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The Research of CAD System based on Implicit Surfaces(SLIM) Kernel

基于隐式曲面(SLIM)内核的CAD系统研究

基本信息

批准号：
18360081
负责人：
KASE Kiwamu
金额：
$ 7.24万
依托单位：
The Institute of Physical and Chemical Research
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18360081/
关键词：
Implicit Surfaces(SLIM)CAD Kernel Triangular mesh Laplacian Deformation Conection to CAE and CAM 陰関数曲面 SLIM曲面 CAD カーネル

项目摘要

In the aim to realize the rewriting (standardization) of all internal data expression formats of CAD/CAM/CAE systems used in design and manufacturing fields by the implicit function method, we are focusing on the following four research themes which take implicit function surfaces as the kernel of CAD systems in design and manufacturing by primarily targeting solid model of surfaces. (1) Development of modeling kernel using implement function surfaces, and establishment of basic library (function group) of geometric processing, input/output processing, etc. as the modeling kernel. As a result, we are now able to apply smooth Laplacian deformation often used in triangular mesh deformation for SLIM surfaces, create linkage graphs on the mutual relations between center points of supports whenever required. This enables real-time dynamic volume deformation while retaining the shapes of minute parts. (2) Research and development on conversion methods from triangular mesh and surfaces to imp … More licit function surfaces, and development of conversion methods from triangular mesh or free form surfaces to implicit function surfaces. We are gradually realizing this by defining evaluation functions based on the distance from triangular mesh or free form surfaces to implicit function surfaces, and incorporating the process of minimizing this distance into the construction algorithm of implement function surfaces. (3) Development of operations and functions for CAD systems. For this theme, we have developed functions for testing coupling as well as reflection of highlight lines, etc. and for testing deflection from standard shapes such as planes, cylinders, spheres, etc. as functions of conventional CAD systems. We have also developed a rendering method using GPU which can directly show implicit function surfaces at high speed (this development received the 13th Image Electronics Conference Most Outstanding Paper Award), (4) Simulation and evaluation of prototype product shapes using CAD systems. For this theme, we are attempting linkage of simulation and evaluation to computational fluid dynamics simulation to take into account evaluation of engineers closely involved in design and manufacturing. Less