on finite element model of certain punching - welding bridge housing and through optimization analysis, this paper realized the light weighted optimization design of punching - welding bridge housing under the conditions of letting the bridge housing to satisfy the demands of perpendicular bending rigidity, the perpendicular bending strength and the perpendicular bending fatigue life
摘要通過對某沖焊橋殼的有限元模型進行參數化，經過優化分析，使得橋殼在滿足垂直彎曲剛度、垂直彎曲強度和垂直彎曲疲勞壽命的條件下，實現了沖焊橋殼的輕量化設計。It can be seen from the results that the control beam had good plastic property in the static failure experiment after two million fatigue loading circles. all specimens with corroded main bars were failure under the fatigue loads within one million fatigue circles. fatigue lifespan of reinforced concrete beam was sharply shortened after main bars corroded in it and the beam was destroyed bristly without any prediction
試驗結果表明，振動測試不能夠對銹蝕鋼筋混凝土梁的疲勞破壞做出可靠的預測;對比梁在經過200萬次疲勞循環加載后的靜力試驗中仍表現出良好的延性破壞特徵;銹蝕梁在100萬次疲勞循環內均因主筋疲勞斷裂而破壞;主筋銹蝕使得梁的疲勞壽命急劇縮短;梁發生脆性破壞而沒有徵兆。Abstract : the factors to influence fatigue life of chain plate areconcluded by experimental methods. the factors to prolong life of chain plate are analyzed by theoretical methods. the maximum value of crushing hole in 16a roller chain plate is calculated by finite element method
文摘:用試驗方法確定了擠孔對鏈板疲勞壽命的影響，從理論上分析了在最佳擠孔量下，鏈板疲勞壽命提高的因素，用有限元法計算了16a鏈板的最佳擠孔量，並與試驗結果進行了比較。The research is that : after the same cyclic number of loading times, the steel stress of reinforced beams was much smaller than that of common beam ; the deflection of reinforced beams was decreased by 40 % - 50 %, therefore, the anti - transformation of the reinforced beams is enhanced greatly
研究發現：經過相同次數的疲勞荷載作用后，完好加固梁的鋼武漢理工大學碩士學位論文筋應變小於未加固梁，加固梁的變形減少了40 %一50 % ，加固梁的疲勞壽命提高t60 % ~ 80 % 。The fatigue behavior of strength, stiffness, and deformation of concrete is analysed systematically. the fatigue equation is established. the empirical expressions of the total longitudinal strain and the elastic modulus are given, and the relationships between the increasing rate of the total second - stage strain and the decreasing rate of the elastic modulus with the cyclic number are obtained
系統地分析了砼抗拉、拉-壓疲勞強度、剛度、變形規律；建立了相應的s - n關系，提出了縱向總應變、彈性模量的經驗公式，及其第二階段總應變增長率、彈性模量衰減率分別與疲勞壽命的關系式。First, the theory of fretting wear and studies on fretting fatigue were introduced and the parametric method was used in the process of creating the model of dovetail joints in ug software. the elastic contact problem is analyzed in finite element method ( fem ) and is used to the parameters " distribution and contact stress of the joint are obtained on the base of ansys code. with the effect factor of load frequency, the prediction method of fretting fatigue life of dovetail joint under low and high / low cycle complex load is proposed
本文介紹了微動損傷的機理和微動疲勞壽命的研究方法；利用ug軟體對燕尾榫聯接結構創建了參數化實體模型；基於ansys軟體平臺求解彈性接觸問題，獲得了榫聯接結構接觸應力及接觸狀態量的分佈；在已有微動疲勞壽命預測模型的基礎上，引入載荷頻率影響因子，對低周、高低周復合載荷作用下的燕尾榫聯接結構進行了微動疲勞壽命的預測，與試驗結果對比表明採用本文提出的方法預測榫聯接結構的微動疲勞壽命是有效的。The active vibration control aimed at aircraft empennage has huge practical values in the aspects of adding the fatigue life of vertical tail, increasing the capability and availability of the aircraft, reducing the through - life - support costs and so on
飛行器垂直尾翼的振動主動控制對于提高尾翼的疲勞壽命、飛行器的機動性以及減小飛行器的維護成本具有較大的實際意義。Empirical distribution function of fatigue life based on harmonic mean
基於調和均值的疲勞壽命經驗分佈函數4. the relation between re - bars strains and cycle index n is obvious. the larger the is, the shorter the n is, and the relation of them is inverse ratio
（ 4 ）鋼筋應變與試件梁的循環次數n之間有規律性，應變越大，疲勞壽命越短，兩者成反比關系。Analysis to the probability distribution of leaf spring fatigue life
鋼板彈簧疲勞壽命概率分佈分析For rotor steel ( 30crlmolv steel ), the tests of low - cycle fatigue property are done under different temperatures. the fatigue life under different temperatures is researched to make up for the defects of the testing for foreign similar materials. when pull - stretch data is attempted to evaluate low - cycle fatigue data, the result shows that four - point associated method in middle - low life zone is done well under room temperature, but there are large errors of four - point associated method and general - slope method under other temperatures
在本文中，通過與國外同類材料的性能進行比較，國產材料與國外材料共有的材料特徵基本相同；對轉子鋼（ 30crlmolv鋼）進行了不同溫度下的低周疲勞性能實驗，研究其在不同溫度下疲勞壽命，以彌補國外對同類鋼材測試的不足；採用拉伸數據預測低周疲勞壽命時發現，室溫條件下用四點關聯法在中低壽命區預測較好，在高溫條件下四點關聯法和通用斜率法都有較大誤差，需要進行改進。Moreover, base on lots of test data, fatigue life estimation is finished by help of miner, opposite miner rule and fracture mechanics theory. theoretic results and test data are well fit to each other
另外，本文在大量試驗數據的基礎上，依據miner法則、相對minar法則以及斷裂力學理論，對40cr高強螺栓的疲勞壽命估算進行了系統研究，理論分析結果與試驗值的規律性吻合較好。In second part, a complete design and implement platform was constructed for sonic fatigue life analysis with the oriented - object programming design technique, as a replacement of nomograph method
在本文的後半部分，為了代替目前常用的列線圖求解聲疲勞響應方法，著重運用面向對象程序設計技術，完成聲疲勞壽命預測及分析平臺的設計和實現。Being deficient in sonic fatigue testing and owing to the limitations of nomograph method application to the sonic fatigue life prediction, an analysis software program was designed and worked out in present thesis, based on the research achievement in prediction of sonic fatigue life, which strong function, easy use and great extensive capabilities
本文針對現階段聲疲勞試驗的不足，以及工程中常用的諾謨圖方法的局限，整理了目前比較成熟的典型蒙皮壁板聲疲勞壽命研究成果，提出設計並編制了一套功能強、易於使用，可擴展性好的聲疲勞壽命預測及分析平臺。Nowadays, company has been equipped with perfect gas spring assembling lines, microcomputer controlling function testing platforms, fatigue longevity test - beds, high and low temperature function concussion test - beds and sodium fog experiment tables
公司現已配備有性能完善的氣彈簧裝配流水線、微機控制性能測試臺、疲勞壽命試驗臺;高低溫性能沖擊試驗臺、鹽霧實驗臺等專用設備。Roller bearings, load ratings and fatigue life for
滾柱軸承額定載荷和疲勞壽命Zircaloy - 4 sheet, which was cold - worked followed by recrystallization annealing, exhibits longer lcf life in the rolling direction than that in the transverse direction, and the fact that difference in lcf life between both directions becomes larger as the range of plastic strain becomes lower can be attributed to the texture effect, p - solution treatment deteriorates the alloy ' s lcf property because the treatment lowers the average value of alloy ' s schmid factors, and the subsequent annealing - treatment in a - phase range has a impact on the lcf properties, i. e. the subsequent annealing - treatment at 500 ? for 1. 5h results in better property than that at 750 for 1. 5h, which comes mainly from the fact that the alloy annealled at 500 for 1. 5h has lower amount of the precipitate particles than the alloy annealled at 750 for 1. 5h
對于冷加工后經再結晶退火處理的zr - 4合金，軋制方向的低周疲勞壽命比橫向要大。隨著_ p的降低，兩個方向的低周疲勞壽命的差別相應增加，這是由於合金中存在織構的緣故。冷加工后經再結晶退火處理的zr - 4合金在固溶處理后，抗疲勞性能明顯降低，這主要是由於固溶處理降低了合金的schmid因子；固溶處理后在相區的退火對疲勞性能有影響，即500 1 . 5h退火的抗疲勞性能要優於750 1 . 5h退火，這主要與500 1 . 5h退火的合金中沉澱相粒子的數量較少有關。Second, carried out the fatigue life test of the truck ' s front axles adopted grouping fatigue life test method, calculated the results on theory of probability stats, linear fitted the fatigue life data by means of the basquin equation and least squares method, acquired the mathematical model of s - n and p - s - n curve of the front axles
其次，採用成組試驗法，對汽車前橋進行了疲勞壽命試驗，藉助概率統計方法對試驗結果進行了分析計算，得到了各試驗載荷下的疲勞壽命的正態分佈的均值和標準差，採用basquin關系式和最小二乘法對疲勞壽命數據進行線性擬合，得到了前橋的s - n和p - s - n的關系。Study on the fatigue life of the tunnel bed structure under train loads
列車荷載作用下隧道鋪底結構疲勞壽命分析A new prestressed bowshaped structure strain multiplier was designed to solve problem which strain amplitude is much lower than the threshold of fatigue life gage, and this strain multiplier take the advantages of entire structure, lower stiffness, good reliability and convenience to use
設計出一種弓形預應力結構應變倍增器，解決了橋梁應變幅值遠遠低於疲勞壽命計門檻值這一關鍵問題，此倍增器具有整體性強、剛度低、可靠性好、使用方便等優點。分享友人