fatigue value 中文意思是什麼
fatigue value
解釋
疲勞極限值-
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。 -
Abstract : based on the analysis of the main failures discovered in pavement on steel deck plate and the demanding service condition of the pavement on steel deck, high - temperature rutting test, low - temperature bending test and controlled stress flexural fatigue test are used to study the performance of asphalt mixtures modified by epoxy resin including high - temperature stability, low - temperature cracking - resistance, and fatigue cracking - resistance, which are served to evaluate the modification effect of epoxy resin of different contents. with the addition of epoxy resin, all the three performances are improved greatly. however, when the amount of epoxy resin added is over a certain value, the modification effect will be stable with no extra benefit detected. finally, in terms of the properties of the three respects, 20 ?, 30 ?, 30 ? are given separately as the proposal adding contents
文摘:在分析鋼橋面鋪裝層主要病害和特殊工作環境的前提下，分別採用高溫車轍試驗、低溫小梁彎曲試驗和控制應力小梁彎拉疲勞試驗，研究了不同環氧樹脂摻量下的環氧樹脂改性瀝青混合料的高溫穩定性、低溫抗裂性和抗疲勞性能.試驗結果表明:環氧樹脂對這3個方面都有很大的改進效果，但改性效果和樹脂的添加量並不是一個無限遞增的關系，當添加量超過一定數值以後，改性的效果將趨于平穩.最後就高溫、低溫、疲勞3個方面分別提出環氧樹脂添加量為20 ? ， 30 ? ， 30 ?的建議值 -
Based on the analysis of the main failures discovered in pavement on steel deck plate and the demanding service condition of the pavement on steel deck, high - temperature rutting test, low - temperature bending test and controlled stress flexural fatigue test are used to study the performance of asphalt mixtures modified by epoxy resin including high - temperature stability, low - temperature cracking - resistance, and fatigue cracking - resistance, which are served to evaluate the modification effect of epoxy resin of different contents. with the addition of epoxy resin, all the three performances are improved greatly. however, when the amount of epoxy resin added is over a certain value, the modification effect will be stable with no extra benefit detected. finally, in terms of the properties of the three respects, 20 ?, 30 ?, 30 ? are given separately as the proposal adding contents
在分析鋼橋面鋪裝層主要病害和特殊工作環境的前提下，分別採用高溫車轍試驗、低溫小梁彎曲試驗和控制應力小梁彎拉疲勞試驗，研究了不同環氧樹脂摻量下的環氧樹脂改性瀝青混合料的高溫穩定性、低溫抗裂性和抗疲勞性能.試驗結果表明:環氧樹脂對這3個方面都有很大的改進效果，但改性效果和樹脂的添加量並不是一個無限遞增的關系，當添加量超過一定數值以後，改性的效果將趨于平穩.最後就高溫、低溫、疲勞3個方面分別提出環氧樹脂添加量為20 ? ， 30 ? ， 30 ?的建議值 -
Traditionally, the gauge is recognized by human eyes. however, some of the subjective factors such as : observation angle, observation distance and fatigue may have effects on the value
這種判別方法受人的主觀因素如人的觀測角度，觀測距離及疲勞強度等影響，誤差很大，可靠性不高。 -
According to our experimental investigations of varying load amplitude, it was found that the phenomena of fatigue crack growth retardation occurred for pmma material following a high overload cycle exerted among the regular constant amplitude load cycles, the ratio of peak value of overload to that of the regular cycles should be over at least 1. 35 to make the retardation taking effect. the experiment scheme for measuring the shutting - off ratio of overload ( defined as the overload ratio when da / dn < 10 - 7 / cyc. )
本文試驗分析了變幅載荷對裂紋擴展的影響，證實了有機玻璃也存在超載遲滯現象，通過金相觀察分析，提出超載遲滯的過程實際上是裂紋前緣萌生新的裂紋的過程的觀點，同時提出超載遲滯的合理的解析，並且給出超載遲滯比，為隨機載荷下疲勞擴展模型的建立提供了一個重要的參數。 -
Now, it contracted obviously the disparity with whole country advanced level and raised the testing accuracy and research levels that the research institute whose experiment area is big and the devotion value is high, purchased lately a number of advanced experiment instrument equipments and software, for instance, model machine quickly, tri - coordinate measure machine, laser 3d scanners, multicenter vibration test and analysis system, electronic all - powerful experiment machine, hydraulic presses servo fatigue test machine, festo machine electricity to imitate manufacture system, the software of cad / cam / cae and so on
如今，研究所的實驗面積大、投入價值高，新購置了快速成型機、三坐標測量機、激光三維掃描儀、多通道振動測試與分析系統、電子萬能試驗機、液壓伺服疲勞試驗機、 festo機電模擬生產系統、 cad / cam / cae軟體等一批先進的試驗儀器設備和軟體，明顯縮小了與全國先進水平的差距，提高了試驗的準確性和科研水平。 -
There has very important practical value to study the statistic character of fatigue load on steel crane structures and of fatigue resistance on all kinds of structural joints and to analysis the fatigue reliability of structural detail, which can be used to fatigue safe control. the fatigue reliability theory and fatigue safe control applications on steel crane structures in service are studied based on the structural reliability theory in this paper. the major contents are mainly summarized as follows : 1
研究鋼結構吊車梁承受的疲勞荷載與各種構造連接的抗力統計特性，分析構造細節的疲勞可靠性，進而對其進行疲勞安全控制，對于在役鋼結構吊車梁的鑒定與加固具有非常重要的實用價值與指導意義：本文以結構可靠度理論為基礎，對在役鋼結構吊車梁的疲勞可靠性、安全控制應用與維修加固決策進行了研究，研究的內容包括以下幾個方面。 -
Main conclusions of this study are : ( 1 ) driving fatigue is one of the main factors of the traffic accident and longtime driving is one of the main factors of driving fatigue ; ( 2 ) the ability of reacting and paying attention will deteriorate after driving fatigue ; ( 3 ) reaction time and the value of paying attention to different things can be used as indicators to evaluate driving fatigue, and the level of subjective feeling can be used as assistant indicator to evaluate driving fatigue ; ( 4 ) some characteristics of driving fatigue emerge after driving 8 to 12 hours
論文的主要結論有: （ 1 ）疲勞駕駛是造成交通事故的主要原因之一，而長時間駕駛是造成營運駕駛員疲勞的主要原因之一; （ 2 ）駕駛員疲勞后反應能力和注意能力會顯著降低; （ 3 ）反應時和注意分配值可以作為駕駛員疲勞程度的測評指標，疲勞主觀評估等級可以作為駕駛員疲勞程度的輔助測評指標; （ 4 ）駕駛員在累計駕駛8 12小時之間開始顯現出駕駛疲勞的部分特徵。 -
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。 -
Fatigue strength coefficient decreases linearly during the cyclic course ; fatigue strength exponent increases ; fatigue ductility coefficient first goes up till the maximum value at 50 % total life, and then goes down ; fatigue ductility exponent decreases during the first half cycle till its minimum value at 50 % total life and then increases in the rest cycle course ; cycle strength coefficient and cycle strain hardening exponent both decrease during the total cycle course
結果表明： 6個基本疲勞特性參數在循環過程中都呈顯出規律性變化。疲勞強度系數呈線性減小趨勢；疲勞強度指數呈線性增大特徵；疲勞延性系數是一個先增后降的過程；而疲勞延性指數隨循環進行由初始減小到逐漸增大；循環強度系數和循環應變硬化指數在整個循環過程中都趨于減小。 -
These rules consist of the total fit, the mathematics and fatigue physics, and the safety in tail predictions. an analysis of the test s - n data of 16mn steel weld joints reveals that the four models are reasonable if only considering the total fit as the conventional method did. but if by the present three rules, the appropriate models should be the normal or the extreme maximum value
根據先前提出的有限數據下良好假設分佈的確定方法，包括三個原則，即假設分佈形狀與誤差數據真實分佈形狀的一致性、預測的總體擬合效果、與疲勞失效機制的一致性和尾部預測的安全性，通過對線性均值s - n曲線擬合16mn鋼焊接頭s - n數據誤差的統計分析，說明應用一般推斷方法， 4種分佈都可合理地作為數據的統計模型，綜合考慮三原則后，極大值和正態分佈是可能的良好假設分佈。 -
With the experiment of surface crack growth of bhw - 35 weld metal, the law of the surface crack shape variation when it grows was obtained, and the law of surface crack growth rate was also gotten. these direct the evaluation of the surface crack fatigue growth life and the critical value of its length
對bhw - 35鋼焊縫材料進行表面裂紋擴展試驗研究，得到裂紋的擴展形貌變化規律，並對其疲勞擴展壽命進行預測研究，為汽包下降管角焊縫部位的表面裂紋擴展壽命預測提供依據，同時也確定了其表面裂紋擴展的臨界值。 -
By fatigue test of 70 beams measured 150x150x550, this paper study fatigue of sfrc. firstly, this paper get fatigue life and fatigue strain of the beams by test, validate the better fatigue value of sfrc by the contrasting test of plain concrete beams
首先，本文通過試驗，得到了層布式鋼纖維混凝土在不同應力水平下的疲勞壽命及疲勞應變；並做了素混凝土的對比疲勞試驗，驗證了層布式鋼纖維混凝土較素混凝土為優。 -
This paper, regarding the asphalt pavement in the zhoukou region as the study object, according to the prevalent norms ( specifications for design of highway asphalt pavement ), with the beginning of the pavement performance and the transportation investigation, totally and systematically analyzes the traffic parameters and the destroying reason of pavement at the early stage in the point of fatigue property and limit strength, gives the concepts and methods of the growth rate of equivalent axle load action time, seasonal modification factor and overload factor, proposes the method of axle load conversion on the condition of heavy loading. on this basis, it proposes the design method adapting to asphalt pavement construction, explains the steps of thickness computation of construction with the combination of engineering example, finally verifies thedesign method in the paper by test road. theory and practice both prove that the reasonability of pavement structure style and the reliability of design method in the paper can adapt to the present heavy loading and overloading traffic conditions, have highly theoretical and practical value
本文以周口地區瀝青路面為研究對象，以現行《公路瀝青路面設計規范》為依據，從路面使用性能和交通特徵的調查入手，從疲勞特性和極限強度出發分析了路面早期破損的原因，全面系統地進行了交通參數的分析，提出了當量軸次增長率、季節修正系數和超載系數的概念和方法，並提出了重載交通的軸載換算方法。在此基礎上，針對超載、重載交通從結構組合設計、結構厚度計算（包括疲勞強度標準和極限強度標準）等方面提出了適宜的瀝青路面結構設計方法，並結合工程實測，說明了結構層厚度計算的具體步驟，最後通過試驗路驗證本文提出的設計方法。理論與實踐均表明，本文提出的路面結構型式合理、設計方法可靠，能適應目前重載、超載交通的狀況，具有較高理論與實用價值。 -
As we know, manual decision method estimate specific value of stained area, and so in a large quantity of measuring, because of human factor of fatigue and so on, maybe generate misjudgement condition, computer can probably reduce productive probability of the mistake
人工檢瀏方法是大概的估計染色的面積比。在大量的檢瀏中，由於疲勞等因素可能產生人工誤判等情況。計算機圖像識別和理解是以像素的個數表示區域的面積，保證了檢測精度。 -
2, the friction coefficient at the pitch point is not a monotonic quantity of the rational speed or the load, instead of having a maximum value. and the value of the friction coefficient is very small, its order of magnitude only being 10 - 3. so, it is reasonable that the friction force on teeth surfaces are ignored when the gear - driven contact fatigue strength is designed
2 、當輪齒在節點嚙合時，隨著轉速或載荷的變化，齒面摩擦系數並非呈單調變化，而是存在極值點;節點嚙合處的齒面摩擦系數很小，其數量級為10一， ，因此在做齒輪強度設計時，忽略齒面摩擦力的影響是有理論根據的。 -
The method to obtain a s - n curve is a cost and difficult work, statistic is applied very much. the bending moment is representation of fatigue value in test
通過疲勞試驗和推導計算，確定了曲軸復合強化工藝方案為曲軸軸頸淬火加圓角滾壓復合強化工藝。 -
Electrolytic low content titanium aluminum alloy and electrolytic al - si - ti alloy are two new alloy materials produced by new technique of production. it ' ll have very important practical value and referential significance in evaluating the properties of the two new materials and generalizing the new technique of production in industry to study and compare the fatigue properties and relevant mechanical properties of the applied cast alloys made from them and pure aluminum comprehensively
電解低鈦鋁合金和電解鋁硅鈦合金是兩種新型工藝生產的鋁合金，對以二者和純鋁為基本原料制備的應用鑄造合金的力學疲勞性能進行綜合的對比研究，將會對客觀評價這兩種新材料的性能、在工業生產上推廣新工藝，具有非常重要的現實意義和參考價值。 -
Statistics analysis shows that, the maximal corrosion depth on steel pressure vessels and pipelines is subject to - type max value distribution, and the corrosion fatigue life belongs to - type minimal value distribution
摘要在已有研究成果的基礎上，藉助數理統計方法，分析認為介質及環境對鋼制壓力容器與壓力管道的最大腐蝕深度符合型極大值分佈，耐腐蝕壽命屬于型極小值分佈。 -
The formulas and improving algorithm of bss in this paper, which have reference value for new researcher. the software package of bss and the stator vane ’ s vibration and fatigue analysis software as the analysis tools can be operate more easily
本文所推導的盲源分離的理論公式以及對演算法的改進，對後面的跟進研究者具有一定的參考價值。本文開發的盲源分離軟體包為盲源分離的應用提供了有價值的工具。
分享友人