Representation and generation method of digital twin-oriented product skin model

被引：0
|
作者：
Yi Y. [1 ]
Liu X. [1 ]
Feng J. [2 ]
Liu T. [3 ]
Liu J. [2 ]
Ni Z. [1 ]
机构：
[1] School of Mechanical Engineering, Southeast University, Nanjing
[2] Beijing Spacecrafts Limited Company, Beijing
[3] School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing
来源：
Jisuanji Jicheng Zhizao Xitong/Computer Integrated Manufacturing Systems, CIMS | 2019年 / 25卷 / 06期
关键词：
Digital twin; Geometrical product specifications; Mapping generation method; Model representation; Non-ideal skin model;
D O I：
10.13196/j.cims.2019.06.013
中图分类号：
学科分类号：
摘要：
The product digital twin model is considered to achieve a deep integration of physical world and virtual world as a potential effective solution. Aiming at the practical application requirements of a reasonable and accurate digital twin geometrical model in the product life cycle, a geometrical reference representation method based on non-ideal skin model for realizing the digital twin model was proposed. Through introducing new-generation Geometrical Product Specifications (GPS), a complete representation scheme of digital twin model was defined by using geometrical feature and the related operator. Meanwhile, the two mapping generation methods and creation process of digital twin-oriented product non-ideal skin model were analyzed. On this basis, the specification skin model was generated by adding geometric error information to the discrete mesh CAD model. According to the idea of reverse modeling, the verification skin model was generated by multi-scale representation of surface topography errors using the method of discrete geometry and wavelet analysis based on discrete point cloud data of real measurement. The feasibility of the proposed method was verified by a case analysis of part instance. © 2019, Editorial Department of CIMS. All right reserved.
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页码：1454 / 1462
页数：8
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