fatigue loads 中文意思是什麼
fatigue loads
解釋
交變荷載-
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。 -
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 -
It shall be carefully considered when the equi - area method of reinforcement is used for large opening, external pipe loads, close to non - continuous area or fatigue loads
這對推動壓力容器行業的技術進步、提高本企業的技術水平，將會起到積極的作用。 -
3, analyzing the stress field of the aero - engine case under the given loads, the fatigue life of the case is predicted through the presented fatigue model and the method of " nominal stress "
用該模型對孔徑為5mm層合板的s ? n曲線進行疲勞壽命預測及試驗驗證。 3 、首次對某型發動機t300 kh - 304復合材料機匣的主鋪層在給定工況下的疲勞壽命進行預測。 -
The results of wind forces acting on high buildings are the fatigue failure by vibrations, local failure under pressure and toppling failure etc. wind forces are one of design loads on towering structures, high buildings and long - span bridges, sometimes even be decisive function
風對建築結構的作用表現為結構的振動疲勞破壞、局部受壓破壞和整體傾覆等，風荷載是高聳結構、高層建築和大跨度橋梁的重要設計荷載之一，有時甚至起決定性的作用。 -
( 3 ) the equivalent stress, which is from the coefficients for the spectrum - loads and miner linear accumulated damage rule, an approach for material probabilistic fatigue strength for spectrum loads is suggested. this approach are established by the composed of p - c - s - n curves for extreme maximum model
（ 3 ）根據譜載荷系數和miner線性累積損傷準則得到的譜載荷下的當量應力的關系，與極大值模型的p - c - s - n曲線相結合，提出了譜載荷下材料概率疲勞強度的表達式。 -
3. the mid - span deflection of slight corrosion specimens is smaller than that of non - corrosion specimens on the static loads and the fatigue loads ; the maximum crack width of slight corrosion specimens is larger than that of non - corrosion specimens ; fatigue life of slight corrosion specimens is shorter than that of non - corrosion specimens ; the corrosion of re - bars is a sensitive factor to fatigue life
（ 3 ）輕微銹蝕試件梁的跨中撓度在靜載和循環荷載下比未銹蝕梁小;輕微銹蝕試件梁的最大裂縫寬度比未銹蝕試件梁的最大裂縫寬度大;輕微銹蝕試件梁的疲勞壽命比未銹蝕試件梁的疲勞壽命降低，鋼筋銹蝕是疲勞壽命的敏感因素。 -
Third, mensurated the front axle ' s load - time history when truck was running on general tar - paved roads, mountainous roads and the proving ground enhancement roads, second sampled and pretreated to the load - time history with rpc software of mts corporation, acquired the relationship of the frequence of the mean and amplitude load, obtained the zero mean equivalent loads using goodman experiential fatigue equation, acquired the weibull distributing functions of equivalent loads of respective roads
第三，測定了汽車前橋在一般瀝青公路、山區公路和試驗場強化試驗路面的載荷時間歷程。對載荷時間歷程進行了二次采樣和數據預處理。採用雨流計數法得到了各路面的載荷均、幅值的頻次關系，並根據goodman經驗疲勞公式，得到了零均值的等效載荷及相應的頻次。 -
Fourth, according to the weibull distributing functions of equivalent loads, calculated the max loads by expanded sample method, acquired eight routine loads spectrum of each roads taking advantages of the connover classification method, calculated the respective enhancement coefficient in principle of amended miner linear accumulated fatigue damage rule, by the comparative norm of general tar - paved road, educed the mathematical model of calculating enhancement coefficient of synthesized roads
利用數理統計的方法得到了各路面的等效載荷的weibull分佈函數。第四，根據各路面的等效載荷的weibull分佈函數採用擴展樣本法求得了各路面的極值載荷，按照connover的分級法得到了各路面的八級程序載荷譜。以一般瀝青公路為比較基準，採用修正的miner線性累積損傷理論，根據前橋的s - n和p - s - n關系式得到了各路面的強化系數，建立了綜合路面的強化系數計算的數學模型。 -
During aircraft take - off and landing phases, the dynamic loads and vibrations caused by landing impact and the unevenness of runway will result in airframe fatigue, discomfort of passenger and the reduction of the pilot ' s ability to control the aircraft
在飛機起飛和著陸過程中，由著陸沖擊和跑道不平引起的沖擊載荷和振動，會造成飛機機體疲勞損傷、乘客不適及地面駕駛操縱能力的降低。因此，在設計飛機起落架緩沖器時，必須限制起落架傳遞給飛機的沖擊載荷。 -
The main contents of the dissertation are presented as follows : 1. more agreements will be obtained for prediction of structural fatigue life if the difference between the experimental loads and the in - service loads can be considered adequately
全文主要研究內容與成果如下: （ 1 ）充分考慮實驗室試驗載荷與實際服役載荷的差異，將能更準確地預測結構的壽命。 -
Beams are researched, and the relation between strains of corroded re - bars and fatigue life of beams are obtained. the main research contents and conclusions are as following : 1. under the fatigue loads, the overstrain of concrete approximately coincidences three stages strain development and accumulation rule, and the mechanical property of concrete is deteriorated
鑒于實際工程中大量存在腐蝕鋼筋混凝土結構承受反復荷載作用，但其力學性能研究不多的問題，本論文進行了銹蝕鋼筋混凝土梁抗彎疲勞試驗，研究了應力比和鋼筋銹蝕率對銹蝕鋼筋混凝土梁抗彎疲勞性能的影響，得出了銹蝕鋼筋的應變與構件疲勞壽命之間的關系曲線，主要研究內容及結論如下: （ 1 ）在循環荷載下，混凝土殘余變形基本符合三階段變形規律，力學性能劣化，疲勞損傷積累。 -
In the master thesis, the fatigue characteristics of the ferroelectric films under thermal load and electrical load were investigated. the thermal load was induced by a pulse laser beam of nd : yag and the electrical load was made by rt6000s ferroelectric tester t o act on the films respectively. the effect of thermal or electric loads on the films properties was discussed
本文對鐵電薄膜在循環的熱載荷和電載荷作用下的疲勞特性進行了研究，分別用nd ： yag脈沖激光器模擬熱載荷、用rt6000s鐵電測試儀模擬電載荷作用於鐵電薄膜，根據實驗結果探討了這兩種載荷對鐵電薄膜性能的影響。 -
Integral fatigue analysis of single - layer latticed cylindrical shells under stochastic wind loads
隨機風荷載下單層柱面網殼的整體疲勞分析 -
Three advanced issues are studied. they are the statistical distributions for the errors of the average s - n relation fitting into the test data, the maximum value model for the probabilistic model, and the material probabilistic fatigue strength under spectrum - loads
論文圍繞均值s - n曲線擬合s - n數據誤差的統計分佈模型、測定概率s - n曲線的極大值模型和基於極大值模型的譜載荷下材料的概率疲勞強度的測定三方面，開展了較為深入地研究。 -
In industry, about over 80 % damages of the oscillatory components under dynamic loads are caused by the fatigue failure, but with traditional ndt methods, the damages ca n ' t be tested and evaluated before the fatigue crack coming into being, which result in serious accident in the long period running of these equipments
工業生產中，約有80 %以上受動載荷作用的振動構件破壞是由疲勞失效引發的，而傳統的無損檢測技術無法解決疲勞裂紋形成前損傷的檢測和評價問題，造成設備在長周期運行過程中發生嚴重事故。 -
Researches show that high dynamic stress caused by hydraulic loads is the most important reason of the fatigue and cracks of the runner
研究表明，水力激勵引起的混流式水輪機轉輪葉片動應力是引起葉片疲勞破壞的主要原因之一。 -
The s - n curve, the mathematical relationship of bend fatigue strength or life to strengthening loads and strengthening cycles, the maximum increments of fatigue strength and life were obtained by experimental digital processing
通過對試驗數據的處理，得到了兩種結構彎曲疲勞強度的s - n曲線、彎曲疲勞強度和疲勞壽命與強化載荷、強化次數之間的數學關系，以及經過低載強化后彎曲疲勞強度和疲勞壽命提高的最大幅度。 -
According to european standard of wind turbine authentication, fatigue loads are selected by this dissertation as the main subject. so, a system of fatigue loads is designed. as the most important components, loads and life prediction of blades and tower of wind turbine are measured
結合國外風力發電機組檢測認證的項目內容，本文選取了主要參數中的疲勞載荷構建了風力發電機組的疲勞載荷測試系統，重點是對風力發電機葉片和塔架做了疲勞載荷分析和壽命預測。 -
How to deal with fatigue loads of main mechanism of wind turbine is always an important problem for designers and manufacturers. and for different location, various terrain conditions, with uncertainty of weather, all these increase difficulties for lay - out men and maintenance personnel when they check and measurement huge wind turbine
而在大型風力發電機組的運行和維護過程中，由於其所安裝位置不同，運行情況千差萬別，再加上天氣情況的不確定性，使設計人員、維護人員以及檢測人員很難很好的跟蹤和了解具體部件的工作和損壞情況。
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