塑性常數 的英文怎麼說
中文拼音 [sùxìngchángshǔ]
塑性常數
英文
plastometer constant-
For jiangpinghe double - curved arch dam, 3 - d elasto - plastic fem is made, in which the point safety factors of the dam - abutments system and the safety margin for coefficients of sliding resistance on 7 potential sliding blocks of the dam before and after the reinforcement of the dam are calculated under the conditions of the normal storage level and the design flood level respectively based on the results from the analysis made with fem
摘要對江坪河雙曲拱壩進行了三維彈塑性有限元分析，利用有限元應力成果分別計算了正常蓄水位、設計洪水位等3種工況下加固前後壩體壩肩系統的點安全系數和7個可能滑動塊體的抗滑富餘系數。Based on the regional structure dynamics analysis of the lithosphere imbricate structure in lanping - weixi area, the middle section of three - rivers area ( n26 - 28 ), the bouguer gravity anomaly of deep structures was completed and the fractal of these faults was calculated. the geology structure model and the elasticoplastic three - dimension finite - element mathematic are described, made and calculated ; and physical simulation was accomplished
針對三江中段n26 - 28蘭坪-維西地區的巖石圈正交疊加構造的區域構造動力學分析，進行了深部構造的布格重力異常延拓處理和淺部的斷層分維計算，描述、製作計算了地質結構模型、彈塑性三維有限元數學模型和物理模擬。Considering the characters of bp neural network, such as the simple structure, the advisable malleability, self - fitness, self - studying, nonlinear function approximating, the considerable abilities of parallel computing, fault - tolerant and so on, the bp algorithm have been extensively applied to the areas of system modeling, pattern recognition and seismic exploration since 1986. compared with other algorithms, as the above reasons, the bp algorithm has become the most usual and efficient solutions to the artificial neural networks
由於人工神經網路中的bp神經網路結構簡單，可塑性強，具有良好的自適應、自學習、極強的非線性逼近、大規模并行處理和容錯能力等特點，自1986年rumelhart等人提出以來，被廣泛應用於系統建模、模式識別、地震勘探等重要領域。而bp演算法數學意義明確，步驟分明，是神經網路中最為常用、最有效、最活躍的一種方法。The study in the paper starts with beam distortions, and it treats the plastic deformation area as pure bending sect, rest of the beam as rigid bodies. according to different shapes of the external tendons, it divides into three structural forms familiar in projects, that is the beams with no deviator, with a deviator and with two deviators, and studies the relation between the deformation of the external prestressing tendons and that of the beams, and derives the formulas of the ultimate stress increment of external tendons. in the formulas, the ultimate angle corresponding to half of the plastic deformation area is considered as a variable parameter
本文首先從梁極限狀態下的變形入手，將塑性鉸區看作純彎段，將塑性鉸以外的區域看作剛體，按照體外預應力筋的形狀不同，分工程中最常見的三種體外結構形式，即無轉向塊的直線型體外筋混凝土梁、具有一個轉向塊的單折線型梁和具有兩個轉向塊的雙折線型梁，研究體外預應力筋變形和梁體的變形間的關系，推導出以極限狀態下塑性鉸區之半對應的轉角為參數的計算體外預應力混凝土簡支梁以及連續梁的體外筋應力增量計算公式，並進一步求得梁的極限承載力。Abstract : on the basis of general principles of mechanics and critical state soil mechanics theory, a theoretical formula determining the coefficient of earth pressure at rest for cohesionless soil is derived by means of combining hypoplasticity with critical state soil mechanics. the formula has a simple form and is only related to the effective angle of internal friction of soil. there is a slight difference between the calculated value of the formula and that of other formulae. the further investigation of the formula shows that it can be used to determine the coefficient of earth pressure at rest of cohesionless soil
文摘:在滿足一般力學原理和臨界狀態土力學理論的基礎上，本文將亞塑性理論與臨界狀態土力學相結合，推出了一個計算無粘性土靜止土壓力系數的理論公式.該公式形式簡單，僅與土的有效內摩擦角有關，其計算結果與常見的多個經驗公式的計算結果只有微小的差別.文中討論結果表明，該公式可用於確定無粘性土的靜止土壓力系數In the current criteria, the principal parameters are given from linear elasticity analysis. the effects of cumulation in elasto - plastic working stage is hardly analysis. the stiffness calculation of current eccentric compression member is not specialy stipulated, with the result that the calculation of internal forces are crude
指出《規范》公式中的主要參數均基於線性（彈性工作階段）分析，對結構實際工作階段（包括彈塑性、塑性工作階段）由於損傷累積而引起結構性能的變化涉及較少，對常見的偏壓構件的剛度計算也未作專門規定，這使得以往內力計算較為粗糙。3. based on the interrelations of flow stress, strain rate and deformation temperature, the four constants of 7055 aluminum alloy can be calculated during the deformation process. 4
）和變形溫度t之間的相關性，求出了7055鋁合金高溫塑性變形的四個材料常數：結構因子a ，應力水平參數，應力指數n和變形激活能q值。When the element studied lost the stability during the elastic - plastic period, the stability balance equation turn to the special coefficient differential equation, and the analytic value cannot be got
當所研究構件是在彈塑性階段失穩時，穩定平衡微分方程變成非常系數微分方程，而無法求得其解析解。Associated with a project of the planned xuefengshan tunnel with 7. 6 km long during the construction of shaoyang to huaihua expressway in hunan province of shanghai to ruili national trunk highway, this paper firstly makes an introduction of the frequently - used analysis & computation methods for tunnel supporting structure. then, based on the analysis of the basic theory about the interaction mechanism of surrounding rock and support structure, a spatial computation model is made, a coupling numerical computation method with 3 - d elastic - plastic finite element and infinite element is proposed, and a comprehensive analysis has been made to the effects of the overall stability and safety of the surrounding rocks of different characteristics, different classes and under different construction methods. and thus the problem of 3 - d infinite region to which applying the general finite ca n ' t do has been resolved
6公里的雪峰山隧道工程，首先介紹了隧道支護結構的常用分析計算方法；然後通過對隧道施工過程中，洞室穩定性與支護結構相互作用機理的深入分析，建立了隧道施工過程的空間計算模型，提出了採用三維彈塑性有限元-無限元耦合的數值計算方法，綜合分析了隧道在不同圍巖特性和圍巖類別條件下，以及不同施工開挖方案等對隧道圍巖整體穩定和安全性的影響，從而解決了通用有限元方法難以解決的隧道三維無限域問題；其可充分發揮有限元法在分析非線性方面的有效性和成熟性，以及無限元法在分析處理無限域和半無限域方面的精確性和簡便性，為隧道施工過程中圍巖的穩定性分析開辟了一條新的途徑。Usually yield function is introduced to describe the plastic deformation, however, a new damage function is proposed here to describe the additional deformation due to the damage of soil structure
塑性變形常用屈服函數描述，損傷變形則可以引入一種類似的損傷函數加以描述。Based on thermodynamics laws, inner - variable theory and analysis of conventional tn - axial tests data and breakage characteristics of loess, this paper proposed that the loess would produce elastic, plastic and nonreversible damage deformation during loading
從熱力學定律和內變量理論出發，在對常規三軸試驗數據和土樣的破壞特性分析的基礎上，認為土體在受力過程中將產生彈性變形、塑性變形和不可逆損傷變形。It overcomes the limitation in the assumption in other semi - supervised learning algorithms that probabilistic distribution of data is known, and has the strong ability of learning new patterns and correcting errors because of stability and plasticity of the adaptive resonance theory
在該系統中取消了一般半監督學習演算法中假定已知數據概率分佈的條件限制，利用自適應諧振理論的穩定性和可塑性，使其具有非常強的學習新模式和糾正錯誤能力。To discuss the rheological effects of soft soil, shear strength is divided for rheological analysis. viscosity coefficient of remolding soil is used to modify partial parameters of routine soil mechanic tests. so the shear strength caused by rheological effects can be considered
在前人研究的基礎上，本文採用對土體抗剪強度分類的方法研究了軟土的流變性，提出了重塑土粘滯系數的計算方法，重點分析了常規試驗中部分參數由於流變而引起的試驗誤差。On the basis, three elastic calculation coefficients of the two - way composite slab on three common boundary conditions are deduced and calculated by applying the classic elastic plane theory. in the thesis, the elastic design methods of pk prestressed composite two - way slab is explored and studied by the example. furthermore, it is also studied how to apply the yield - line design method to design the prestressed two - way composite floor slabs
本文以此為依據，應用經典彎曲薄板理論，採用李維法推導和計算了這種雙向樓板三種常見邊界下的撓度和內彎矩彈性計算系數，並在此基礎上通過算例探討了pk預應力雙向疊合樓板的彈性設計方法，同時還對其塑性鉸線設計方法進行了研究。7. by comparing numerical analysis methods, a common analytical programme has been worked out with elastic - plastic model and finite elements method to analyzing reinforced earth retaining structure under the dynamic loads of train
7 、通過對常用的數值計算方法進行分析對比；運用加筋土彈塑性本構模型和有限元計算方法，編制出了鐵路加筋土擋上結構在動荷載作用下的通用數值計算程序。Recommendations for the presentation of plastics design data - electrical properties - permittivity
塑料設計數據表示方法推薦標準.第2部分:電氣特性.第1節:介電常數A suitable calculation method is given to identify the fore material constants using trialxial tests. in comparison with the hypoplastic constitutive model presented by w. wu and d. kolymbas, this model has the advantage of form simplicity. the determination method of material constants presented in this dissertation avoids disadvantage that material constants vary with the chosen reference point
該模型與wwu .和dkolymbas提出的亞塑性本構模型相比，具有形式簡單的優點，所提供的材料常數確定方法，克服了亞塑性模型中因選取參考點的不同所確定的材料常數值變化大的弊病。分享友人