initial stress 中文意思是什麼
initial stress
解釋
初始應力-
The initial stress or deformation fields are not usually homogeneous.
初始脅強場或初始形變場通常並不是均勻的。 -
Three main error sources are the variation of intensities, the orientation errors associated with the configurations of the polariscope and the initial stress existing in the model. a quantitative method is presented to analyze and estimate the influence of different error sources on the final isoclinic results calculated by fcpst or the other pst
本文提出它們影響五步彩色相移法的定量誤差分析方法；提出控制各誤差的具體指標；給出了避免或降低這些誤差源影響的措施，為合理設計製造儀器、指導實驗和保證實驗結果的精度提供了依據。 -
Abstract : the back - analysis on displacements may provide a new method for engineers responsible for the slope engineering design to choose mechanical parameters and some components of the initial stress
文摘:位移反分析的提出，可望為邊坡工程設計工程師提供一個確定有關地層力學參數和某些地應力分量的新方法。 -
Creep analysis methods of high - rise buildings and large span buildings can only refer to creep coefficient method in bridge engineering or the method of degree of creep in hydraulic construction engineering under the present experiment conditions. in this paper, the incremental expressions of concrete creep and shrinkage strain when the initial computational age is not the same as the loading age are derived and corrected from the concept of concrete creep coefficient and the mean value theorem of integral and the principle of superposition. the differences of efficiency and accuracy of creep analysis between the finite element method with creep coefficient and the initial stress method with degree of creep are presented. this paper suggests that engineers should use the initial stress method with degree of creep to estimate the influences of creep on high - rise buildings and large span buildings on the basis of conceptual design
基於現有的試驗資料，高層及大跨度民用建築的徐變分析只能參照橋梁結構中的徐變系數方法或水工結構中的徐變度方法進行.從徐變系數的定義出發，利用積分中值定理和疊加原理，推導並修正了加載齡期與起算齡期不同時徐變收縮應變增量的表達式，對比了應用徐變系數分析徐變的有限元法和應用徐變度分析徐變的初應變法在效率和精度上的差別，並建議應從概念設計的角度出發，採用徐變度的初應變法來估算徐變對高層及大跨度民用建築的影響 -
Abstract : creep analysis methods of high - rise buildings and large span buildings can only refer to creep coefficient method in bridge engineering or the method of degree of creep in hydraulic construction engineering under the present experiment conditions. in this paper, the incremental expressions of concrete creep and shrinkage strain when the initial computational age is not the same as the loading age are derived and corrected from the concept of concrete creep coefficient and the mean value theorem of integral and the principle of superposition. the differences of efficiency and accuracy of creep analysis between the finite element method with creep coefficient and the initial stress method with degree of creep are presented. this paper suggests that engineers should use the initial stress method with degree of creep to estimate the influences of creep on high - rise buildings and large span buildings on the basis of conceptual design
文摘:基於現有的試驗資料，高層及大跨度民用建築的徐變分析只能參照橋梁結構中的徐變系數方法或水工結構中的徐變度方法進行.從徐變系數的定義出發，利用積分中值定理和疊加原理，推導並修正了加載齡期與起算齡期不同時徐變收縮應變增量的表達式，對比了應用徐變系數分析徐變的有限元法和應用徐變度分析徐變的初應變法在效率和精度上的差別，並建議應從概念設計的角度出發，採用徐變度的初應變法來估算徐變對高層及大跨度民用建築的影響 -
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。 -
Simplified initial stress analysis of composite flywheel in tension winding
纖維束張緊力纏繞復合材料飛輪的預應力簡化分析 -
The corresponding control equation is given. the control equation and boundary condition about the addiontional small deformation ' s effect caused by initial stress using virtual principal theory in cylindrical reference frame. generalized stress and strain and equivalent constitutive equation are given
第四章提出了描寫柱形薄殼中初應力的數值特徵，將應力的三維分佈轉化為二維分佈，給出相應的支配方程；在柱坐標系中，利用虛功方程建立了初應力對附加小變形影響的控制方程和邊界條件；給出了廣義應力、廣義應變及等效本構關系。 -
A new kind of theory and calculating method which is suitable to cable supported bridges was developed in this paper. cable element can include the structure ' s geometry nonlinearity and initial stress, virtual laminated element has high calculating efficiency and good precision. dimensions of lsctb was put forward based on conclusions of optimum analysis
推導了適合纜索承重橋梁的纜索單元；引入虛擬單元理論，提出適用於大跨纜索承重橋梁鋼箱梁的一種新方法?虛擬層合板單元法，該單元具有計算效率高，可以模擬復雜結構並滿足工程需要等諸多優越性。 -
Liquefaction of saturated sands is a greatly complicated phenomenon. its generation, development and dissipation are restricted by physical property, stresscondition and boundary condition of soils. in addition, there are a lot of influencing factors such as density, structure property ， clay content, degree of saturation, gradation, hydraulic conductivity, initial stress condition and dynamic load character and so on
砂土液化是一種相當復雜的現象，它的產生、發展和消散主要由土的物理性質、受力狀態和邊界條件所制約，存在許多影響因素，例如土的密度、土的結構性、粘粒含量、飽和度、級配、透水性能以及初始應力狀態和動荷載特徵等。 -
Initial ground stresses of rock slope were simulated, using boundary displacement method ( bdm ) and stress function method ( sfm ) respectively, and combining with finite element method ( fem ). the practical results indicate both methods can simulate the initial stress field with good effect
採用邊界位移法和應力函數法，並結合有限元程序對巖質高邊坡進行了初始地應力場的模擬與分析，實踐結果表明這兩種方法均能取得較好的效果。 -
As to the tunnels of jinping hydroelectric power station in sicuan province, the thesis discusses how to reasonably consider the initial stress field when designing a large - scale tunnel with high initial stress and deep buried. first, by analyzing of the rock lab tests and discusses the feature of regional geomorphology. explains the production of initial stress field, analyze the initial stress of jinping hydroelectric power station ; second, using the fem, the paper creates the real model of region. according to the results of stress measurement point, by combining of ann and fem to decide the boundary condition, the paper calculates the initial stress field ; at last, the paper analyzes the influence of the initial stress field formed from different condition on the deformation and stress of the surrounding rock, and the main factor to influence the initial stress. on the basis of the former work, the author proposes some proposals, which will be helpful for studying and designing of the similar undergroun d engineering
首先從巖體的應力?變形的特性入手，並結合工程區域的地形地貌特徵，對巖體初始地應力場的形成做出解釋，結合錦屏水電站初始地應力的現狀提出了將地應力場進行分帶；然後建立整個工程區的實體模型，在地質分析的基礎上，以工程區右半部分為代表，參照實測點的初始地應力值，採用了神經網路與有限元相結合的方法反演了該區域的初始地應力場；最後模擬隧洞的開挖，通過計算比較分析了初始地應力場對處于不同應力帶內的隧洞圍巖穩定性的影響，在此基礎上提出了作者的建議，力圖為該類工程的研究設計工作提供有益的幫助。 -
The governing equations, the corresponding variational equations and equivalent constitutive equations with the numerical expressions of initial stress were developed and applied to the analysis of the deformation of a bar. the conclusions related to the influences of initial stress on the additional deformation, especially to the natural frequency and were obtained
第四章在平截面假設下，用變分原理建立了包含初應力數值表徵在內的附加變形支配方程及相應的邊界條件、給出了廣義應力、廣義應變及等效本構方程，凸顯了初應力各數值表徵對附加變形的影響。 -
Then the initial stress was calculated with proper load and the assembly process simulation
模擬裝配夾緊過程施加載荷約束，並計算該過程中鋼板彈簧內部產生的預應力。 -
Through simulation, found the influence rule on existed structure by shield construction, discussed construction factors such as soil deformation modulus, different thickness of and different elastic modules of equivalent circle zone, control soil pressure, initial stress release rate influence on the surface settlement and structure deformation, studied the reasonable parameter value scope
通過數值模擬，研究了盾構施工對既有結構的影響規律。討論了地基變形模量、等代層厚度和參數、圍巖應力初期釋放率、盾構正面土壓力等施工因素對地表沉降和筏板基礎沉降的影響，研究了穿越結構物時參數的合理取值范圍。 -
In the paper, the results of experience and rules of distribution of the cold - formed residual stress are analyzed, the models of the cold - formed residual stress that are close to the fact are founded, initial stress files of ansys which can describe the magnitude and distribution of the residual stress are established
本文對冷彎殘余應力的實測結果和分佈規律進行了分析討論，建立了接近實際情況的槽鋼和卷邊角鋼的冷彎殘余應力模型，創建了能描述殘余應力分佈和大小的ansys初應力文件，並在ansys穩定分析中引入該文件，得到構件在殘余應力影響下的極限荷載。 -
In the dynamic equation both the viscoelasticity properties of belt, the run resistance, the inertia force of take - up, the belt ' s elastic modulus influented by the deflection of belt and the initial stress have been considered
所建立模型的動力學方程不僅考慮了輸送帶的粘彈性力學性質、運行阻力、張緊裝置的慣性力和輸送帶撓度變化下的彈性模量，同時也考慮了輸送帶初始張力的影響。 -
This mode of damage is essentially analyzed with a simple static approach by comparing post - earthquake residual strength of sand with initial stress due to gravity. the other involves limited, but often large, amount of deformation due to significant reduction in soil stiffness but without involving mechanism of failure in soil
一種為飽和砂土的強度的降低而導致的完全流動破壞；另一種為不涉及土體的破壞機理，但由於土體勁度的降低而產生有限的大變形，稱為循環活動性。 -
The method for the additional deformation of the bar with initial stress was modified, by using a second - orde r deformation theory
第八章討論了上述理論的應用范圍，提出了用二階理論改進的方法。 -
Initial stress matrix
起始應力矩陣
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