疲勞強度系數 的英文怎麼說

中文拼音 [píláoqiángdùxìshǔ]
疲勞強度系數 英文
fatigue ratio
  • 疲 : 形容詞（疲乏; 勞累） tired; weary; exhausted
  • 勞 : Ⅰ動詞1 （勞動） work; labour 2 （煩勞） put sb to the trouble of; trouble sb with sth : 勞您費心...
  • 強 : 強形容詞（強硬不屈;固執） stubborn; unyielding
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 疲勞 : 1. （疲乏勞累） tired; fatigued; weary; become fagged 2. （機能或反應能力減弱） fatigue; strain 3. [物理學] fatigue
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. Based on the aircraft structure fatigue theory, the article discussed the theoretical basis of methods that are usually used for aircraft structure fatigue crack - forming life estimation, i. e. the stress severity factor approach ( normal stress approach ), the local stress & strain approach, detail fatigue rating approach ( dfr ). also the processes of life estimation of these approaches are studied in the article

    文章在簡要介紹飛機結構疲勞強度理論的基礎上，對目前飛機結構勞疲勞裂紋形成壽命估算常用的應力嚴重系數法（名義應力法） ，局部應力應變法，細節疲勞額定值dfr法的理論依據作了較詳細的論述，同時對這些估算方法進行壽命估算的過程與步驟也作了詳盡的闡述。
  2. Lastly, with the fatigue equation, the paper establishes the fatigue stress coefficient which is used in the load stress calculation for lean concrete as undersurface of cement concrete pavement, and the structure coefficient of flexural tensile strength which is used in the flexural stress check for lean concrete as base of asphalt pavement

    利用得出的疲勞方程，建立貧混凝土作為水泥混凝土路面下面層荷載應力計算的疲勞應力系數，以及作為瀝青路面基層時，進行層底彎拉應力驗算的彎拉強度結構系數。
  3. 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。
  4. 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。
  5. The intention of this paper is to develop a set of testing system, which has high efficient and reliable performance and advanced technology. it is applied in testing extrusion pressing of new type elevator wire rope tie - in in its making process and tensile strength, fatigue strength of tie - in. then to test the validity of design theory of the new type tie - in by analyzing the testing data and grope for new theory on and on

    本課題研究的目的是開發一套高效可靠、技術先進的測試系統，用於測試新型電梯鋼絲繩繩頭製作過程中的擠壓力、以及繩頭本身的抗拉強度和疲勞強度性能，然後根據測試數據來驗證新型繩頭設計理論的正確性，並不斷進行新理論的探索。
  6. Using fractal dimension defining damage variable and building macro and micro - fatigue damage evolution model of structure are suggested in this paper. the variety of damage which is not easy macro - measured to ti alloy tc11 whose material structure is high intensity can reflect fatigue damage process effectively by studying the relation between fracture and structure life

    本文研究表明：採用分維數定義損傷變量，建立結構的宏細觀疲勞損傷演化模型，尤其是對于tc11鈦合金這樣的高強度材料結構，損傷量變化不易宏觀測量，可以通過斷口分維數與結構壽命關系的研究，有效地反映疲勞損傷過程。
  7. ( 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。
  8. The main deficiency of crankshaft fatigue test machine now used in our country are inadequate test loading precision, low automatic and intellective degree and blank of mathematical statistics by computer. in order to fix them up, a new style crankshaft fatigue test system is developed

    針對目前國內曲軸彎曲疲勞試驗機試驗精度不夠、試驗的自動化和智能化程度較低以及在試驗數據計算機統計空白等不足，開發了一種具有較強實用性的新型曲軸彎曲疲勞試驗系統。
  9. And two types of fatigue equations are put forward. according to them the fatigue stress coefficient of lcb for the concrete pavement structure and the structure coefficient of tension strength of lcb for the asphalt pavement structure are developed

    並提出了貧混凝土兩種形式的疲勞方程，據此推導了混凝土路面結構貧混凝土基層的疲勞應力系數和瀝青路面結構貧混凝土基層的抗彎拉強度結構系數。
  10. 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。
  11. 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。
  12. Since 1960s, the mechanical strength reliability and structural system reliability, whose main failure modes are fatigue and service life, has achieved a great deal of development and been applied to engineering machine, aeronautical and astronautical engineering, electric apparatus, bridges, ship, civil engineering etc. with the developing of space technology and tendency of machine towards high speed, precision, automation, one realizes the importance of mechanism reliability based on the accuracy of motion, for the errors of mechanism occurred more often than that of structure, especially in the field of aeronautical and astronautical engineering and operate system of weapon

    上個世紀60年代以來，以疲勞、壽命為主要失效模式的機械強度可靠性、結構體系可靠性研究得到了很大發展，並迅速應用於工程機械、航空航天、電器設備、橋梁、船舶、土木工程等。隨著空間技術的發展以及機械的高速精密化、自動化發展，人們逐漸認識到以機構動作參數的準確可靠為主要指標的可靠性問題日益突出，因為在很多機械上機構的故障多於結構的故障，尤其是在航空航天及武器操縱系統方面。由於這些機構的運轉特性，振動可靠性的研究亦佔有突出的位置。
  13. 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。
  14. The four parameters ( spring inclination a, the frequency of excitation force w, the amplitude of excitation force f, the spring stiffness k ) are the major factors that take great influences on the vibration plate. in order to analyzing the influences of four parameters, the virtual prototype of vibration plate is built in ansys to get inherent frequency from modal analysis. thorough transient analysis in ansys, the curves of displacement n velocity and acceleration is presented

    為了分析這四個參數對系統的影響，首先在ansys中建立振動排秧盤的虛擬模型，採用有限元方法對模型進行了模態分析，得到振動排秧機構的固有頻率；同時對模型進行動力學分析，分析排秧盤的振動量、速度及加速度，並得出相應數據的曲線圖；另外，校核了主要元件彈簧的疲勞強度及使用壽命。
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