time-dependent stress 中文意思是什麼

time-dependent stress 解釋
時效應力分析
  • time : n 1 時，時間，時日，歲月。2 時候，時刻；期間；時節，季節；〈常pl 〉時期，年代，時代； 〈the time ...
  • dependent : adj. 1. 依靠的，依賴的。2. 從屬的，隸屬的，【語法】從屬的。3. 由…決定的。4. 下垂的，懸吊的。n. 1. 受贍養者，靠人生活的人。2. 扈從，侍從。3. 依存[從屬]物。
  • stress : n 1 壓力，壓迫，緊迫，緊張。2 【語音】重音；重讀；【詩】揚音；語勢，著重點。3 重要（性），重點，...
  1. An anisotropic time - dependent trinal - yield - surface model for the stress - strain - time behavior of soft clay

    軟土各向異性三屈服面流變模型
  2. Abstract : thermally induced stress and the relevant warpage cause by inappropriate mold design and processing conditions are problems that confounded the overall success of injection molding. a thermorheologically simple thermoviscoelastic two - dimension material model is used to simulate the residual stress and warpage within injection molded parts generated during the cooling stage of the injection molding cycle. the initial temperature field corresponds to the end of the filling stage. the fully time - dependent algorithm is based on the calculation of the elastic response at every time step. numerical results are discussed with respect to temperature and pressure

    文摘:不均勻的熱殘余應力及其變形是注塑成型加工中常見的工程問題之一.應用熱流變簡單材料的二維熱粘彈本構方程得到的遞推公式，數值模擬了成型中的熱殘余應力及其翹曲變形，並用數值實驗討論了溫度、壓力對注塑件殘余應力及變形的影響，發現溫度變化不均勻是注塑件翹曲變形的最主要原因，其影響遠大於壓力的作用，與工程實驗的結論一致
  3. Based on the available rule of variation in undrained shear strength during excavation, and the basic idea of the merchant model, this paper presents a constitutive relationship for saturated cohesive soils, capable of taking into account both stress path and time - dependent effect. it ' s named by the author as modified merchant model

    本文根據前人基坑開挖前後土的不排水抗剪強度變化規律的研究結果，並結合merchant模型的思想，提出了能同時考慮開挖應力路徑和應力應變隨時間變化的飽和粘土應力應變關系，亦可稱之為修正merchant模型。
  4. Moreover, the time - dependent stress in ribs due to the creep also has been measured for about one year since the static experiment case was over

    在完成靜力加載工況后，對模型進行了一年的持荷觀測，實測鋼管混凝土徐變對結構應力重分佈的影響。
  5. Considering the characteristics of internal force and structures of simply supported pc bridges, a novel automatically step - up method ( asum ), taking into account the influence of steel arrangement, steel ratio, stress losses of tendons and time - dependent concrete modulus, to analyze creep and shrinkage effects is presented. this method accepts all kinds of expressions of creep and shrinkage, and it is easy to calculate total stress, strain of concrete and steel and deflection of bridge at any time, the expected prediction accuracy will be obtained by further dividing the time - step within duration

    首先，針對預應力混凝土簡支梁橋的受力特徵和構造特點，提出了徐變效應分析的全量形式自動遞進法，可考慮截面上鋼筋位置、配筋率、預應力鋼筋鬆弛、混凝土彈性模量隨時間變化等影響，且計算式可適用於任何形式的收縮、徐變特性表達式；建立的公式可方便地求解任意時刻混凝土、鋼筋的應力與應變和跨中梁體的豎向變形，計算精度可方便地通過計算時段的細分來控制，直至給出滿意的結果。
  6. Based on an algorithm for solving the time - dependent coefficients nonlinear differential equations numerically, computer software is developed which has an easy - to - use interface. the dynamic response to elastic deformation and stress in key parts and forces acting on the bearings under various parameters and working conditions can be calculated

    在研究求解該時變系數非線性微分方程組數值解法的基礎上，開發了具有良好人機界面的模擬軟體，可以計算出多種參數和工況條件下關鍵點的彈性位移、應力和運動副反力的變化規律。
  7. It is found that the microstructure and properties of as - deposited dlc films is seriously dependent on the substrate temperature used in deposition processes. with the increase of substrate temperature, sp 3c content in the deposited dlc film decreases, surface roughness and friction coefficient of deposited dlc films increase. at the same time, microhardness, residual stress and optical band gap became lower

    研究發現，基片溫度對dlc薄膜的結構和性能影響最明顯，隨著薄膜沉積過程中基片溫度的增加， dlc薄膜中的sp ~ 3c含量減少， dlc薄膜的表面粗糙度增加， dlc薄膜的顯微硬度降低， dlc薄膜的摩擦系數增大， dlc薄膜的殘余應力都是減小的，光學帶隙eg變窄。
  8. The research indicate that the structured soft clay has below several characteristic, the viscous strain is produced during the stage of primary consolidation and of second consolidation, and in the prophase, the relation of stress - strain - strain rate is unique, so the form of constitutive model, such as, f ( v ', e ) = 0, f ( ' v, e, t ) = 0, ca n ' t describe strain behavior of soil skeleton rationally ; the time - dependent properties involve three aspects, in addition the time - dependent strain, apparent preconsolidation pressures that depend on strain rate, and the effect of creep compression on apparent preconsolidation pressures ; because of holding structural strength, the mechanics characteristic is determined by the magnitude of stress, and the compression curve is composed of several sections. by combining structural yield stress and it ' s characteristics with the improved time line model, a new one - dimensional elastic visco - plastic consolidation model is established

    研究結果表明，結構性土的固結過程具有以下特性：主固結和次固結階段都包含有因土骨架的粘滯性移動而產生的變形，而且在正常固結階段，存在應力?應變?應變速率的唯一性， f （ _ v ， e ） = 0 、 f （ _ v ， e ， t ） = 0形式的本構關系不足以描述土骨架的變形行為；固結壓縮過程中的時間效應包括三個方面的內容，除了應力應變關系與時間相關外，還包括粘滯性變形引起表觀前期固結壓力增加和屈服應力的應變速率效應；軟土的結構性使其力學特性與應力水平相關，壓縮曲線具有分段性。
  9. After having deduced the combined stiffness matrix considering the contribution of concrete, tendons and non - prestressed steel, a novel mixed analysis method ( mam ) based on finite element ( fe ) and asum to analyze time - dependent stress redistribution and structural internal force redistribution due to creep and shrinkage in pc bridges is presented. the obvious advantage of this method is that all time - dependent factors, which are took into account in asum, need not to be considered in fe, thus the accuracy of mam can be easily guaranteed by fe and asum, respectively. this method opens a new approach to analyze creep and shrinkage both conveniently and precisely

    該法的特點是，有限元法列式中不考慮與時間效應有關的影響因素，僅完成彈性分析功能，所有與時間效應有關的影響因素均在全量形式自動遞進法中考慮；因此，混合分析法的計算精度可通過各自獨立的兩方面來保證：有限元法彈性效應分析的精度和全量形式自動遞進法時變效應分析的精度，為方便、準確的徐變效應分析提供了新途徑。
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