Journal of Computational Design and Engineering

Society for Computational Design and Engineering (한국CDE학회)
권호 표지
DOI QR코드

DOI QR Code

Implementation of persistent identification of topological entities based on macro-parametrics approach

  • Farjana, Shahjadi Hisan (Graduate School of Ocean Systems Engineering, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST)) ;
  • Han, Soonhung (Graduate School of Ocean Systems Engineering, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST)) ;
  • Mun, Duhwan (Department of Precision Mechanical Engineering, Kyungpook National University)
  • Received : 2015.07.28
  • Accepted : 2016.01.11
  • Published : 2016.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

In history based parametric CAD modeling systems, persistent identification of the topological entities after design modification is mandatory to keep the design intent by recording model creation history and modification history. Persistent identification of geometric and topological entities is necessary in the product design phase as well as in the re-evaluation stage. For the identification, entities should be named first according to the methodology which will be applicable for all the entities unconditionally. After successive feature operations on a part body, topology based persistent identification mechanism generates ambiguity problem that usually stems from topology splitting and topology merging. Solving the ambiguity problem needs a complex method which is a combination of topology and geometry. Topology is used to assign the basic name to the entities. And geometry is used for the ambiguity solving between the entities. In the macro parametrics approach of iCAD lab of KAIST a topology based persistent identification mechanism is applied which will solve the ambiguity problem arising from topology splitting and also in case of topology merging. Here, a method is proposed where no geometry comparison is necessary for topology merging. The present research is focused on the enhancement of the persistent identification schema for the support of ambiguity problem especially of topology splitting problem and topology merging problem. It also focused on basic naming of pattern features.

Keywords

References

  1. Capoyleas V, Chen X, Hoffmann C. Generic naming in generative, constraint-based design. Computer-Aided Design 1996;28(1)17-26. https://doi.org/10.1016/0010-4485(95)00014-3
  2. Chen X, Hoffmann C. On editability of feature-based design. Computer-Aided Design 1995;27(12)905-14. https://doi.org/10.1016/0010-4485(95)00013-5
  3. Chen X, Hoffmann C, Design compilation for feature based and constraint-based CAD, in: Proceedings of the third ACM Symposium on Solid Modeling and Applications (SMA'95), New York, NY, USA: ACM; 1995, pp. 13-19.
  4. Kripac J. A mechanism for persistently naming topological entities in history-based parametric solid models. Prague: University of Czech Technical; 1993.
  5. Agbodan D, Marcheix D, Pierra, G, Persistent naming for parametric models, Proceedings of the eighth International Conference in Central Europe on Computer Graphics, Visualization and Interactive Digital Media'2000, Czech Republicv: University of West Bohemia, Campus Bory, Plzen-Bory; 2000.
  6. Wu J, Zhang T, Zhang. A face based mechanism for naming, recording and retrieving topological entities. Computer Aided Design 2001;33(10)687-98. https://doi.org/10.1016/S0010-4485(00)00099-3
  7. Mun D, Han S. Identification of topological entities and naming mapping based on IGM for parametric CAD model exchanges. Int. J. CAD/CAM 2005;5(1)69-81.
  8. Cheon SU, Mun D, Han S, Kim BC. Name matching method using topology merging and splitting history for exchange of feature-based CAD models. Journal of Mechanical Science and Technology 2012;26(10)3201-12. https://doi.org/10.1007/s12206-012-0827-3
  9. Song I, Han S, Parametric CAD Data Exchange Using Geometry-Based Neutral Macro File, Cooperative Design, Visualization, and Engineering, in: Proceedings of the "7th International Conference, Mallorca, Spain: CDVE 2010 Calvia; September 19-22, 2010 .
  10. Choi G-H, Mun D, Han S. Exchange of CAD part models based on the macro-parametric approach. International Journal of CAD/CAM 2002;2(1)13-21.
  11. Mun D, Han S, Kim J, Oh Y. A Set of Standard Modeling Commands for the History-Based Parametric Approach. Computer-Aided Design 2003;35(13)1171-9. https://doi.org/10.1016/S0010-4485(03)00022-8
  12. Raghothama S, Shapiro V. Topological framework for part families. Journal of Computing and Information Science in Engineering 2002;2(4)246-55. https://doi.org/10.1115/1.1558073
  13. Solidworks Homepage, ; 2015.
  14. CATIA Homepage, ; 2015.
  15. Mun D, Han S, Persistent Naming Method Using OSI(Object Space Information) and SN(Secondary Name), Korea CADCAM Conference; 2006.

Cited by

  1. Mechanisms of Persistent Identification of Topological Entities in CAD Systems: A Review vol.57, pp.4, 2018, https://doi.org/10.1016/j.aej.2018.01.007
  2. Variational B-rep model analysis for direct modeling using geometric perturbation vol.6, pp.4, 2016, https://doi.org/10.1016/j.jcde.2019.03.002
  3. Feature-based translation of CAD models with macro-parametric approach: issues of feature mapping, persistent naming, and constraint translation vol.7, pp.5, 2016, https://doi.org/10.1093/jcde/qwaa043