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计算刚度
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  calculating stiffness
     Furthermore,the theory of Oh concrete non-linear fatigue cumulative damage is compared with the result of experiment obtained by 3 means of calculating stiffness damage,and the proposal of predicating fatigue life of reinforced concrete member is mentioned according to the experiment.
     将Oh混凝土非线性疲劳累积损伤理论与本文运用三种方法计算刚度损伤的试验结果做了比较和分析,并结合试验提出了预测钢筋混凝土构件疲劳寿命的建议。
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     This paper deduces the basic formula of stiffness coefficient for linear-elastic petloid spring on the basis of Castigliano theorem and matrix transform method. The expressions of flexibility and stiffness matrix wand diagrams of calculating stiffness coefficients are presented.
     本文应用能量原理和座标变换方法对花瓣状弹簧的线弹性刚度特性进行了详细的分析,建立了柔度和刚度矩阵表达式以及计算刚度系数的图表。
短句来源
     When gas thickness varies in 1~3 μm, the load-carrying capacity is stable ,maximal variation is about 10%, and the error between calculating stiffness and experimental stiffness is less than 12%. So, this slide can be used for mobile components or bearing components of precise appliances.
     最后通过实验证明了该导轨气膜厚度在1~3μm时,刚度稳定,最大变化量约为10%,且计算刚度与试验刚度的误差小于12%,能够适用于高精密器械的移动元件或承载元件。
短句来源
     Based on the fatigue experiment of 2 RC slabs,the results of the theory of Oh concrete non-linear fatigue cumulative damage [7] is compared with those of the experiment obtained by 3 means of calculating stiffness damage,and the proposal of predicating fatigue life of reinforced concrete member is mentioned according to the experiment.
     结合2块钢筋混凝土板的疲劳试验,将Oh混凝土非线性疲劳累积损伤理论[7]的计算结果与运用三种方法计算刚度损伤的试验结果作了比较和分析,并结合试验提出了预测钢筋混凝土构件疲劳寿命的建议。
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  “计算刚度”译为未确定词的双语例句
     As the reverse matrix of the flexibility matrix it is not in ill condition.
     文中给出了直接计算刚度矩阵的公式,作为柔度矩阵的逆阵,它是非病态的。
短句来源
     The errors for the calculated stiffness in the theoretical formulae can be directly obtained from the errors for the independant variables, and theoretical formulae should be used for more accurate calculcation or selection of bearings.
     特别指出 :“基于线弹性理论的理论公式中的载荷等自变量的变化适用范围比经验公式要宽的多 .理论公式中的计算刚度误差可由各自变量误差直接求得 ,较精确计算时或选用轴承时应以理论公式为准 .
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     The Research on the Calculate Rigidity of Frame Beam and Amplitude Regulation Coefficient in Reason Value of Bending Moment within Beam End
     框架梁计算刚度与梁端弯矩调幅系数合理取值的研究
短句来源
     4) Using the concept of time-dependent-calculation rigidity, a Finite Element Method considering time factor is set up for calculation of rod series statically indeterminate structures and corresponding program is developed.
     4.利用时变计算刚度概念,建立考虑时间因素的超静定混凝土结构有限元计算方法,并编制相应的计算程序;
短句来源
     The result shows that the practical stiffness of prestressed beam is always less than the calculated stiffness in the standard.
     测试的结果表明预应力梁的实际刚度总是小于规范中的计算刚度
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更多       
  相似匹配句对
     Calculation of Meshing Stiffness of Helical Gear
     斜齿轮啮合刚度计算
短句来源
     Calculation of Stiffness in Crown Area of Radial Tyres
     子午线轮胎胎冠刚度计算
短句来源
     We also give a new correction factor to simplify the calculation of the Unstatistic.
     的计算
短句来源
     Calculation of Skewed Plates
     斜板的计算
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  calculating stiffness
After an introduction to the fundamentals of EAM it is outlined how it can be used for calculating stiffness constants and HGCs.
      
Some Methods for Calculating Stiffness Properties of Periodic Structures
      
In order to avoid numerical instabilities, a small positive value equal to 0.001Ec0 is employed for calculating stiffness matrix coefficients.
      


Linear form functions are commonly used in a long time for a toroidal volume element swept by a triangle revolved about the symmetrical axis for general axisymmetrical stress problems. It is difficult to obtain the rigidity matrix by exact integration, and as approximations close to the symmetrical axis, the accuracy of this approximation deteriorates very rapidly. The exact integrations have been suggested by some authors for the calculation of rigidity matrix. However, it is shown in this paper that these...

Linear form functions are commonly used in a long time for a toroidal volume element swept by a triangle revolved about the symmetrical axis for general axisymmetrical stress problems. It is difficult to obtain the rigidity matrix by exact integration, and as approximations close to the symmetrical axis, the accuracy of this approximation deteriorates very rapidly. The exact integrations have been suggested by some authors for the calculation of rigidity matrix. However, it is shown in this paper that these exact integrations can only be used for those axisymmetric elastic bodies with central hole. For solid axisymmetric body, it can be proved that the calculation fails due to the divergent property of rigidity matrix integration. In this paper, a new form function is suggested. In this new form function,the radial displacement u vanishes as radial coordinates r approach to zero. The calculated rigidity matrix is convergent everywhere, including these triangular toroidal element closed to the symmetrical axis. This kind of elenent is useful for the calculation of axisymmetric elastic body problem.

轴对称弹性力学问题的有限元分析长期以来都是采用三角圆环有限元和线性形状函数。由于积分困难,常用近似积分求得刚度矩阵,这种近似积分对于靠近旋转对称轴的元素,误差很大,所以,长期以来,被认为不满意的办法。也有用精确积分计算刚度矩阵的.但本文指出,这种积分只适用于有中孔的轴对称体。对于实心的轴对称体而言,这种刚度矩阵都不收敛,计算是无效的.本文提出了一种新的形状函数,当径向座标r接近于零时,这种形状函数的径向位移u自然地接近于零。如果用这种新的形状函数,则由此计算求得的刚度矩阵,不论三角圆环有限元的位置是否靠近轴线.都是存在的。这种有限元,就能用于计算实心的轴对称体的问题。

Recently, significant development has been made in the solution of problems regarding elasto-plastic earthquake response of multi-storeyed structures byusing directly seismic records as input and step-by-step intergration method.In the course of event, important theories and methods of design have beencreated in the field of earthquake-resistant structures. Some published papers dealing with non-linear earthquakeresponse were devoted to plane structures. For structures having unsymmetricalmass distribution or...

Recently, significant development has been made in the solution of problems regarding elasto-plastic earthquake response of multi-storeyed structures byusing directly seismic records as input and step-by-step intergration method.In the course of event, important theories and methods of design have beencreated in the field of earthquake-resistant structures. Some published papers dealing with non-linear earthquakeresponse were devoted to plane structures. For structures having unsymmetricalmass distribution or stiffness allocation,the above-mentioned problemsstill remain unsolved.Starting from a multi-storeyed shear-torsional type model, taking two-di-mensional horizontal earthquake wave as input and adopting degrading tri-linear mode of restoring force characteristics curve, an approach is developedin this paper for analysis of earthquake response of multi-storeyed structureswith torsion and a corresponding computer program GANU has been workedout. It is shown that the method is applicable to multi-storeyed structures involving frames,infilled frames or wall systems or certain mixed types of thesethree. A numerical example of a three-storeyed factory building is given. Resultsare compared with those obtained without taking torsional effect into account,indicating the detrimental influences of torsion caused by obviously unsym-metrical mass or stiffness of structure which are not to be ignored in design.

近年来,采用直接输入地震波,以逐步积分法计算多层建筑的弹塑性地震反应,获得了很大的进展。解决了一些重大工程的抗震设计验算及震害分析问题,进一步发展了建筑物抗震设计的理论。有些国家在抗震设计规范中,对这一方法的使用还做了明确的规定。 以往发表的多层建筑弹塑性地震反应计算方法,多只着眼于单榀平面结构,对于刚度或质量分配不对称的多层结构考虑空间扭转振动的问题,须研究新的计算方法。 本文从多层剪扭型结构出发,以二维水平地震波为输入,采用较常见而符合实际的退化二折线及退化三折线恢复力特性曲线,提出了多层结构扭转的弹塑性地震反应计算方法,并编制了相应的计算程序GANU。 本文成果可用以计算刚度及质量不对称多层结构的弹塑性地震反应,当有必要考虑地震波运动的扭转效应时,本法也可适用。

Formulas of Wilson-θ method are simplified in this paper,so that the consumption of time in computation is reduced and the accuracy of computation is increased.Based on analysis and practice of computaton,the flexibility matrix of cantilevers is proved to be in ill condition,and direct formulas for calculating stiffness matrix are given.As the reverse matrix of the flexibility matrix it is not in ill condition.

本文对 Wilson-θ法的计算公式作了简化,从而可节省计算时间和提高计算精度。通过分析和计算实践,证明了伸臂梁柔度矩阵为一病态矩阵。文中给出了直接计算刚度矩阵的公式,作为柔度矩阵的逆阵,它是非病态的。

 
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