So that , three topics in rapid development technology for complex shape product are studied in this paper : key technology for complex shape product reverse engineering ( re ) modeling , integrating technology between re system based on triangular bezier surface ( tbs ) modeling and rp system , and investigation of rapid development system frame for complex shape product 为此，作者围绕复杂外形产品快速开发技术，深入开展了三方面研究工作：复杂外形产品re建模关键技术、基于tbs建模的re系统与rp系统集成技术和复杂外形产品快速开发系统框架研究。
The scc has the following advantages : remarkably reducing the noisy pollution and the worker s labor intensity in construction , deducing the rough surface or segregation because of missing - vibration or excessive - vibration in conventional construction , resolving the quality - defect problems resulting from lacking - vibration in the section of complex shapes and densely - packed reinforcement area . at the same time , large of industrial solid waste such as fly ash and blast furnace slag is utilized in the proportioning of scc . it is helpful in comprehensive utilization of resource and environment protection , so the scc belongs to " green concrete " , it is a branch of hpc which will be developed in the future 这种混凝土可以显著降低混凝土施工中的噪音污染；大幅度减轻工人的劳动强度；减少传统混凝土施工中因漏振或过振造成的麻面或离析；解决了配筋密集、结构复杂部位因振捣不足而造成的质量缺陷问题；同时，由于自密实混凝土在配制中，大量利用粉煤灰、高炉矿渣等工业固体废弃物，有利于资源的综合利用和生态环境的保护；从而被誉为“绿色混凝土” ，是未来混凝土向高性能发展的方向之一。
Compared with traditional optical materials , the specific stiffness of sic is much bigger . if the structural dimension is the same , the lightweight extent of sic components is the highest . furthermore , sic have these merits of low thermal distortion , excellent optical performance , isotropy , innocuity and molding for complex shape 与传统光学材料相比， sic的比刚度最大，在尺寸相同的条件下，其轻量化程度最高；此外，它还具有热变形系数小、光学性能好、各向同性、无毒、能够实现复杂形状的近净尺寸成型等优点，因而成为空间反射镜的首选材料。
Second , a parallel adaptive ray - casting algorithm for graphic rendering of cfi is developed . in the computational model of cfi , the line - of - sight integration is difficult to obtain for 3d complicated flow field , because curvilinear grids , multizone curvilinear grids , and other irregular grids that are commonly used in computational fluid dynamics ( cfd ) present interesting challenges , such as the complex shapes of cell regions defined by grid points ; the wide variation in the sizes of cells in different regions of the grid ; and the intersecting or overlapping nature of multi - grids . the parallel adaptive ray - casting algorithm is extremely efficient to solve these problems 并行自适应光线投射法继承了光线投射法适合于任何形式网格的优点；光线与计算网格的交点自适应地反映了原来网格点物理量的分布，能够与数值计算的精度保持一致；图像平面的自适应算法使我们不必从每一个像素发出射线，既提高了光线投射法的计算效率，同时又保证重采样后激波这样的高频信息不会损失；将并行处理技术引入计算光学流动图像生成过程，解决了大规模数值模拟结果的处理对计算速度和内存容量的需求。
In recent years , a triangular mesh model from a given point cloud has been sufficiently researched . however , there is the problem of huge data and low quality of triangle mesh . with the development of coordinate measure system , scattered point cloud data which contain more details of the complex shape object , can be obtained conveniently 由于在将点云数据转换成三角网格模型时信息量成倍增加,且后续处理对网格质量要求较高,因而,研究直接以散乱点云数据为对象的数据处理与曲面重建技术,对提高逆向工程中测量数据的处理能力和建模效率具有重要意义。
In addition , we often encounter a general problem - it is very difficult to describe a complex shape with a single bezier curve precise . method of bezier definites shape of curve , which is global project . if you locally modify curve , it is necessary to affact the global . it is that method of bezier has character of global control , but it has not charater of local control . by way of arbitrary partition . arbitrary degree elevation , that may increases control point . increases potential active character of controling curve . therefore , the thesis discusses mainly the problem of local free - form deformation , which may make bezier curve deform continuely and gain wanted figures . however , no matter what free - form deformation based on extension factor for parametric curve or arbitrary partition will reduce smoothness of parametric curve 另外，我们经常会遇到一个普遍问题，就是难以用单一的贝齐尔曲线段描述复杂的形状。贝齐尔方法对形状的定义是整体方案，欲对其作局部修改，必然会影响到整体，即贝齐尔方法是有整体控制性质，但却缺乏局部控制性质。通过任意分割和任意升阶得出所要变形的一段，以及增加控制点，增加对曲线进行控制的潜在灵活性。
Due to unreliable phase value and under - sampling in practical situation , especially when a complex shape is measured , phase unwrapping is a difficult step . there is no solution suitable to all the problems of phase unwrapping though many algorithms have been presented in the recent 20 years 在实际应用中，特别是测量复杂的物体三维面形时，由于采样不足以及噪声阴影等原因，使实际位相图中存在很多可能引起展开失败的奇点，如何找到它们并尽量减少其影响是大多数位相展开算法的难点。
Three dimensional braided composite is one kind of textile composite . structures with complex shape can be manufactured easily by three dimensional braiding technologies . three dimensional braided composite has higher impact resistance and higher damage tolerance than other textile composite have 三维编织复合材料是纺织复合材料的一种，三维编织技术可以制造任意复杂形状的构件并且三维编织复合材料具有更高的抗冲击性能和损伤容限，使三维编织复合材料的研究受到高度的关注。
Gao shengtao ( electrical engineering ) directed by qi zhiping & wang ping with the development of numerical control technology and the wide spread application of complex shaped parts , pc - based numerical control systems are widely used in many fields , including : mechanical , electronic , computer , and automaticcontrol 随着数控加工技术的发展和复杂曲面零件的广泛应用，基于pc的数控系统被广泛应用于机械、电子、计算机、自动控制、检测等各个领域，人们对专门用于运动控制的多轴联动伺服控制卡的要求也越来越高。
Traditional manual programming could not satisfy the programming requirement of complex shape parts already , but adopting the technology of automatic program not only shorten manufacture cycle of products to a great extent but also enhance the machining quality of products and capability of competition in the market , thus this technology has remarkably economic benefit and extensive foreground 传统的手工编程已不能满足复杂形状零件的编程需求，而采用自动编程技术大幅度地缩短了产品的制造周期，提高了产品的加工质量和市场竞争力，因而具有显著的经济效益和广阔的发展前景。
