In this paper we have derived that the intrinsic energy of a uniform light beam after passing through a sharp edge diaphragm is proportional to the total length of the diaphram edge .
本文导出 匀 幅 光束 刚通过硬边光阑后,其内禀能量正比于光阑周界的总长度。
Spiral reflector uniform beam pattern patented design .
螺旋形反光器, 统一 光斑,专利设计。
Firstly the accurate calculation method for free vibration of Timoshenko thin-walled beam was derived by solving the governing motion partial differential equation of monosymmetric uniform Timoshenko thin-walled beam element . Also the orthonormality condition of principal mode of free vibration of Timoshenko thin-walled beam was derived .
首先通过直接求解单对称 均匀Timoshenko薄壁 梁单元弯扭耦合振动的运动偏微分方程,给出了计算其自由振动的精确方法,并导出了Timoshenko弯扭耦合薄壁梁自由振动主模态的正交条件。
It shows that the differences between two results are quite small therefore it is appropriate to calculate natural frequency and generalized mass of box shaped VLFS with the analytical method of uniform beam .
经与 均匀 梁解析解的比较表明,两种方法差异不大。因此,采用 均匀 梁解析解来计算这种结构的固有频率和广义质量是完全可行的,简化了计算工作。
In the experiment large area uniform electron beam is generated by three types of velvet cathode and the uniformity of e beam is diagnosed .
对3种不同材料的天鹅绒阴极进行了实验研究,获得了大面积 均匀电子 束,并对电子束的横向及径向均匀性进行了诊断。
The problem of lateral vibration of an axially loaded infinite uniform beam with discrete supports at regular intervals is investigated in the paper .
研究了轴向静载荷作用下无限长 等间距支承 梁的横向振动问题。
The result of paper 5 w_2298 is that the system of uniform Timoshenko beam with one locally distributed feedback is exponentially stable when two wave speeds are equal and is not exponentially stable when two wave speeds are not equal .
文献5w_2335的结果是: 简支的一个局部分布控制的 一致Timoshenko 梁,当两波速相等时,系统是指数稳定的;当两波速不相等时,系统不是指数稳定的。
The suitability and Stability of the Distributed Viscous Damping and Uniform Single Beam System
具分布粘滞阻尼的 均匀单 梁系统的适定性与稳定性
Displacement Exact Solution of Uniform Cantilever Beam under Distributed Load
等截面悬臂 梁受均布荷载作用时位移的精确解
Based on amplitude weighting an approaching to function method for one-dimensional uniform linear array beam focusing in near field is proposed .
该方法易推广到面 阵和阵元辐射具有 不同偏振方向的横波或纵波近场 空间 波束聚焦计算中。
There are the main conclusions : ( 1 ) Two span uniform model beam ( 3 + 3 ) m with corrugated steel webs is designed and the results show shear lag phenomenon exists in the beam under loads .
主要工作及研究结论有:(1)设计和制作了(3+3)m的两跨 等截面波形钢腹板模型 梁,模型试验结果表明:在荷载作用下,波形钢腹板组合连续箱梁存在剪力滞后现象。
An approximate formula of the impact force of uniform strength beam during impacted
等强度 梁受冲击时的冲击力近似公式
To improve the energy efficiency of the inertial confined fusion ( ICF ) high-power laser system and sufficiently use the optical energy it is important to convert Gaussian laser beam into uniform beam .
为了提高惯性约束聚变高功率激光系统的整体效率和充分利用光能,需要将高斯分布的光束整形为 空间 均匀 分布 的 平顶 光束。
Finite difference ( FD ) and finite element ( FE ) methods are not only effective for uniform beam but also found to be more suitable for non-uniform cross-section beam of a single-link robotic flexible manipulator system .
有限差分法和有限元法不仅对于 均匀 梁的单连杆柔性机械臂系统的建模有效,而且较假设模态法等方法更适合于非均匀截面梁的柔性机械臂系统的建模。
Analysis of non - uniform beam on elastic continuous medium
弹性连续介质上 变 截面 梁的分析
By use of the FEM program the paper contrasts the differences of static calculation and stability analysis results of tapered portal frame structure analyzed by uniform section beam elements and tapered section beam elements respectively .
利用该程序,比较了分别用 等截面 梁单元和变截面梁单元对变截面刚架进行静力计算和平面内稳定性分析的差异。
Combining the blooming distortion phase distribution for a Gaussian beam and a uniform irradiance circular beam the relation between the grid spacing and Bradley-Hermann distortion number is deduce .
结合高斯光束及平台 光束准直传输热畸变后的相位分布,得到了网格间距与Bradley Hermann热畸变参数的关系。
Constructing the strain measurement system and studying characteristics of PVDF based on the experimental platform put up by uniform strength beam .
以 等强度 梁为实验平台,搭建应变测量系统,研究PVDF在拉伸工作模式下的特性。
With the development of computer and the analysis efficiency we introduce feedback mechanism into design to direct design and raise the rated capacity by analyses information . First carries on the optimization design to uniform strength beam and missile warhead with variational calculus .
随着计算机的发展和分析效率的不断 提高,我们引入反馈机制将分析信息直接应用于 指导设计,提高设计效率。
The exact dynamic transfer matrix is derived for a straight and uniform Bernoulli-Euler thin-walled beam element whose elastic and inertial axes are not coincident by directly solving the governing differential equations of motion of the beam .
通过直接求解 均匀Bernoulli-Euler薄壁 梁单元自由振动的控制运动微分方程,推导了其精确的动态传递矩阵。
At last when the strength of guiding magnetic field is 1.5 T and the cathode is 1 mm thick a uniform electron beam of 827 kV 8.22 kA 100 Hz is obtained .
最后取引导磁场为1.5T,阴极环厚为1mm,得到重复频率100Hz、 束压827kV、 束 流8.22kA、脉冲波形之间重复性很好的 均匀电子 束 输出。
In the paper the major work is putting forward the new engineering methods on control law and optimal configuration rule by the research in the uniform cantilever beam with actuators and transducers .
本文的主要任务就是通过对贴有压电陶瓷的 悬臂 梁进行主动振动控制技术研究,重点分析和研究了具有工程化的控制律算法和位置配置优化方法。
Firstly the analytical expressions of dynamic stiffness matrix of plane beam for transverse vibration with considering the shear distortion and rotary inertia of mass are presented by directly solving motion differential equations of a uniform Timoshenko beam .
首先通过直接求解 等直 Timoshenko 梁 单元的运动微分方程,导出考虑剪切变形和转动惯量影响的平面梁单元动态刚度阵的解析表达形式;
The function of vaginal progesterone supplementation in IVF Displacement Exact Solution of Uniform Cantilever Beam under Distributed Load
黄体酮胶囊在体外受精治疗中的黄体支持作用 等截面悬臂 梁受均布荷载作用时位移的精确解
In this paper based on the study of the curved beam the first time the numerical solution of the curve uniform beam shear lag effect .
本文在曲线梁的研究基础上,也首次得到曲线 变 截面 梁的剪力滞效应的数值解答方法。
美[ˈjunəˌfɔrm bim]英[ˈju:nifɔ:m bi:m]
均匀梁,等截面梁