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  “荷载”译为未确定词的双语例句
    Optimal Design of Thin Elastic Plate Under Arbitrarily toad
    在任意分布荷载作用下 弹性实心薄板的优化设计
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    FEM Analysis of Bending Vibration of a Pipe Conveying Fluid during Vertical Earthquake
    竖向地震荷载下输液管道弯曲振动的有限元分析
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    Therefore, it is important both on theory and practical application to perform the dynamic reliability analysis for the structures.
    因此对结构进行在动力荷载作用下的可靠性分析具有重要的理论价值和实际工程意义。
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    That is, the value of Nlayers with Bloads in Mpoints is computable, so it is called 《N-B-M》 program.
    N层路面在B个荷载下M个计算点的计算值,故简称《N-B-M》程序。
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    By way of direct calculation, a sixteen dimension representation space was reducted in terms of group S_4 and group SU_2. This space was obtained by four direct products of the foundation representation space of group SU_2. The basic fundations of the irreducible represen- tation of group S_4 and group SU_2 were figured out.
    本文用直接计算的方法,对由SU_2群的基础表示空间四次直乘得到的十六维空间分别按S_4和SU_2进行约化,并求出荷载S_4和SU_2不可约表示的基函数。
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The gabled lean-to mill bent is an irregular rigid frame. The classical methods, e. g., the method of least work, slope-deflection, etc., for the analysis of the rigid frame are too tedious to be accepted, because they are not only dependent on the solution of simultaneous equations, but also the difficulty in establishing the equations. The method of moment distribution for computing the stresses of the same structure is also tedious because there are a great number of joint rotations and displacements involving...

The gabled lean-to mill bent is an irregular rigid frame. The classical methods, e. g., the method of least work, slope-deflection, etc., for the analysis of the rigid frame are too tedious to be accepted, because they are not only dependent on the solution of simultaneous equations, but also the difficulty in establishing the equations. The method of moment distribution for computing the stresses of the same structure is also tedious because there are a great number of joint rotations and displacements involving in the gabled lean-to mill bents.A new method, symmetry-antisymmetry method, for computing the stresses in symmetrical gabled lean-to mill bents is presented in this paper. The foundamental conception of this method is to determine the shape constants and load constants of the unsymmetrical Γ-shaped frame as a whole and to treat it as a single member in the analysis.

關於披屋廠房排架的應力分析,目前已有不少切實可行的方法。但以這類排架內部組織的特殊,一般通用的基本方法,多不能為實際工作者赢得時間和精力的充分節約。本文目的,在提供一個分析對稱式斜頂披屋廠房拂架的簡便方法,予以適當修正,並可推廣應用於其他各種類型的披屋廠房排架。本法的主要特點是將排架中具有“Γ”形的曲桿當作一個基本構件,從而求出這個基本構件在兩端結點角變和位移以及荷載作用下的“形常数”與“載常數”;並將不對稱荷載件成“對稱的”與“不對稱的”兩種情形,使在分析計算過程中必須考慮平衡的結點數目诚至最少程度。

Calculation of Vertical pressures in soil is the prerequisite for estimating settlcments of foundation. Up to the present, the methods used for calculations are based on Boussinesq's and Flament's formulas, which were derived on an assumption that the load is acting at the surface of ground.Mindlin (1936) derived a formula on the assumption that the load actsat a certain depth below the surface of ground. Althought Mindlin's assumption is closer to actual conditions, his formula was not used in engineering computations...

Calculation of Vertical pressures in soil is the prerequisite for estimating settlcments of foundation. Up to the present, the methods used for calculations are based on Boussinesq's and Flament's formulas, which were derived on an assumption that the load is acting at the surface of ground.Mindlin (1936) derived a formula on the assumption that the load actsat a certain depth below the surface of ground. Althought Mindlin's assumption is closer to actual conditions, his formula was not used in engineering computations becouse it is too complicated.In the present paper, based on Mindlin's Formula, the writer derived formulas for calculating vertical pressures in soil under the following cases:(1) Rectangular footing with uniform distributed loading;(2) Rectangular footing with triangular distributed loading;(3) Strip footing with uniform distributed loading;(4) Strip footing with triangular distributed loading;(5) Circular footing with uniform distributed loading.

在計算基础的沉陷时,首先必须算出地基中所受之应力。到目前为止,一般都以鲍沁乃斯克(Boussinesq)和弗拉蒙(Flament)的解答为根据,而导出分佈荷载的公式例如勒浮(Love)公式来进行计算。这两个解答是假定荷载是作用在弹性半空间体的表面上(地面上)的条件而导出的。可惜,一般基础都深埋入地基中有某一深度(砌置深度),这与以上的假定就有显著的出入,美国学者明特林(Mindlin)在1936年已导得半无限体內受集中力作用所引地基中应力的公式。但以后土力学工作者对明特林公式的研究和发展是不够的。由于日今計算沉陷量一般远较观察沉陷量为大,而以鮑氏公式算得的垂直应力比明特林公式的垂直应力大得多,故也可以从应力计算的方法上去找到计算沉陷量太大的部分原因。因此进一步研究明特林公式乃是有必要的。本文即以明特林公式为依据,推导出矩形面积均佈荷载下的应力公式,矩形面积三角形荷载下的应力公式,条形面积均佈荷载下的应力公式,条形面积三角形荷载下的应力公式,圆形面积均佈荷载下的应力公式等等。

This paper is a generalization of H. Hapel's paper "Ueber das Gleichgewicht von' elastischen Plaiten unter einer Einzellast" (Mathematische Zeitschrift, 6, 1920). It differs from Hapel's paper in four respects:(1) Both symmetrical and unsymmetrical loadings are discussed in detail.(2) Origin ,of coordinates are placed at the corner of the plate instead of at the center. In this way the functions U, V and its integrals are considerably simplified.(3) Both isotropic and ofthotropic plates are treated.(4) Both...

This paper is a generalization of H. Hapel's paper "Ueber das Gleichgewicht von' elastischen Plaiten unter einer Einzellast" (Mathematische Zeitschrift, 6, 1920). It differs from Hapel's paper in four respects:(1) Both symmetrical and unsymmetrical loadings are discussed in detail.(2) Origin ,of coordinates are placed at the corner of the plate instead of at the center. In this way the functions U, V and its integrals are considerably simplified.(3) Both isotropic and ofthotropic plates are treated.(4) Both Ritz's and Galerkin's methods of variation are used to solve the problem. In the paper the variation equations are tabulated in a standard form and the values of the func-tions U, V and its second derivatives at 11 × 11 points are also listed. Once the dimensions a,b and the rigidity D of the plate, the modulus k of the foundation and the concentrated loads P are known, the reader may calculate the deflections of, and the moments in the plate by directly applying these equations.

本文利用黎茲的变分原理,提供了弹性地基上自由边矩形板的計算方法。文中将变分方程写成簡单的形式,将11×11个点的位移函数及其二阶导数列成表格,读者只须将板的尺寸a,b、刚度D、荷载P(x/a,y/b)、地基的弹性模量k代入,經过簡单的計算即可求得板各处的位移及挠矩。

 
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