In the model , components of upper frame structures , such as beams and columns , are simulated with plane 4 - node quadrilateral parametric elements , and soils with plane 4 - node quadrilateral parametric elements 模型中采用平面四结点等参数单元模拟上部框架结构的梁柱构件。
In order to deal with different kinds of building shapes , body - fitted quadrilateral grids are arranged in the inner domain and rectangle girds in the outer domain 为适应不同建筑体型的需要，本文提出在内层区域布置贴体的任意四边形网格，而在外围区域布置直角坐标矩形网格的分层网格离散模式。
The grid auto - generation of the inner and outer domains is carried out by generating a small number of quadrilateral super elements and each super element then further discretized into smaller elements 内、外两层区域的网格自动生成，先将各区域划分为数量较少的四边形超单元，然后对各超单元逐个剖分。
The floor was sand . before a big fire lay captain smollett ; and in a far corner , only duskily flickered over by the blaze , i beheld great heaps of coin and quadrilaterals built of bars of gold 斯莫列特船长躺在一大堆火前闪烁的火光隐约照到远处的一个角落，我看见那里有几大堆金币银币和架成四边形的金条。
Based on 4 - nodes quadrilateral mixed interpolation shell element and total lagrange formulations , elastic - plastic finite element analysis was made for the mechanical behavior of circular radial slotted plane rupture discs 摘要基于t . l .列式，采用四边形四结点混合壳元对平板透缝爆破片的力学响应进行了弹塑性有限元分析。
The shape of cross section of gravity dams under basic loads was optimized from an initial quadrilateral region with the stability of dam bodies against sliding and the tensile stress in dam heels taken as restraints 以四边形为初始域，以重力坝的稳定和坝踵拉应力为约束条件，对基本荷载作用下的重力坝基本断面形状进行优化。
In the first part , we give the inner radius of univalency for fan - shaped domains and for quadrilateral domains with vertexes on a circumference and sides forming the sequence abba . also we estimate the inner radius of univalency for rectangles 在第一部分中，我们给出了扇形和四边为abba形式的圆内接四边形的单叶性内径，并给出了长方形区域单叶性内径的下界估计。
This paper discusses the ability of avoiding maximal power flow of quadrilateral impedance relay and round impedance relay in detail and puts forward the setting principle and setting method of load limiting resistor of backup distance protection 本文对四边形和方向圆特性阻抗继电器躲线路最大潮流的能力进行了详细分析，提出了距离保护负荷限制电阻的整定原则和整定方法。
The duct and it ' s vortex is discreted by a number of small straight quadrilateral panel . constant source and doublet distribution is placed on each panel on the surface of body , and constant doublet distribution is placed on each panel on the surface of vortex 以面元的几何形心为控制点，在每个物面面元的控制点上布置等强度的源汇分布和偶极子分布，每个尾涡面面元控制点上布置等强度的偶极子分布。
A uniformly sampling algorithm of three - dimensional segmented quadrilateral boundary domain and an uniformly distributed sampling point optimized method based on force equilibrium are presented . then on basis of the above researches , the smooth b - spline surface fitting is implemented 提出了一种空间四边界区域的均匀采样方法以及基于力平衡原理的采样点均匀分布优化方法，实现了三角网格模型的重新均匀采样和参数化。
