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   the plate 在 船舶工业 分类中 的翻译结果: 查询用时:0.079秒
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the plate
相关语句
  钢板
    The surface of the plate is simulated by the method of Ferguson surface, and template lineconcept is defined. Utilizing parameter spline curve, space coordinate conversion, the forming both in transverse and longitudinal direction, as well as distortion of the processed hull plate are inspected, which is the foundation for carrying out parameter prediction in second processing.
    采用Ferguson曲面模拟钢板表面形状,定义了检测线的概念,应用参数样条曲线、空间坐标转换等方法,分别对加工后钢板的横向、纵向成型,以及扭曲变形情况进行检测,为进一步提出二次加工的参数预报提供了基础。
短句来源
    The temperature distribution in the plate during the LH procedure is analyzed, and the numerical analysis of the transient temperature distribution of a three dimension under the condition that the thermo-material property and the heat exchanging condition on the boundary vary with temperature is completed.
    分析了水火弯板过程的温度场,在材料的热物性和边界换热条件随温度变化的情况下,用有限元法进行了三维瞬态温度场的数值分析,得出了加工过程中任意时刻钢板内的温度分布。
短句来源
    2. This study developed an analysis model of electromagnetic-thermal coupling field, simulated the electromagnetic and heat transfer phenomena using the present model by finite element method, and obtained the law of distribution of the plate's partial temperature field.
    2.钢板电磁感应加热的电磁场和温度场数值模拟计算。 为了从理论角度分析掌握电磁感应加热的机理,需要对钢板电磁感应线状加热模型进行简化,建立相应的数值分析模型,并利用有限元方法对相应模型进行数值计算,得出钢板局部的电磁场分布和温度场的分布规律。
短句来源
    The induction heating is transforming the electricity energy to heating, and the distributing of temperature is different in different part of steel plate, and the heating stress can make the plate forming.
    感应加热是将电能转化电磁波的形式,当电磁波穿过钢板的时候,钢板内部产生涡流,导致钢板各部分热量分布不均衡,产生热弹塑性变形。 在能量损失上与传统的加热方法进行比较。
短句来源
    In this paper, a lot of research works in theoretic study, numerical simulation and experiments by electromagnetic induction heating were did, the main contents are summarized as follows:1. The temperature field model of steel plates was set up by finite element method, and obtained the distribution law of the plate's partial temperature field under different combination of parameters through analyzing the temperature field of the steel plate.
    1.建立钢板感应加热温度场的有限元数值模型,通过采用不同参数组合对钢板温度场进行数值模拟分析,得出各参数对钢板温度分布的影响规律。
短句来源
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  采用平板
    In the paper,a slippery plate in a flui d flow is chosen as an example,s imple models for gas and liquid boundary layer of microbubbles on the surface of the plate are established. And then by use of classical laminar boundary layer t heory,the friction drag in the condition of microbubbles is calculated for a ran ge of blowing velocity values and of fluid property parameters.
    以流体中光滑平板为例 ,建立微气泡层覆盖平板的气液简单边界层模型 ,采用平板层流理论 ,对给定的气泡喷射参数和流体特性参数计算了微气泡层状态下平板的摩擦阻力 ,结果显示微气泡层对平板有明显减阻效果 ;
短句来源
  “the plate”译为未确定词的双语例句
    Calculation of Coupling Vibration of Hull and Superstructure of the Plate and Beam Conbined Ship Model
    膜梁组合模型的船舶总体与上层建筑耦合振动计算方法
短句来源
    On the basis of discussing on the beam element, the thickness of the plate element t and the inertia Iy as the parameters of sensitivity analysis were discussed to analyze the structure parameter by themethod of the difference sensitivity analysis.
    本文应用差分敏感性分析的方法对结构物理参数进行分析,通过前面对梁单元的讨论,将计算模型中敏感性分析的参数缩小为仅讨论板单元的厚度t_p和梁单元的惯性矩I_y。
短句来源
    Sokolov is adapted to the plate of ratio λ(=b/a), which is greater than two.
    这种影响随型钢尺寸的增大而增加,随比值λ=a/b的增加而减小。
短句来源
    The total energy of the dynamic loads was sufficiently large to cause plastic flow of the plate material and the maximum permanent deflections from 3.78 to 20.87 times the corresponding plate thicknesses.
    实验载荷提供的能量足以引起材料的塑性流动,试板的最大残余挠度为板厚的3.78至20.87倍。
短句来源
    The plate friction reduction by microbubbles is simulated with the software, PHOENICS(V3.2), used in the fluid dynamics.
    应用流体计算软件PHOENICS(V 3.2 )对平板微气泡减阻进行了数值模拟。
短句来源
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  the plate
Controls depend only on time, and their distribution on the plate surface is fixed.
      
Nonstationarity of streamlining is taken into consideration by introducing integral terms into moments of aerodynamic forces affecting the plate.
      
The current-voltage characteristic of the plate is found.
      
New thin layer chromatography technique using a gas stream above the plate sorption layer
      
The main difficulties are associated with the nonlinear dependence of the aerodynamic characteristics on the plate thickness.
      
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A simple nonlinear wing theory for the low-aspect-ratio rectangular flat plate with large angle of attack in incompressible flow is developed. The plate is replaced by a finite number of horseshoe vortex lines which are located along the chord of the plate and which are of different strength. The free parts of the vortex lines make an angle θ with the plate. For the solution of the problem an iterative procedure is applied. The angle θ is initially assumed to be one half of the angle of attack and...

A simple nonlinear wing theory for the low-aspect-ratio rectangular flat plate with large angle of attack in incompressible flow is developed. The plate is replaced by a finite number of horseshoe vortex lines which are located along the chord of the plate and which are of different strength. The free parts of the vortex lines make an angle θ with the plate. For the solution of the problem an iterative procedure is applied. The angle θ is initially assumed to be one half of the angle of attack and the first approximate values for the strength of the vortex lines are computed. By application of the Helmholtz principle at the side edges of the plate, the second approximate value for the angle θ is determined. By repeating this calculation, the second approximate values for the strength of the vortex lines and then the aerodynamic coefficients of the plate are obtained. A few examples are calculated and the theoretical results are compared with the experimental ones. It is shown that for low-aspect-ratio rectangular plates this theory agrees very well with the experiments.

本文系对不可压缩流体中大冲角小展弦比矩形平板机翼提出—个简单的非线性理论。平板系用有限条沿弦向分布的和强度不同的马蹄形渦线来代替。这些渦线的自由部分相对于平板成θ角。问题的求解,系用迭代法。作为第一次近似,将θ角取为冲角的一半,算出渦线强度的第一次近似值。然后在平板两侧缘处运用赫尔姆霍斯(Helmholtz)的渦旋原理,算出θ角的第二次近似值,从而得到渦线强度的第二次近似值,如此继续下去直至第m次近似,最后利用渦线强度的第m次近似值求出平板的举力系数、俯仰力矩系数和诱导阻力系数。作为例子,对展弦比为0.2,0.5,1.0与冲角为5°,10°,15°,20°,25°的平板进行了计算,并与实验结果和现有其它理论进行了比较,计算结果表明,本理论较现有其它理论给出与实验更为符合的结果;同时本理论较现有其它理论更为简单。

In this paper, by using the assumptions of average deflection, average rotation and average shear deformation, the differential eqs. of the flexural vibrations of the orthotropie plates taking into account the effect of shear deformation and rotatory inertia are derived. The formula for calculating the freqijncies of rectangular plates with simply supported edges is obtained. If let the length of one edge-voo, then this formula becomes the freqency formula of Timoshenko's beam. Futhermore, the condition...

In this paper, by using the assumptions of average deflection, average rotation and average shear deformation, the differential eqs. of the flexural vibrations of the orthotropie plates taking into account the effect of shear deformation and rotatory inertia are derived. The formula for calculating the freqijncies of rectangular plates with simply supported edges is obtained. If let the length of one edge-voo, then this formula becomes the freqency formula of Timoshenko's beam. Futhermore, the condition of several concentrated masses on the plates is considered. The approximate formulas for calculating freqenciesin this condition are gained by means of the method and the Rayleigh-Ritz's method, and are applied to calculate the freqencies of the ship's double bottom in engine room. From the example, we can see that the effect of shear deformation on the freqeneies of the double bottom in engine room is very large. If we neglect the effcet of shear deformation, i.e. the classical theory of flexural vibrations of plates is used, the calculated values of the 1st freqeney of the double bottom in. engine room are larger than the experimental values about 20%. However, by using the method of present paper, taking into account the shear deformation, these errors fundamentally can be corrected.

本文用平均转角、平均挠度和平均剪切变形之假设,导出了正交异性板在虑及剪切变形和剖面转动惯量的影响下之横振动微分方程组,并求得了四周简支矩形板在计及剪切和剖面转动影响下之固有频率公式。如令平板一边的边长→∞,即得铁木辛柯(Timoshenko)梁的频率公式。进一步,我们讨论了板上具有若干集中质量的情况,用加辽尔金法和雷利-里兹(Rayleigh-Ritz)法,求得了固有频率的近似公式,并将其用于计算船舶机仓双层底(结构上之正交异性板)的振动问题。从所举实例可见,剪切变形对船舶双层底的固有频率影响很大。若不计剪切影响,即用经典的平板振动理论,则算得之机仓双层底第一固有频率比实验值大20%左右。但用本文之方法计及剪切变形的影响后,这一误差基本上可得到校正。

This paper is concerned with the iniluence of torsional rigidity of transverse beams on the postbuckling behavior of transversely framed deck plates.The Karman differential equations of the large deflection theory of thin plates are solved by using Boobnov-Galerkin method.The approximate formulas of the reducing factor φ of the deck plates concerning the restraining effect of transverse beams are then obtained.Numerical calculation is made for four sizes of angles and T profiles, which may be happened in the...

This paper is concerned with the iniluence of torsional rigidity of transverse beams on the postbuckling behavior of transversely framed deck plates.The Karman differential equations of the large deflection theory of thin plates are solved by using Boobnov-Galerkin method.The approximate formulas of the reducing factor φ of the deck plates concerning the restraining effect of transverse beams are then obtained.Numerical calculation is made for four sizes of angles and T profiles, which may be happened in the shipbuilding.The results are represented in table and graphically.From the numerical calculation, the following conclusions are drawn.Firstly, the solution of P.A.Sokolov is adapted to the plate of ratio λ(=b/a), which is greater than two.If the ratio is less than two, the beneficial effect of restrained effect of transverse beams on the stability and postbuekling behavior of the deck plates should be taken into account.This beneficial effect is increased with the increase of size of profiles of beams, and is decreased with the increase of the ratio λ.In this case, the solution of P.A.Sokolov is not adaptable.Secondly, when the ratio λ is greater than two, multiple approximations are then required.In case of square plate the first approximation is quite accurate in practice.On the basis of above conclusions a formula for estimating the reducing factor of deck plates concerning the restrained effect of transverse beams is recommended.

本文主要讨论了考虑横梁抗扭刚度对甲板板在丧失稳定性以后的工作性能的影响。文中应用布勃诺夫-迦辽金法求解了V.卡门(Karman)微分方程组。从而导得了考虑横梁抗扭刚度对板的减缩系数φ的近似计算公式,并对当前船用的横梁可能尺度和型式进行了数值计算,列成了表格和曲线。计算结果表明:对于横骨架式船舶甲板板失稳后的减缩系数在边长比大于2时采用索柯洛夫解是适宜的。但是在边长比小于2时,计及横梁的抗扭刚度对甲板板的稳定性及失稳后的工作性能起有利的影响。这种影响随型钢尺寸的增大而增加,随比值λ=a/b的增加而减小。此时索柯洛夫的解给出了过低的减缩系数值。计算结果还发现当λ大于2时,进行多次近似计算是必要的。而对于正方形板,一次近似计算是足够精确的。在这些论点的基础上,本文最后对正方形板计及横梁的弹性固定作用时在失稳后的减缩系数建议采用计算公式φ=0.53+0.47(1/n)。

 
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