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maximum principal stress中文是什么意思

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用"maximum principal stress"造句"maximum principal stress"怎么读"maximum principal stress" in a sentence

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  • 最大主应力

例句与用法

  • Maximum principal stress theory
    最大枝力理论
  • In the middle of tunnel , maximum principal stress at horizontal is bigger than that at vertical , the magnitude is 17 ~ 23mpa , which formed the high stress site
    隧道中部大埋深地段，最大水平主应力一般都大于垂直主应力。量级在17 23mpa左右，属于高应力地段。
  • ( 6 ) the principal stress direction arised deflexion obviously after excavation , the maximum principal stress paralled to opening , minimum principal stress vertical to sidewall or vault
    ( 6 )数值模拟研究表明，隧道开挖后，主应力方向发生明显偏转，最大主应力与开挖临空面平行，最小主应力近于垂直。
  • Taking protective measures can obviously reduce the face slab ' s surface temperature drop - out range and the maximum principal stress amplification caused by temperature sudden drop , and the stronger protective measures are , the more obvious reduced effect is
    采取保护措施，可以明显削减气温骤降所产生的面板降温幅度及最大主应力增幅，保护措施越强其削减效果越明显。
  • Research shows that four factors have great influence on the formation of complex rock mass . first , rock mass subjected six times of tectonic movement during long period of geo - history , each tectonic movement produced fractures and associated joints corresponding to the orientation of maximum principal stress and deteriorated the properties of fractures formed at former period ( s ) . second , down - cutting of langcangjiang river produced unloading fractures
    采用了四种岩体质量分级评价方案对研究区岩体质量进行了研究，这四种方案包括：工程岩体分级标准( gb50218 - 94 ) 、水利水电围岩工程地质分类( gb50267 ? 99 ) 、岩体rmr分类( bieniawski , 1973 ) 、岩体质量指数z分级(小湾, 1995 ) 。
  • The surface of natural fracture ( crack ) is parallel to the orientation of maximum principal stress . the principle orientation of anisotropic permeability reservoirs agrees with the orientation of the maximum principle stress . many engineering problems ( e . g . bore - hole stability , casing deformation failure during drilling , reasonable arrangement of wells , the optimum design of hydraulic fracture and so on ) are influenced by the in - situ stress orientation
    天然裂缝面和裂隙面与最大主应力方向平行；在各向异性低渗透率油田中主渗透率方向与最大水平主应力方向趋向一致：在钻井过程中井壁稳定性，套管变形和损坏，油田开发井网合理布置、水力压裂优化设计等都与地应力方向有关。
  • Obtain these chief research achievements . ( 1 ) the method of hydraulic fracturing , kaiser effect experiment and the finite element numerical simulation computation results , the direction of maximum horizontal principal stress intersect the small - angle of tunnel axial line , it is favorable to the stability of tunnel peripheral rock ; according to the test rust of field stress - relief method , at the present time , zhe gu mount tunnel have n ' t access to high crustal stress site , maximum principal stress magnitude is 17mpa ~ 20mpa
    主要获得以下研究成果： ( 1 )综合水压致裂法、室内岩石kaiser效应试验和有限元数值模拟计算研究成果，最大水平主应力方向与隧道洞轴线小角度相交，对隧道围岩稳定性有利；根据现场应力解除法测试结果，目前鹧鸪山隧道尚未进入高地应力段，最大主应力量级为17mpa 20mpa 。
  • Presents the investigation of the heat conduction behavior , internal thermal stress field of specimen under thermal shock and microscopic damage and failure of the tungsten based composites by combination of macroscopic and microscopic analyses and integration of material science and mechanics ; describes a microscopic mechanical model based on the microstructure of components with macroscopic stress applied to the microscopic model as that of maximum principal stress at the center , and the fringe of the specimen , and the microscopic stress fields obtained through calculation by the finite element method , and concludes from test results that the maximum principal stress is first generated inside the test coupon , , and a failure will be first initiated in the inclusion if the material fails at this time ; the maximum principal stress moves to the edge of the test coupon after the test coupon is heated for a period of time , and the failure will first be initiated in the base if the material fails at this time
    从材料设计的思想出发，采用宏观与微观、材料科学与力学相结合的方法，对钨基复合材料的热传导行为、材料在热冲击载荷下的内部热应力场及材料细观结构的破坏行为进行了详细的理论研究.根据钨基复合材料的细观组织结构建立了材料细观模型.在宏观分析的基础上，分析了材料微结构内部的破坏行为.分别取试件心部与边缘主应力值最大点的应力状态，施加在所建立的模型上，用有限元方法计算了模型内部的弹性应力场.结果表明：试件主应力最大值首先产生在试件内部，此时，如果材料发生破坏将先从夹杂中开始；加热一段时间后试件中的最大主应力值转移到试件边缘，此时材料发生破坏将先从基体中开始
  • Based on our own simulation results and results of some numerical simulation of single fold structure by other investigators in recent years , the factors that affect single fold shapes and the variation of maximum principal stress and horizontal strain during the deformation of single fold are discussed in this paper
    本文结合近年来单层褶皱构造数值模拟研究进展，以及笔者近几年来对单层褶皱所进行的数值模拟实验研究，主要论述了单层褶皱变形的影响因素，单层褶皱变形过程中的最大主应力与水平应变的变化及其影响因素等。
  • The result indicates that under the condition of temperature sudden drop , the temperature of face slab ' s surface and centre will fall consecutively along with the temperature sudden drop , and the face slab ' s surface temperature drop - cut range will reach maximum ; under this condition , the tensile stress appears in the face slab ' s surface and centre , the maximum principal stress in the face slab ' s surface is larger titan that in the face slab ' s center ; the maximum principal stress in the face slab ' s surface and centre both occurs in the position that the elevation equals approximately to half of the dam ' s height
    结果表明，在气温骤降条件下，面板表面及中心的温度将随气温骤降的发生而持续降低，其中面板表面温度降幅最大；此时面板表面和中心均出现拉应力，面板表面的最大主应力大于面板中心的最大主应力；面板表面和中心的最大主应力均发生在高程约为坝高一半的位置。
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