参数化模型的局部自动适应重用方法  

An Automatic Adaptation Reuse Method for the Subparts of Parametric Solid Models

作　　者：潘万彬[1,2] 高曙明[1] 陈翔[1] 

机构地区：[1]浙江大学CAD&CG国家重点实验室,杭州310058 [2]杭州电子科技大学数字媒体与艺术设计学院,杭州310018

出　　处：《计算机辅助设计与图形学学报》2016年第2期314-327,共14页Journal of Computer-Aided Design & Computer Graphics

基　　金：国家"八六三"高技术研究发展计划(2013AA041301);国家自然科学基金(61173125;61303136);浙江省自然科学基金(LQ15F020011)

摘　　要：在基于局部重用的零件设计中,设计人员会选择较复杂的可重用局部区域来替换当前零件模型中与其形状相似的简单局部,期间一般必须进行适应性修改且往往离不开人工交互.为了使得可重用局部区域能自动满足简单局部区域所蕴含的设计需求,提出一种局部自动适应方法.首先基于种子面过滤来确定两局部区域之间的对应面,并以此作为它们的关联元素;其次采用带定位信息的三维尺寸约束图来显式地表示参数化的局部形状尺寸和定位信息;最后基于对应面和带定位信息的三维尺寸约束图,通过尺寸传递和约束传递分别将简单局部区域的形状和定位信息自动、准确地传播到可重用局部区域.实验结果表明,该方法能有效地支持基于局部重用的零件设计.Adaptation plays a fundamental role in subpart reuse based part design and is usually human de-pendent. In common design works, designers often replace a simple subpart (possessing the design require-ments of shape and location information) in the current design model with an existing reusable subpart hav-ing a similar shape as the simple subpart but more complex. To enable the reusable subpart to smartly adapt itself to the design requirements implied by the simple subpart, a novel automatic adaptation reuse method for subparts is proposed. First, to determine the corresponding faces between the two subparts as their rele-vant elements, a seed face filter method is adopted. Second, to explicitly represent the parametric shape di-mensions and location information of a subpart, a 3D dimension constraint graph with location information is adopted. Finally, based on the corresponding face and the 3D dimension constraint graph, the reusable subpart automatically and accurately adapts its shape and location information to those of the simple subpart through dimension transferring and constraint transferring respectively. The experimental results show that the proposed method is effective for subpart reuse based part design.

关 键 词：模型局部 自动重用 对应面 形状传递 定位信息传递 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术]