constant strain 中文意思是什麼
constant strain
解釋
恆應變-
While cyclic deformation experiment under constant strain control is performed in 400, the material shows the continuous hardening until cyclic invalidation. ( 3 ) back stress attained by kwl " s method is used to analyse the bauschinger effect during an incremental step cyclic test and cyclic deformation test under constant strain control, it is shown that back stress increases with increasing plastic strain and the numbers of cycle, and the back stress is uniform, regardless of tension or compression conditions. ( 4 ) as far as recrystallized zircaloy - 4 plate is concerned, the back stress in transverse direction is higher than that in rolling direction due to the higher schmid factor in rolling direction
對于再結晶狀態的zr一4合金板材試樣來說， t方向（橫向）試樣的背應力要高於r方向（軋制方向）的背應力，原因在於r方向的schmid因子高於t方向的schmid因子; 400下， zr一4合金的背應力要明顯低於室溫下的背應力;含氫200pg / g的zr一4合金的背應力大小與無滲氫的zr一4合金背應力相比，無明顯區別;固溶處理后， zr一4合金的背應力大小發生了變化，在較高塑性應變下，背應力均高於固溶處理前的背應力。 -
So it is very important to understand the cyclic deformation behavior of zircaloy - 4. in this paper, bauschinger effect of zircaloy - 4 with different metallurgical state at room temperature and 400 ? is investigated in an incremental step test and cyclic deformation test under constant strain control. bauschinger effect during cyclic deformation is described by using back stress, which is mainly responsible for bauschinger effect ; back stress is attained by using kwl " s method
本文採用單試樣逐級加載循環變形和恆應變幅循環變形試驗，研究了不同冶金狀態、溫度、氫以及固溶處理下的zr - 4合金的bauschinger效應現象；種種結果表明，影響bauschinger效應的主要因素是背應力；本文正是從背應力的角度來分析各種狀態下zr - 4合金的bauschinger效應現象；背應力的計算主要通過使用kwl方法而獲得。 -
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 main purpose of this paper is to study crack growth rate of a class of nonlinear viscoelastic materials under the condition of constant load and small - strain. in this paper : the new test program is raised by referencing the existing test programs and by our trial and error ; in the new test program, facilities involved in the nonlinear viscoelastic crack tests are relatively few, the test process is relatively simple and the data obtained from the experiments are credible. on this basic, the calculation of j integral of nonlinear viscoelastic double cantilever beams specimens and the parameter of fracture work of corresponding nonlinear viscoelasticity are derived
具體成果包括： 1 、證實了雙懸臂梁試件用於非線性粘彈性裂紋擴展實驗研究的優點：雙懸臂梁試件在實驗中能觀測到的擴展過程持續時間比較長，在計算j積分時，計算方法簡單； 2 、得到了改性聚丙烯材料用於非線性粘彈性裂紋擴展實驗的兩種有效的試件構形和相應的試件尺寸；採用不斷改善夾具的方法使得加載穩定； 3 、經過連續四個多月的時間得到了一組有用的實驗數據； 4 、得到了裂紋長度與時間的關系、裂紋擴展速度與時間的關系、裂紋擴展速度與裂紋長度的關系。 -
For an elastic material, hooke ' s law states. that the ratio of strain to stress is constant
對于彈性材料來說，虎克定律表明應力和應變之比是常數。 -
Method for constant amplitude strain controlled fatigue testing
等幅應變控制式疲勞度試驗方法 -
The strain of constant traveling told on his health.
這種過度勞累的頻繁旅行影響了他的健康。 -
The study demonstrated that linear visco - elastic parameters of rheological models built by theoretical modeling methods were constant while nonlinear visco - elastic parameters were not constant and changed as stress level changed and that visco - plastic parameters determined the shape of stress - strain curve
研究表明：運用模型理論建立的流變模型的線性粘彈性參數在低應力水平下是惟一的，但非線性粘彈性參數不惟一，並隨應力水平的變化而變化，而粘塑性參數的大小決定了應力應變等時曲線的形狀。 -
Time constant of strain instruments
應變儀時間常數 -
To analyse stretch bending of narrow strip by numerical calculation, taking the loading history into account, the deformed zone was divided into many elements to determine their strain by the condition that constant volume remains in deformation
摘要在考慮加載歷史的情況下，為採用數值方法研究窄板拉彎成形，將變形區劃分成若干個單元，按塑性變形體積不變條件，確定單元應變。 -
Abstract : based on the rigid visco - plastic fem technique, this paper numerically simulate the superplastic bulging process of void - sensitive materials using pressure controlling strategy of maintaining maximum effective strain rate constant and void damage evolution model of superplastic forming
文摘:基於剛粘塑性有限元技術採用最大應變速率恆定的壓力控制策略和超塑性成形空洞損傷演變模型對空洞敏感材料的超塑性脹形過程進行了數值模擬。 -
Abstract : in this paper, rigid visco - plastic fem technique is applied to numerically analyze the factors affecting the forming time of superplastic bulging, and the regularities of forming time affected by different factors are given by examples of constant pressure and constant strain rate die - bulging of cylinder parts, all of which provides guideline for process planning in actual superplastic bulging
文摘:採用剛粘塑性有限元技術對超塑性脹形成形時間的影響因素進行了數值分析，以圓筒形零件的恆壓和恆應變速率充模脹形為例，給出了不同因素對超塑性成形時間的影響規律，為超塑性脹形實際工藝設計提供了依據。 -
The strain of constant travelling told on his health.
這種過度勞累的頻繁的旅行影響了他的健康。 -
In those experiments wave shapers have been utilized to modify the incident wave so that the condition of constant strain rate is satisfied more sufficiently. the effect of outer factors on the stress equilibrium of early stage in the specimen was analyzed, and the methods to improve the uniformity of stress in specimen at early stage were given. the elastic wave velocity of specimens can be determined by the wave shape fitting of the predicted transmitted wave with the measured transmitted wave at the early stage, furthermore, the shifting - time in shpb data processing can be determined
在shpb實驗中採用波形整形技術使入射波的上升沿變寬；分析了影響shpb實驗中試件早期應力平衡的外部因素，給出了改善早期應力均勻性的方法；採用透射波的早期預估波形與實測波形作對比的方法確定了shpb實驗數據處理中的延遲時間；因而在實驗中得到了比較準確的應力應變曲線。 -
Rubber, vulcanized or thermoplastics - determination of tension fatigue - constant strain method
硫化橡膠或熱塑性塑料.張力疲勞測定.恆定應變法 -
The constant strain - rate experimentation is probed as a new experimental technique in the course of dynamic experiment. this technique got application in the experiment of wmo compression experiments and obtained the preferable raw data and experiment results
在動態試驗過程中，探索恆應變率試驗的新試驗方法，該方法在鎢鉬合金動態試驗中得到成功應用，獲得了更好的原始數據和試驗結果。 -
The constant strain of not hearing eventually forced my father ' s early retirement at age 52
最終由於失聰而形成的持續高壓迫使我的父親在52歲時提前退休。 -
By introducing the constant strain as another basic unknown quantity besides the rigid displacement at centroid of block elements, the elasticity of bock elements can be considered and the precision are improved
引入塊體的常應變作為基本未知量，從而使計算能夠考慮塊體的彈性，大大增加了計算的精度。 -
The calculated results are confirmed by experiments. either the constant strain - rate experiment or the application the elastic wave inversion method can be comprehensively applied to the dynamic experimental investigation
無論恆應變率試驗方法，還是彈性波反演理論的應用，都能夠廣泛的應用於今後動態試驗中。 -
In the end, we use the constitutive relations with damage and these without damage to analyze the uni - axial concrete compression experiment under different constant strain - rates, so it is validated by mechanical simulation. we find that when the strain - rate is low, we should use the constitutive relations with damage to predict ; when the strain - rate is high, we should use the constitutive relations without damage to predict
針對不同應變率下的單軸壓縮實驗，分別應用考慮損傷和不考慮損傷的本構關系進行力學模擬，發現應變率比較大的時候，混凝土材料可以不考慮損傷；當應變率比較小的時候，混凝土材料要考慮損傷， 。
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