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box
相关语句
  箱形
    An Analysis and Discussion on the Influence of the Superstructure Rigidity upon the Integral Moment of Box Foundation
    上部结构刚度对箱形基础整体弯矩影响的探讨
短句来源
    The Calculation of Torsion for Box Girder Bridge by the Finite Difference Method
    箱形梁桥扭转计算的差分解法
短句来源
    ANALYSIS OF SHEAR LAG EFFECT IN BOX GIRDER BRIDGES
    箱形梁桥剪滞效应分析
短句来源
    Some Problems in the Strength and Stability Test of Thin—wall Box—shaped Pit Tower
    簿壁箱形井塔强度与稳定性试验研究中的若干问题
短句来源
    Calculation of Multistory Frame and Box Foundation as a Whole system by Semi-analytical and Semi-residual Method
    高层框架与箱形基础的整体计算——半解析半残数法
短句来源
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  箱体
    The Structural Optimization Design of The Complex Structure Box
    复杂箱体的结构优化设计
短句来源
    Jacking construction method of on-site prefabricated reinforced concrete box structure
    现场预制钢筋混凝土箱体结构顶进法施工
短句来源
    Tt/T1 descends with the rising of box height, while the increasing amount of Tt/T1 will be relatively large with the weakening of structure torsion rigidity (torsion irregular structure).
    随箱体高度增大,Tt/T1呈下降的趋势,随结构抗扭刚度的减弱(扭转不规则结构),Tt/T1的增长量较大。
短句来源
    Through the test on WFB assembly hollow slab with cast-in-site ribs by static water, its working performances and mechanical characters were studied and analyzed, including stiffness, deformation, the appearance and development of crack, the combination of the prefabricated WFB hollow box and the concrete.
    通过WFB装配式现浇密肋空心楼盖的静水加载,对WFB装配式现浇密肋楼盖在竖向荷载作用下的受力性能进行了试验研究,研究内容主要包括:在竖向荷载作用下,WFB装配式现浇密肋空心楼盖的受力性能,还有空心楼盖的刚度和变形,裂缝出现、发展状况以及预制的WFB空心箱体和现浇密肋混凝土的结合程度等。
短句来源
    Through the analysis of 9m×9m, 10m×10m, 11 m×11 m rib floor and WFB assembly hollow floor with cast-in-suit ribs respectively, the author concluded the magnified coefficient of the WFB hollow box to the WFB assembly hollow floor.
    本文通过对9m×9m、10m×10m、11m×11m的密肋楼盖和空心楼盖实体建模计算,分析了WFB空心箱体对楼盖刚度的贡献系数。
短句来源
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  “box”译为未确定词的双语例句
    Service Behavior of Steel-Concrete Composite Box Beams and Triaxial Nonlinear Analysis
    钢—混凝土组合箱梁受力性能及空间非线性分析
短句来源
    DYNAMIC RESPONSE ANALYSIS OF BURIED BOX STRUCTURES
    土中箱形结构动力反应分析
短句来源
    Loading of the Buried Box Structures
    土中箱形结构的荷载
短句来源
    Comprehensive optimum design of box section telescopic boom in crane
    起重机箱形伸缩臂综合优化设计的研究
短句来源
    Analysis and Calculation of Box Frames on Elastic Foundation
    弹性地基上箱形框架计算分析
短句来源
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  box
Affine Frames of Multivariate Box Splines and their Affine Duals
      
We investigate the fractal interpolation functions generated by such a system and get its differentiability, its box dimension, its packing dimension, and a lower bound of its Hausdorff dimension.
      
At last, we discuss the series expressions of these functions and give a Box-counting dimension estimation of "critical" fractal interpolation functions by using our smoothness results.
      
The Box dimension, Packing dimension and Hausdorff dimension of such surfaces are investigated.
      
There was a highly conserved MADS-box motif in the protein of PtAP3, so it was putatived to be a transcription factor.
      
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In the previous investigations of "liquefaction" of saturated sands, experiments were sually conducted by shaking the saturated sand samples in the box-typed or cylindrical containers of varinus sizes. Evidently, under those test conditions, the states of stresses were only limited to the laterally-confined cases which would not be representative for all the actual conditions in soil foundations and earth dams. Based on the suggestion made by Professor Huang Wen-xi. a series of tests have been carried...

In the previous investigations of "liquefaction" of saturated sands, experiments were sually conducted by shaking the saturated sand samples in the box-typed or cylindrical containers of varinus sizes. Evidently, under those test conditions, the states of stresses were only limited to the laterally-confined cases which would not be representative for all the actual conditions in soil foundations and earth dams. Based on the suggestion made by Professor Huang Wen-xi. a series of tests have been carried out in a specially designed triaxial testing apparatus fixed on a shaking table. After analysing the test data, it is proven that the effect of the state of stress upon he pore water pressure produced in the saturated sands due to vibration should be composed of two components, namely, the effect of "hydro-static pressure" and the effect of shear stress. Therefore it is necessary to consider not only the effect of the magnitudes of the principal stresses σ_1 and σ_3, but also that of the ratio between them, that is σ_1/σ_3. The main trend is that, while the other conditions are held constant, the ratio of the pore water pressure △μ created by vibration to the minor principal stress σ_3 decreases with she increase of the magnitude of σ_3 as well as the increase of the stress ratio σ_1/σ_3 There also exist certain limiting values for σ_3 and σ_1/σ_3 at which △μapproaches zero. The experimental results also demonstrate that the stability of the skeleton structure of the sand against vibratory action are apparently dependent upon the orientation and arrangement of the sand particles and the previous process of sample treatment. It is recognized that it is not possible to judge and evaluate quantitatively the above relation simply by the density of the sand. However, this factor should be taken into account in evaluation of stabilities of earth slopes or foundations of saturated sands.

本文通过对三轴振动试验成果的分析,证明饱和砂土由于振动而产生的孔隙水压力所受到应力条件的影响应包括“静水压力”和剪应力两个部分。因此,不但需要考虑主应力值σ_1和而且还需要考虑主应力比σ_1/σ_3的影响。试验还指出,砂土颗粒骨架结构的抗振稳定性还显著地与砂土颗粒排列状态和它们形成的历史过程有关。这个关系不能够简单地用砂土密度来衡量。

In this paper, the basic principles and main features of a universal computer programme using finite element method of subspace iteration to calculate structural elements of a machine tool are introduced. During the calculation, the structural elements are regarded as a box-type structure made up of thin flat plates. For checking the computed accuracy obtained from this programme, the resonance frequencies and modes of a cantilever beam divided into meshes with different fineness are calculated and compared...

In this paper, the basic principles and main features of a universal computer programme using finite element method of subspace iteration to calculate structural elements of a machine tool are introduced. During the calculation, the structural elements are regarded as a box-type structure made up of thin flat plates. For checking the computed accuracy obtained from this programme, the resonance frequencies and modes of a cantilever beam divided into meshes with different fineness are calculated and compared with the accurate solution obtained from analytical approach. The computed results about the resonance frequencies, modes and forced vibration regardless of damping in a cross-beam of numerical control planomilling machine are also introduced.

本文介绍了用子空间迭代的有限元法计算机床大件(也称结构件)振动的基本原理和所编制的通用计算程序的主要特点。计算时将机床大件按空间平板组合结构来处理。为了检验所用程序的计算精度,对不同粗细网格的悬臂梁进行了自振频率和振型的计算,并和用解析法计算所得的精确解作了对比。本文并介绍了对数控龙门铣床的横梁进行自振频率、振型和不计阻尼时的强迫振动计算的结果。

In this paper, the hybrid plane stress rectangular Element and hybrid bending rectangular element defined by the linear stress are selected. By combining them, we can obtain the hybrid shell elemeut hmsl, and then use it for the analysis of cylindrical shell having perpendicular edge and three-di- mensional panel structures. The basic principle of the method, the formula's derivation of the node force having prestrain in the neutral plane of the shell, the discussion of the effect of the hole in the element...

In this paper, the hybrid plane stress rectangular Element and hybrid bending rectangular element defined by the linear stress are selected. By combining them, we can obtain the hybrid shell elemeut hmsl, and then use it for the analysis of cylindrical shell having perpendicular edge and three-di- mensional panel structures. The basic principle of the method, the formula's derivation of the node force having prestrain in the neutral plane of the shell, the discussion of the effect of the hole in the element and the main features of a universal computer programme are introduced. This paper presents the results of calculation of a box column model with different meshes and are compared with those obtained from the method using the plane stress triangle elements and the theoretical analysis. It shows that the present method has high accuracy and good convergence with a few eleme- nts. Finally, the numerical results of deflection and wall stress of a five storey large panel building model subjected to the seismic force are presented. It shows a good agreement with the experimental data.

本文选择线性应力函数的交感应力模型平面应力矩形单元与薄扳弯曲矩形单元,将它们的刚度矩阵迭加形成交感模型薄壳单元Hmsl,并将之应用于具有正交边界的柱面薄壳和平板空间组合结构的分析。文中介绍了该分析方法的基本原理,推导了壳体中面内有初始应变时的相当结点力公式,讨论了壳单元开孔的计算方法并扼要介绍了计算机程序的功能。文中通过对空心盒式梁在不同网格下的计算,同采用等应变三角元[2]的结果以及解析解[1]作了对比。文中提供了用此方法计算某五层大模板房屋模型在地震作用下的变位和墙体应力的数值结果。它与实测数据[3]能很好地吻合.

 
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