cyclic stress-strain 中文意思是什麼
cyclic stress-strain
解釋
周期應力-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。 -
According to the complication of cyclic loading the aeolotropism and bauschinger effect resulted form plastic deformation were reflected by the kinematic hardening model, the transient stress - strain relation was described by jhansale model in the iterative formulas
在迭代格式中，針對復雜的交變載荷，採用運動強化模型，反映了塑性變形引起的各向異性和包辛格效應，運用jhansale模型描述材料的瞬態應力應變關系。 -
The first stage is primary slip then followed by secondary slip ; the last stage is due to dislocation passing the slips. the cyclic stress strain ( css ) curve exhibits a stronger hardening occurred in cyclic plastic deformation than that in tensile test
建立了拉伸和應變疲勞的有限元模型，使用基於晶體滑移模型的數值方法，對晶體內部滑移系的啟動以及滑移繫上的分解切應變、切應力這些無法試驗觀測的變量進行計算，分析它們對晶體塑性變形的不同影響。 -
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。 -
Sm scales the nonlinear variation of tangential modulus during monotonic loadings into a piecewise linear distribution, which can easily be modified to simulate specific characteristics of soil material behavior during cyclic loadings. sm can simulate dynamic stress - strain response of arbitrary cyclic loadings
該模型將單調加載情況下呈非線性變化的切線模量量化成一種呈分段線性分佈的幾何結構，並通過對這種結構加以變換，來描述循環加載情況下材料的特性。 -
Saturated sand are testes in the laboratory under the undrained cyclic loading condition with static - dynamic dual purpose triaxial compression test apparatus, which is designed under the cooperation of hohai university and marui co. ltd japan. the results indicate that the stress path approaches from a initial stress point to the failure lines as cyclic loading goes on, and eventually converges on a certain limiting stress path in the vicinity of the failure lines. the stress - strain curve, however, does not converge on a closed hystersis loop ; the shear strain rapidly increases in looser sand or gradually and continually increases in denser sand
利用河海大學與日本圓井株式會社共同研製的新型的多功能靜動三軸儀進行了飽和砂土循環扭剪不排水試驗，研究表明，對于松砂，剪應變幅度快速地由微小增加到百分之幾甚至百分之十幾，對于緊砂，剪應變幅度逐漸地由微小增加到百分之幾甚至百分之十幾；經試驗初步研究表明用初始有效平均正應力歸一化的有效應力路徑很好的一致性。 -
The approximate polynomial method was based on neuber ' s method, the cyclic stress - strain responses and neuber ' s rule were treated as probabilistic curves, and the statistic characteristic was obtained from the approximate polynomial. the method is fast and easy for engineering application
近似的多項式擬合法在諾伯法的基礎上，將循環應力應變曲線和諾伯雙曲線視為概率曲線，通過建立近似多項式的方法，求得局部應力應變的統計特性，快速簡便，適合工程應用。 -
The alloys, which were cold - worked followed by recrystallization annealing, display cyclic softening in the range of low strain because the cyclic stress - strain curve lies below the monotonic stress - strain curve, and show cyclic hardening in the range of high strain because the cyclic stress - strain curve lies above the monotonic stress - strain curve
在低應變范圍，冷加工后經再結晶退火處理的錯合金的循環應力一應變曲線位於單調拉伸曲線的下方，表現為循環軟化;在高應變范圍則位於單調拉伸曲線的上方，表現為循環硬化。 -
The mechanism of reinforcing steel bar under the press or pull is researched and the characteristics under the pull - press cyclic loading is studied in composite foundation. it shows that the stress concentrating on the reinforcing steel bar and the increasing stress can be seen with the increasing of cyclic times. residual strain always exists after unloading without considering the size of pullout force and increases slowly with the cyclic times
探討了復合地基中抗拔鋼筋的受壓受拉機理及在拉壓循環荷載作用下的性狀，研究發現，隨拉壓循環次數的增加，應力向鋼筋集中，鋼筋承受的壓力隨著增大；無論上拔力大小，卸載后都有殘余變形，並隨著拉拔循環次數的增加而緩緩增加；抗拔碎石樁破壞性狀明顯，可明確的得到抗拔碎石樁的破壞荷載。 -
In addition, 4 pieces of prestressed small - sized concrete hollow block masonry models and 1 piece of normal concrete hollow block masonry model are tested under frequency low - cyclic static load. some seismic behaviors such as strain - stress curve and ductility of the prestressed masonry were analyzed
進行了4片預應力砌塊砌體墻和1片對比用普通墻的低周反復荷載試驗，分析了預應力砌體的滯回曲線、延性等抗震性能。 -
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。 -
The random responses of local multiaxial stress and strain were accurately calculated by the taylor expansion elastoplastic stochastic finite element method under cyclic loading
交變載荷下taylor展開彈塑性隨機有限元可精確計算局部多軸應力應變的隨機響應。
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