This calculating results are consistent with the experimental results of dynamic plastic fracture of three point bend beam.

The Double-K Fracture Parameter of Concrete for Non-Standard Three Point Bending Beam Specimens

砼非标准三点弯曲梁试件双K断裂参数

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The Loading Capacity of Three Point Bending Beam With the Resistant Force of Cohesive Crack

黏聚裂纹阻抗的弯曲梁承载力

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Stability analysis of thin-walled members by degenerated three-dimensional beam element method

薄壁杆件稳定分析的三维退化梁单元法

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Double-K Fracture Parameter of Concrete and Its Size Effect by Using Three point Bending Beam Method

三点弯曲梁法研究砼双K断裂参数及其尺寸效应

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Study of dynamic fracture behaviour on three point bend beam with off center edge crack

含偏置裂纹三点弯曲梁的动态断裂行为研究

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In this paper, the author establishes the computer numerical model to calculate mechanical parameters with I-DEAS software by adopting simplified three dimensional beam element as the basis element for FEM and analyzes dynamic characteristic for JJ160/ 41-K type derrick under the design loading.

运用I DEAS软件，以简化的空间梁单元建立计算机FEM模型，对JJ160/41K型钻机井架进行了设计载荷下的动力特性分析。

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The stiffness equation for stringent three dimension beam column element was derived using nonlinear continuum mechanics and stability interpolation function considering shear effects, and the coupling effects between axial, flexural and torsional displacements were considered in the equation.

文中基于非线性连续介质力学理论和考虑剪切效应的稳定插值函数建立的严格三维梁柱单元刚度矩阵，包含了轴向、剪切、双向弯曲与扭转及其各耦合效应。

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For the cylindrical latticed intersected three dimensional beam system reticulated megastructure with single layer latticed intersected cylindrical shell substructure, the construction of structure, form parameters and support conditions are analyzed in this paper.

本文针对子结构为单层叉筒网壳的圆柱面交叉立体桁架系巨型网格结构，分析了结构的构成、形体参数、支承方式等；

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Three dimensional beam propagation method based on the series expansion method ( 3D SEM BPM) transform the BPM into the first order normal differential equations. The method has the merits of simple calculation and high calculation efficiency.

三维级数展开的光束传播法（3D SEM BPM）将BPM方程转化为一阶常微分方程组，具有计算方法简单和计算效率高的优点。

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Based on the theory of large deformation, the nonlinear geometric equation of three dimensional beam elements is deduced. Then, the computational principle and corresponding formulation of the creep analysis of geometric nonlinear structures are presented.

在大变形理论的基础上，给出了空间梁单元的非线性几何方程，阐述了几何非线性结构进行徐变效应分析的原理和方法，并建立了相应的平衡方程。

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The directional coupler based on the GaAs/ GaAlAs optical strip waveguide is analyzed using three dimensional beam propagation method based on the series expansion method ( 3D SEM BPM).

运用基于级数展开法（SEM）的三维光束传播法（3D SEM BPM）分析了由GaAs/GaAlAs条形光波导构成的定向耦合器。

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A Finite Element Analysis is used for calculation stresses and twist recovery angles of long blades and blade groups in steady operation with a three dimensional beam model.

本文采用空间扭曲梁单元，建立了一种用于扭曲长叶片和叶片组稳态应力及扭转恢复角计算的有限元法。

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The equations of motion of the other part of the foundation and the rotors are established by the model of three dimension beam elements.

用三维梁单元来建立基础底板以上的框架结构和转子系统的运动方程。

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Research on Dynamic Characteristic of Cylindrical Latticed Intersected Three Dimensional Beam System Reticulated Mega-Structure with Double Layer Grid Sub-Structure

平板网架子结构圆柱面交叉立体桁架系巨型网格结构的动力特性研究

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The apparent three dimensional beam element dynamical matrices were obtained according to the characteristic geometry shape of the blade.

结合大型叶片几何构形特点，导出了旋转叶片的空间梁单元动力矩阵的显式形式；

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Microcomputer program for calculating three dimensional beam transporting TRACE 3D/ PC

三维束流传输的程序&TRACE-3D／PC

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Theory of a three-beam interferometer

三光束干涉仪理论

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Design for the Rack of 80T Three Beam Four-post Hydraulic Press When Iacocca took over the ailing Chrysler Corporation in 1979 he did not forget what he learned at Ford.

带顶模缸的三梁四柱液压机的立柱和梁板设计当艾柯卡1979年接管危机四伏的克莱斯勒汽车公司时，他没有忘记他在福特公司学到的东西。

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By controlling the position of the mirror and the beam splitter, it gets three beam, four beam, six beam interference modulation map on the CCD, for image acquisition and signal processing respectively.

用633nm小激光器搭建激光干涉实验系统，通过控制反射镜、分束镜的位置，在CCD上成像得到了三光束、四光束、六光束激光干涉调制图，分别对其进行图像采集和信号处理。

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A three beam laser scattering system for simultaneously measuring the size distribution and velocity of particle is proposed in the paper. The constitution, measuring principle, signal sampling and data processing of the system are described.

提出了同时测量粒子尺寸和速度的三光束激光散射系统，叙述了系统的组成、测量原理、以及信号采集和数据处理。

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