通过引入初始曲面概念，提出了基于物体重心的采样算法模型。
Based on the basic surface and gravity center concept, the paper presents the surface-digitizing model.
提出了一种以中心三角片为基三角片的涟漪式初始曲面展开方法。
A ripple-style initial flattening method was presented, which used the center-triangle as the base triangle.
初始曲面拟合是利用UG的二次开发功能，将截面线与边界曲线拟合成一张初始曲面。
Original surface is formed from boundary curve and section curve using the redevelopement interface of UG.
本文根据几何非线性有限元理论，提出张力膜结构初始形态分析的8结点曲面四边形等参单元。
Based on the geometrical nonlinear finite element (GNFE) theory, a curved quadrilateral isoperimetric element with 8 nodes for initial form analysis of tensile membrane structures is presented.
即在建筑师给定预想的曲面形状的前提下，找出与此曲面相接近的初始平衡状态—初始张力的大小、分布和几何形状。
The aim of this part is to find an initial equilibrium state , the value and distribution of tension force and the geometry of the surface, when the location of the control points are confirmed.
根据几何非线性有限元理论，提出张力膜结构初始形态分析的8结点曲面四边形等参单元。
Based on geometrical nonlinear finite element theory, a curved quadrilateral isoperimetric element with 8 nodes for initial form analysis of tensile membrane structures is presented.
首先，在芯模外侧创建与铺丝路径相对应的特定曲线，然后将曲线按特定方向投影在指定的偏置曲面上，形成初始路径。
First, a specific curve is created around the core module, and then it is projected on to specified surfaces in a particular direction and the projections are taken as initial paths.
本文根据几何非线性有限元理论，提出张力膜结构初始形态分析的8结点曲面四边形等参单元。
Based on geometrical nonlinear finite element theory, a curved quadrilateral isoperimetric element with 8 nodes for initial form analysis of tensile membrane structures is presented.
作为曲面造型的重要分支，网格细分是以计算机为工具，对一个初始控制网格，采用某种方法对网格进行多次细化，直到满足指定的光滑度和细腻度。
As an important part of Surface Modeling, mesh Subdivision used to smooth an initial control mesh several times using some method, until up to the specified degree of smoothness.
根据几何非线性有限元理论，提出张力膜结构初始形态分析的8结点曲面四边形等参单元。
Based on the geometrical nonlinear finite element (GNFE) theory, a curved quadrilateral isoperimetric element with 8 nodes for initial form analysis of tensile membrane structures is presented.
不同屈服应力定义对初始屈服曲面的后继屈服曲面的影响；
The effect of the definition of yield stress on the initial and subsequent yield surfaces.
首先将加工曲面分片，选取合适的初始点。
The machining surface is divided into some chip and a right initial point is selected at first.
根据几何非线性有限元理论，提出张力膜结构初始形态分析的8结点曲面四边形等参单元。
Based on geometrical nonlinear finite element theory, a curved quadrilateral isoperimetric element with8 nodes for initial form analysis of tensile membrane structures is presented.
应用该方法设计了椭球面、不规则曲面的初始坯料，计算了马鞍型样件的最优成形路径。
Initial blanks for ellipsoidal objective surface and an irregular surface were calculated and the optimum forming path for a saddle objective surface was designed by the presented methods.
针对复杂曲面类零件加工余量分析过程中的测量数据匹配问题，提出通过初始匹配和精确匹配来实现曲面测量数据的最佳匹配。
An optimization method was presented for best-fitting of measurement point cloud to the complex surfaces, which consists of rough matching and accurate matching.
交互式的初始匹配过程决定后续算法的变量范围，精确匹配确定测量数据与曲面的最佳匹配姿态。
The rough matching decided the variable range of the follow-up algorithms, whereupon the accurate matching acquird the optimal location.
通过使用通用的三维曲面模型，可以对设计文件进行优化，使其准确用于概念设计、初始设计和详细设计阶段。
By using a common 3d surface model, design files can be optimized to accurately flow through concept, initial, and detailed design stages.
通过使用通用的三维曲面模型，可以对设计文件进行优化，使其准确用于概念设计、初始设计和详细设计阶段。
By using a common 3d surface model, design files can be optimized to accurately flow through concept, initial, and detailed design stages.
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