stress limitation 中文意思是什麼

stress limitation 解釋
應力限
  • 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，...
  • limitation : n. 1. 限制。2. 界限；極限；限度；局限性；限制因素。3. 【法律】（訴訟）時效，有效期限。
  1. Perfect pre - processing and post - processing function is one of the main factors to evaluate the vitality and market value of the finite element analysis system surveying today development of finite element analysis technology, most of which concentrate on establishing fine user interface, also has some limitation on application, and especially, the research on the visualization of arbitrary cut - plane is always in ascendants to realize the visual processing on cut - plane needs reprocessing the results of finite element analysis which have get, so the algorithm is two parts : seeking the physical value of cut - plane and drawing 2d contours, the former, based on the theory of stress on " arbitrary inclined plane " in physical mechanics, use the method of linear interpolation method to get the coordination and physical value of intersection between cut - plane and element arris ; the latter, based on the tables on elements, nodes, stress and strain, summarize a rapid algorithm of generating 2d contours based on the grid. this thesis synthesizes there two parts and get a visual processing program under fortran

    縱觀有限元分析技術的發展，目前大多集中在建立良好的用戶界面上的研究仍存在許多應用上的局限性，其中對任意剖面上可視化的研究仍處于方興未艾的階段。要實現任意剖面上可視化處理，必須先將得到的有限元計算結果進行再處理，因此在演算法上分為兩部分：求任意剖面上物理量值的演算法及二維等值線演算法。前一部分以彈性力學中「任意斜截面的應力」為理論基礎，利用線性插值方法得到截面與單元棱邊的交點坐標及交點物理量值；在此基礎上；根據已得到的單元及節點序號表、應力應變物理量表，總結出一種基於有限元剖分網格的快速生成二維等值線的演算法。
  2. During the previous analysis of asphalt pavement structure with cracks, the stress intensity factors were usually calculated approximatively using plane strain model for some limitation. however, the assumptive load of this model is not coincident to the practical load

    在以往分析含裂縫的瀝青路面結構時，由於條件的限制，通常是假設瀝青路面結構近似為一平面應變模型，但是這種模型所假設的荷載與實際作用的荷載有較大的區別。
  3. The paper is based on innumerable practical heavy - load road data, deliberate heavy - load standard in detail through theoretical arithmetic, and bring heavy - load standard about cement concrete pavement and asphalt concrete pavement separately ; in the meantime, through a large quantity of cement concrete pavement stress calculation, the paper puts forward relation expression between load on concrete board and stress level under board ; meanwhile, the paper puts forward traffic classification about cement concrete pavement and asphalt concrete pavement ; through bearing board testing on each structure sheaf the paper finds the material modulus gets modified ; through comparing position equivalent rebound modulus to theoretical equivalent rebound modulus, the paper points out limitation of nomograph in course of cement concrete pavement design, whereby, puts forward modifier formulas about theoretical equivalent modulus

    本文以大量的重載道路資料為主，從實際出發，結合理論計算，對重載標準進行了詳細的討論，分別給出了水泥混凝土路面與瀝青混凝土路面的重載標準了；同時，通過大量的水泥混凝土板底應力計算，推導出了混凝土面板荷載與板底應力水平的關系式；給出了水泥混凝土路面與瀝青混凝土路面的交通分級；通過對試驗路各結構層進行承載板測試，發現現有材料模量較以前有了明顯的提高；對比現場實測的當量回彈模量與理論當量回彈模量，指出現有水泥路面設計中的諾謨圖不能完全符合現有道路材料，從而提出了對理論模量的修正公式。
  4. Abstract : incompatible element nh11 and hybrid stress element 18 were employed to analyze rock burst occurring in coal face 9108 of sanhejian coal mine. compared with the results from ansys, the two optimized fems can execute more accurate numerical simulation in the research of rock burst as well as other rock problems and lessen the errors from inaedquately meshing in huge calculations due to the limitation of labor and computer time. in addition, the criterion of averaged generalized stress rate was proposed and used to determine the site and moment of rock burst. the given conclusion is in accordance with the face of coal face 9108 very well

    文摘:利用優化非協調元和雜交元分析了三河尖礦沖擊礦壓，並與ansys程序的計算結果進行了比較.認為優化有限元在沖擊礦壓乃至巖石材料的數值模擬中能給出更為精確的結果，也可減小大型計算中由於人力、機時所限粗分網格產生的誤差.分析中，採用了廣義平均應力率準則來判斷沖擊點位置和沖擊時刻，所得結論與實際情況吻合
  5. Based on the experimental results, in concrete limitation stress sandwich first stage ' s ability and one - way and two - way precast slabs sandwich, results content code require - second class crack control. resistant crack calculation is appropriate. because post - tensioned prestressed advances plane ' s resistant crack. deformation and section strain measure accord with calculation results, this indicates 3d - gridding beams modulus is reasonable to precast slabs sandwich

    本文通過對試驗數據的分析總結，認為：單塊夾層板第一受力階段的性能試驗及單向和雙向裝配整體式夾層板的性能試驗，滿足《混凝土結構規范》 （ gb50010 - 2002 ）中關于預應力樓板的二級裂縫控制等級的要求，抗裂設計得當；由於板縫無粘結預應力筋的存在提高了板的抗裂性。
  6. Secondly, in view of the limitation and shortage of traditional simulation of finite element approaches for bolt, a new composite grouted bolt element including nonlinear contacting relation will be built based on the above study of the mechanics mechanism of fully grouted bolt. then, an elastic - plastic finite element program will be developed for the analyses of tunnel stability, in which the composite grouted bolt element and nonlinear finite element analysis method will be used ; the patterns and the affect of main design parameters on the support effect of bolt will be analysed using the program, and conclusions of guidance importance for tunnel support design will be drawn. finally, simulation compution for the excavation and support of a highway tunnel will be made out using the above production, and the method of application of the program will be discussed ; analysis of the deformation, stress and distribution of plastic range will be done, and rational support plan will be worked out, which is of guidance importance for tunnel support design and the thery and technique of fully grouted bolt used in tunneling will be perfected further

    首先，本文在綜合分析隧道穩定性影響因素及失穩破壞模式的基礎上，對全長粘結式砂漿錨桿作用力學機理進行了深入研究，為全長粘結式砂漿錨桿的有限元模擬分析奠定了基礎;其次，針對傳統錨桿有限元模擬方法的局限性與不足，在上述全長粘結式砂漿錨桿作用力學機理研究基礎上，建立出能反映界面非線性粘結的新型復合砂漿錨桿有限單元模型;然後，運用上述復合砂漿錨桿單元模型，引進非線性有限元分析手段，開發了隧道支護穩定性分析的有限元程序，並就全長粘結式砂漿錨桿的型式與設計參數對支護效果的影響進行了深入探討，得到了對隧道支護設計具有指導意義的結論;最後，運用本文研究成果對某公路隧道工程實例進行了開挖與支護的模擬計算，探討了其應用方法，並就隧道變形與應力及塑性區分佈規律進行了分析，從而提出了合理的支護方案，為隧道支護設計提供了參考依據，完善了隧道全長粘結式砂漿錨桿支護的理論與方法。
  7. However, the arisen time of overcompensation was different under different stresses, and it appeared at initial - middle stage under the stresses of nutrients limitation and light limitation, while at middle - later stage under the stress of salinity for the cause of the lag effect of osmosis regulation. in addition, the overcompensation in microalgae was probably one internal cause of algae bloom

    另外，營養限制脅迫和光限制脅迫下產生的超補償作用主要是表現在培養過程的初中期，而對于鹽脅迫下產生的超補償作用，由於滲透調節過程的「滯後效應」 ，因而其在培養過程的中後期表現得更明顯。
  8. In the article there is also an analysis about the influence to the complete status of the prestressed concrete cable stayed bridge of such factors as the stiffness change of the girder and the deflection of cables and the concrete creep and the temperature change. this must be useful to engineer to take a reasonable stress limitation in determining the reasonable completed status

    本文還採取對比分析計算的方法，對主梁剛度變化、拉索垂度、混凝土徐變及溫度變化等因素的影響進行了分析，並指出了它們的影響程度，有助於工程師們在確定成橋狀態時合理地選取控制條件。
  9. This paper uses the method of tensor to proof the tenable condition of generalized plastic potential, discuss the mathematical essential of the associated and disassociated flow rule and the relation of the yield surface and plastic potential surface, reason the expression of plastic factor strictly. debate the limitation on drucker ' s postulate. subsequently, this paper gives the mathematical basis of constitutive theory involving the rotation of principal stress axes. so it is proved that the mathematical and mechanical foundation of the generalized plastic mechanic

    本文運用張量的方法論證了廣義塑性位勢理論成立的充要條件，討論了關聯與非關聯流到法則的數學實質，屈服面與塑性勢面的關系，嚴密推導了塑性因子的表達式，討論了drucker公設的局限性，並給出了考慮主應力軸旋轉時土體本構模型理論的數學依據，系統的論證了廣義塑性力學成立的數學力學基礎。
  10. The authors provides a new method named limitation coefficient of tension stress method, which can calculate the quantity of prestressed tendons, taking the prestressing secondary moment into account

    本文提出了計算預應力筋數量的「拉應力限制系數法」這一概念，並由之推導了考慮預應力次彎矩的計算公式。
  11. Compact in size, no limitation by space, allow local massage of your body, relaxing stress

    體積小，不受空間限制，可作身體局部按摩，有效舒解壓力
  12. As we all know, photoelastic stress analysis is an advance method of structure stress analysis. but the limitation of some factors, such as the experimental material, is one of major challenges in the studying of photoplasticity

    眾所周知，光彈性應力分析已是比較成熟的結構應力分析方法，但由於實驗材料等因素的限制，使光塑性的研究陷入了困境。
  13. The large strain constitute equations are derived according to nonlinear continuum mechanics, the rate of jaumann stress and the theory of boit consolidation on account of the limitation of small strain theory in hydraulic fill, soft ground and large displacement projects

    考慮小變形分析法在吹填土、軟土地基和大位移問題上的局限性，從非線性連續介質力學出發，採用jaumann應力率和boit平面固結理論，推導了大變形本構方程。
  14. Discussion on the limitation of stress - wave reflection method in testing foundation pile

    反射波法在水泥攪拌樁檢測中應用探討
  15. Speed sensor has the limitation of high cost, taking up more space, low reliability and high dependency of working condition. speed - - sensorless frequency modulation system avoids those defects and can meet the need of high performance of ac motor driving which is a stress field

    無速度傳感器變頻調速系統既避免了速度傳感器帶來的成本增加、體積增大、可靠性降低、易受工作環境影響等缺陷，又能夠滿足高性能交流傳動的需要，是運動控制發展的一個重要方向。
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