stress amplitude 中文意思是什麼
stress amplitude
解釋
應力變幅-
It can be noticed that both r and t specimens show initial hardening and subsequent softening at the strain amplitude higher than 0. 8 % and cyclic softening from the beginning to fracture under strain amplitude less than 0. 8 % at room temperature, and the cyclic flow stress was always lower in r specimen than in t specimen at the same strain range
且在相同的應變幅下， t向試樣比r向試樣具有更高的循環流變應力。此外，對r向及t向試樣，低應變幅下呈現出循環軟化現象是因為晶粒旋轉導致循環軟化；而在高應變幅下發生循環硬化是由於孿晶作用的結果。 -
The experimental results is shown as followings : ( 1 ) the cyclic flow stress - strain curves in an incremental step test could be expressed as the power law relation : ( 2 ) when the strain amplitude is lower during cyclic deformation tests under constant strain control, softening firstly appears, then gradually hardens with the increasing numbers of cycle ; when the strain amplitude is higher, hardening firstly appears, then gradually softens
試驗結果表明： （ 1 ）循環流變應力與應變的相互關系曲線均符合冪律關系式： （ 2 ）在室溫下進行恆應變幅循環變形過程中，當所控制的應變幅較小時，該材料首先出現循環軟化，之後隨循環周次的增加直至循環失效前該材料出現了硬化現象。當應變幅較大時，該材料開始出現硬化，然後隨循環周次的增加才出現軟化。 -
The results show that the influences of duration and amplitude of stress wave on spallation process of rock under stress wave loading are important ; and stress wave with different waveforms is characteristic of different stress values and different stress loading ratios during the same period of time, which brings about the comprehensive effect when difform stress wave is loaded to medium
通過對不同應力波延續時間、不同應力波峰值和不同應力波波形下應力波誘發層裂過程的數值分析，對應力波反射誘發層裂的規律和機制進行探討。 -
The relations between the dummy stress amplitude and fatigue life can be easily developed. and then, the bhw - 35 steel fatigue design curve can be obtained according with asme criterion and bs5500 criterion. compared ~ vith the design curves provided by the asme and bs5500 criterion, the curve got in this paper provides reliable direction for the fatigue design of boiler drum, which used on the altering generating power plant set
將焊縫材料的虛擬應力幅與壽命關系，按照asme和bs5500規范的方法分析得到bhw ? 35鋼疲勞設計曲線，並與asme和bs5500規范中的設計曲線進行比較，為我國調峰機組410t / h鍋爐汽包疲勞設計提供可靠的實際依據。 -
Through analyzing bed ' s response to wave, in the condition that super - stratum is more hard and second - stratum is more soft in region of interest, super static interstitial hydraulic pressure amplitude die away rapidly between stratums, before in sight of boundary between hard and soft stratum, plane effective pressure increase to max. shear stress reach peak value when bed thickness is approximately 2. 7 meters, then it will decrease to the minimum on the place where the flexible soil has a common boundary with the rigidity, so the boundary is the most destroy plane on engineering. on the basis of reconnaissance in situ, in normal situation of sea, the structure slides to the basin along the boundary
通過對底床在波浪下的響應分析，對于研究區底床上層較硬而第二層較軟的情況，超靜孔隙水壓力幅值在層間交界處迅速衰減，在臨近硬、軟地層交界處前，水平有效應力增至最大，剪切應力在底床厚度大約2 . 7米左右達到峰值，然後減小，到硬、軟層土交界位置，達到最小，因此這個界面就是最容易發生破壞的工程軟弱面，現場勘查證明，即使在正常海況下，構築物也會沿坡以此交界面為滑動面，緩慢向「盆」底滑動。 -
In this paper, the linear accumulative damage theory commonly used for calculation of the fatigue of variable amplitude stress is used to assess the fatigue of the same part of the structure due to the two kinds of stress cycling and the assessment formulae for the fatigue of the stud welding roots in the negative moment region are also provided
引入通常用於計算變幅應力疲勞的線性累積損傷理論，對2種應力循環引起的結構同一部位的疲勞進行評定，給出組合梁負彎矩區栓訂焊趾疲勞評定公式。 -
Finally, theoretical results and the fatigue test data of equal amplitude are combined, which is introduced the conception of " range of hotspot stress ", and the method of fatigue design for grid structure with bolt - sphere joints is obtained in this paper
最後，將本文的理論研究成果與常幅疲勞試驗數據相結合，並引入「熱點應力幅」的概念，建立了螺栓球節點網架結構的疲勞驗算方法。 -
Stress concentration measure on the model of boiler drum with two nozzles was executed and the testing results were compared with the asme criterion, experiential value and the value of finite element method respectively. this measurement result provides direction for evaluation of stress amplitude
設計模擬汽包進行應力測試，並與美國asme規范和經驗公式計算值、有限元計算結果進行比較，為后續的低周疲勞壽命估算時交變應力幅值的確定提供依據。 -
The paper studied controlling rotor vibration with the super - elasticity of sma and sfd, set up the new equation of sys tern vibration according to the stress - strain curve of sma in super - elasticity state, used the nonlinear theory and the dynamic stability theory to study the vibration of rotor controlled by sma, discussed the stability condition of the system, obtained the relationship of system parameters when bifurcation was appeared, supposed a method that improves the stability of rotor system and restrains vibration amplitude though changing parameters, and finally validated the effect of restraining vibration of the improved system through emulation
摘要研究利用形狀記憶合金的超彈性和擠壓油膜阻尼器控制轉子振動，利用形狀記憶合金在超彈性狀態下的應力應變曲線，建立了新的系統振動方程，運用非線性理論和運動穩定性理論研究轉子在形狀記憶合金控制下的振動狀態，討論了系統的穩定性條件，獲得系統發生分岔時系統參數之間的關系；並提出了通過改變參數來提高系統穩定性和抑制振幅的方法，最後通過模擬驗證了改進后的系統振動抑制效果。 -
Abstract : according to the deep analysis of the typical punching process, the loading charts and the amplitude - frequency curves of straight side cnc turret press frame are obtained. in the end the dynamic response of a typical process is calculated using modal superposition method by fem software marc and the static and dynamic stress of some nodes is compared as well
文摘:根據板料沖裁時的工作負荷圖確定了數控回轉頭壓力機的動載荷譜，並通過傅立葉展開，獲得了壓力機的幅頻譜，最後通過marc軟體採用模態疊加法計算了典型沖裁時機身的動態響應，分析了其動態特性，並對特徵點的動靜態應力進行了比較。 -
With the increasing of montmorillonite content, the composites showed a trend of pseudo - solidlike at lower frequencies, the montmorillonite layers could align along the stress direction, and as a result, the dependence of dynamic modules on the frequency was quite different before and after suffering from large amplitude oscillatory shear
然而當蒙脫土含量低於和臉或蒙脫土片層在基體中呈完全團聚狀態，則復合材料表現出與聚合物基體類似的線性粘彈特性。實驗發現，在熔體經大振幅振蕩剪切后，上述「類固. -
From the point of kinematics and dynamics, the author analyses the propagation rules of stress waves in concrete, namely time - space relations, wave amplitude attenuation, dispersion effect and characteristics of transmission of reflected waves and acoustic waves. combining with engineering practices, the author also concluded the main points of low strain detection of integrity of longdiameter underwater cast - in - situ piles, and pointed out that comprehensive and relational utilization of reflected waves method and acoustic wave transmission method can accurately evaluated the integrity of pile shaft and then improve the reliability of detection. 6figs., 3refs
從運動學和動力學角度，分析應力波在混凝土中的傳播規律：時空關系、波幅衰減、頻散作用以及反射波與聲波透射的特點，結合工程實踐，總結大直徑水下灌注樁低應變檢測的工作要點，指出綜合、合理運用反射波法與聲波透射法，可以較準確地評價樁身完整性，提高檢測結果的可靠性.圖6 ，參3 -
The ttm is established to observe the effect of the volume change history, creep, amplitude of the exterior restraints on restraining stress development
等效模量法難以考察體積變形歷史、徐變、外約束等因素對墻體約束應力發展的影響。 -
The results indicated that the fatigue life would be extended with first loading at a high stress amplitude and then a low stress amplitude during the fatigue process
發現先進行高應力加載后換用低應力加載將會顯著延長合金的疲勞壽命。 -
And then it uses stress amplitude method to check fatigue strength and estimates fatigue life of the main girders
在此基礎上，應用應力幅法對主梁進行了疲勞強度的計算和疲勞壽命的估算。 -
Virtual stress amplitude - based lo
基於虛擬應力幅的低周疲勞可靠性分析 -
Virtual stress amplitude - based low cycle fatigue reliability analysis
基於虛擬應力幅的低周疲勞可靠性分析 -
The cycled strain of the alloy is mainly related to the stress amplitude of cyclic loading
合金的循環應變值主要與合金的循環加載應力幅值有關。 -
Calculation of stress amplitude and stress amplitude spectrum coefficient for steel structure of tower crane
塔式起重機鋼結構應力幅及應力幅譜系數的計算 -
The calculated results agree with experimental results in terms of stress amplitude impacted by machine stiffness
就機械剛度對應力幅度的影響而言，計算結果與實驗結果一致。
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