direct stress 中文意思是什麼

direct stress 解釋
法向應力
  • direct : adj 1 筆直的，一直線的；正面的。2 直接的。3 直截了當的，直率的，明白的。4 直系的，正統的。5 【語...
  • 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. It is obvious that the loading of fig. 19(a)produces both direct tension and bending stress on the cross section.

    顯然，圖19（a）的加載在截面上產生了正的拉應力彎曲應力。
  2. A simple normal or direct stress produces a certain elongation or contraction of the material.

    單純的正應力使材料產生一定的伸長或縮短。
  3. By hydraulic modeling, this paper describes studies on the stability of a floating bulkhead operating in standing water and flowing water, and it ' s hydrodynamic stability characteristics that distinguish in standing water from in flowing water ; and direct measurements of the forces acting on the model floating body during floating and sinking is taken. as a result, the rotation stress curves are produced and analyzed ; to provide data for optimum operation schedule analyses of the sluice, the relationship of the impact forces acting on the side wall of the gate and the running speed is studied ; the reasons of unstably uplifting of the bulkhead are discussed and the method to solve the problem is also given in this paper

    本文結合常州新閘防洪控制工程水工模型試驗，系統分析了浮箱門在靜水和動水中的穩定性及其影響因素，指出靜水穩性和動水穩性的不同特點；試驗測定了浮箱門動水運行時的受力情況，給出並分析了定位過程轉動力的變化過程曲線；根據浮箱門啟閉速度與門體和岸墻之間撞擊力大小的關系，選擇合理的動力設備，為設計和工程實踐提供可靠依據；分析浮箱門難以穩定上浮的原因，並給出解決方案。
  4. Then, use the direct integral calculus method of newmark to solve solution, and get each node and element ' s displacement and stress solution vs. time

    然後，用newmark直接積分法進行求解，得到各節點和單元的位移、應力的時程解。
  5. The welding technology of francis turbine runners is optimized from the view of subsection welding and local heating by numerical simulation. the result shows that welding residual tensile stress appears in the weld and its area nearby, and peak stress appears in the dangerous area of blades after practising quondam welding technology ; welding residual tensile peak stress in the dangerous area of blades can be decreased by welding both ends earlier and then welding middle section later during subsection welding, and decreasing effect on welding residual stress of the subsection welding is related to the weld length of blade outlets and welding direction of each subsection ; decreasing effect on residual stress of the local heating is direct proportional to heating time, heating temperature, heating area, and inversely proportional to cooling area, and welding residual tensile peak stress in the dangerous area is decreasing trend earlier, and then increasing trend later with heated location increased

    本文利用數值模擬手段對轉輪的焊接工藝從分段焊和局部加熱兩個方面進行了優化，結果表明:採用普通工藝焊接時，葉片焊后殘余拉應力出現在焊縫及其附近區域，並且在葉片出水邊的熔合線附近（危險區域）出現了峰值;在採用優化的分段焊時，先焊兩端后焊中間的方法可以降低葉片危險區域的焊接殘余拉應力峰值，降低效果與葉片出水邊焊段長度、焊縫各段的焊接方向有關;局部加熱法降低轉輪危險區域殘余應力的效果主要與加熱時間、加熱溫度以及加熱面積成正比，與冷卻面積成反比，並且危險區域的殘余應力隨加熱區域的增大呈先降低后升高的趨勢。
  6. Tga. insulating and sheathing materials of electric and optical cables - common test methods - part 4 - 1 : methods specific to polyethylene and polypropylene compounds - resistance to environmental stress cracking - measurement of the melt flow index - carbon black and or mineral filler content measurement in polyethylene by direct combustion - measurement of carbon black content by termogravimetric analysis - assessment of carbon black dispersion in polyethylene using a microscope

    電纜和光纜的絕緣和護套材料.通用試驗方法.第4 - 1部分:聚乙烯和聚丙烯化合物專用方法.抗環境應力致裂.熔化流動指數測量.通過直接燃燒測量聚乙烯中炭黑和或礦物填料含量.通過熱重分析法
  7. Insulating and sheathing materials of electric and optical cables - common test methods - part 4 - 1 : methods specific to polyethylene and polypropylene compounds - resistance to environmental stress cracking - measurement of the melt flow index - carbon black and or mineral filler content measurement in polyethylene by direct combustion - measurement of carbon black content by thermogravimetric analysis - assessment of carbon black dispersion in polyethylene using a microscope

    電纜絕緣護套材料的通用試驗方法.第4部分:聚乙烯和聚丙烯專用方法.第1節:耐環境應力破裂性.在空氣中熱老化后的卷繞試驗.熔體流動指數測量.聚乙烯中炭黑和
  8. Pe. insulating and sheathing materials of electric and optical cables - common test methods - methods specific to polypropylene and polypropylene compounds - resistance to environmental stress cracking - measurement of the melt flow index - carbon black and or mineral filter content measurement in pe by direct combustion - measurement of carbon black content by tga - assessment of carbon black dispersion in polyethylene using a microscope

    電纜和光纜的絕緣和護套材料.通用試驗方法.聚丙烯和聚丙烯化合物專用方法.抗環境應力致裂.熔化流動指數測量.直接燃燒法測量聚乙烯
  9. Through direct pullout test, we examine the effect of the water to cement ratio, contend of steel fiber and silica fume on the bond behavior ; compare the bond behavior of two types of cfrp bars with difference surface treatment ( r1 bars and g1 bars ), and reprocess the one of inferior bond strength ; investigate the bond stress distribution along the bond length of cfrp bars, and assess the adequacy of some exist analytical models of bond - slip behavior to reproduce the experimental bond behavior

    本文主要通過直接拉拔試驗，考察水膠比、鋼纖維摻量、硅灰摻量以及cfrp筋的表面處理類型等材料參數對粘結性能的影響，並對粘結效果較差的cfrp筋研究了表面處理方法，以提高cfrp筋與rpc的粘結性能;通過在cfrp筋表面粘貼應變片，測定了粘結應力沿cfrp筋埋長的分佈情況，並對現有的粘結滑移本構模型與試驗結果的擬合效果進行了比較。
  10. At last, for direct realization of this kind of structure system, an experiment of cable truss structure with d5 and 16 trusses has been done to check its distribution of self - equilibrium stress

    最後，為了對本結構體系有更直觀的感性認識，向時也為了進一步驗證理論分析的正確性，本文對一直徑5米、由16榻索析架組成的環形索析結構模型進行了實驗研究。
  11. In this paper, the influence of cycles of drying and wetting on strength and deformation are studied by means of routine direct shear apparatus, triaxial apparatus and light consolidation apparatus which include : the influence of force of constraint on strength, the total stress strength of expansive soils with different saturation degree, the influence of cycles of drying and wetting on the total stress strength, the relation between saturation degree and compression modulus and that between saturation degree and void ratio, the influence of cycles of drying and wetting on the effective stress strength, the relation between saturation degree and generalized suction

    本文利用常規直剪儀、三軸儀以及輕便固結儀，分別對非飽和膨脹土的強度和變形特性以及干濕循環對強度和變形的影響進行了一系列的試驗研究。以飽和度、干濕循環次數為變量，分別探求了外力約束對膨脹土強度的影響，不同飽和度膨脹土的總應力強度特性，干濕循環對非飽和膨脹土總應力強度的影響，飽和度與壓縮模量以及孔隙比的關系，干濕循環對飽和膨脹土有效應力強度指標的影響，廣義吸力與飽和度的關系，建議了一組計算非飽和膨脹土變形及強度特性的經驗公式。
  12. Many computational analysis of soil constitutive models appear to be irrational because of taking no account of or not thoughtfully considering the anisotropic deformation when they face the direct or indirect simulation of principal stress and principal strain relationship of load bearing unit

    諸多土體本構模型都會直接或間接面臨對受荷單元主應力主應變關系的模擬，但由於不考慮或考慮各向異性變形特性不周，對各向異性變形問題的計算分析就會出現不合理。
  13. Ctod is not a direct and close parameter for stress - strain field, so it is still difficult to define and measure ctod, but because it can be used to solve the engineering problems effectively, it is widely used in the field of engineering

    Ctod不是一個直接而嚴密的應力、應變場參量，其確切定義和直接測量還存在困難，但由ctod法得到的一些經驗公式能有效地解決工程實際問題，因而得到工程界的廣泛應用。
  14. The precision of its calculating results has an direct effect on the design, construction and safe usage. in the typical calculation of the settlement of foundation, additional stress incurring by loading is calculated according to elastic theory which has the same characteristics in semi - indefinated space, the condesion of soil is decided by the condesion experiment of one - demension and the settlement is calculated by adding results of respective layer

    地基沉降計算一直是困擾巖土工程技術人員的一個難題，其準確與否將直接影響建築物的設計、施工和安全使用。在經典的地基沉降計算方法中，荷載作用下地基中附加應力場是根據半無限空間各向同性彈性體理論計算的，土體壓縮性是根據一維壓縮試驗確定的，並採用分層總和法來計算地基的沉降量。
  15. Macroscale inversion analysis of measured displacements in tunnel, slope and dam is studied detailedly according to inverse formulation method and direct formulation method. aimed at inverse problem for identifying original geostress parameters and stru - ture modulus of rock, linear hypothesis for shear stress field of slope is proposed. structural model of transversely isotropic medium is constructed

    針對逆源（初始地應力）和逆介質（巖層結構模量）的識別問題，提出了地層剪應力場的線性假定，構造了橫觀各向同性體的結構性計算模型，應用了逆定式化有限元反演方法，快速地搜索到了被識別參數的最優值。
  16. Standard practice for preparation and use of direct tension stress - corrosion test specimens

    直接拉伸應力腐蝕試樣的制備和使用
  17. Test method for dielectric breakdown voltage and dielectric strength of electrical insulating materials under direct - voltage stress

    直流電壓應力下電氣絕緣材料的介電擊穿電壓和介電強度的試驗方法
  18. The vulnerability there depends not only on the potential direct damage such as damages of engineering structures and infrastructures, losses of property and the death or injury of victims, but also on the potential indirect damage such as interruption of business, reduction of output, induced fires and emotional stress on victim families

    城市的易損性不僅由可能產生的工程結構和生命線系統破壞、財產損失和人員傷亡等直接損失確定，還要考慮潛在的商業活動中斷、停（減）產、次生火災和受災者的情緒壓力等間接損失。
  19. Therefore, it is necessary to stress and classify the boosting effect on china ' s trade competitiveness of intra - industry trade created by different kinds of direct investment

    因此，由不同類型的直接投資所產生的產業內貿易對我國外貿競爭力的提升作用須予以重視和區分。
  20. Methods of fatigue testing - direct stress fatigue tests

    疲勞試驗方法.第3部分:直接應力疲勞試驗
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