Browse > Article

CAD Interface using Topology Optimization  

Kim, Seong-Hoon (한양대학교 기계설계학과)
Min, Seung-Jae (한양대학교 기계공학부/자동차공학과)
Lee, Sang-Hun (국민대학교 기계자동차공학부)
Publication Information
Korean Journal of Computational Design and Engineering / v.14, no.4, 2009 , pp. 281-289 More about this Journal
Abstract
Topology optimization has been widely used for the optimal structure design for weight reduction and high performance. Since the result of three-dimensional topology optimization is represented by the discrete material distribution in finite elements, it is hard to interpret from a design point of view. In this paper, the method for interpreting three-dimensional topology optimization resuIt into a series of cross-sectional curve representation is proposed and interfaced with the existing CAD system for the practical use. The concept of node density and virtual grid is introduced to transform element density values into grid density and material boundaries in each cross section are identified based on the element volume rate to satisfy the amount of material specified in the original design intent. Design exampIes show that three-dimensional topology result can be converted into a form of curve CAD model and the seamless interface with CAD software can be achieved.
Keywords
CAD Interface; Topology Optimization; Finite Element Model; Virtual Grid;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Langer, H., Puhlhofer, T. and Baier, H., 'An Approach for Shape and Topology Optimization Integrating CAD Parameterization and Evolutionary Algorithms', Proceedings of Multidisciplinary Analysis and Optimization, AIAA-2002-5498, pp. 920-930, 2002
2 Tang, P.-S. and Chang, K.-H., 'Integration of Topology and Shape Optimization for Design of Structural Components', Structural and Multidisciplinary Optimization, Vol. 22, pp. 65-82, 2001   DOI   ScienceOn
3 Koguchi, A. and Kikuchi, N., 'A Surface Reconstruction Algorithm for Topology Optimization,' Engineering with Computers, Vol. 22, pp. 1-10, 2006   DOI   ScienceOn
4 Hus, M.-H. and Hsu, Y.-L., 'Interpreting Threedimensional Structural Topology Optimization Results', Computers & Structures, Vol. 83, pp. 327-337, 2005   DOI   ScienceOn
5 Norton, R. L., Machine Design: An Integrated Approach (3rd Ed.), Pearson Prentice Hall, Singapore, pp.94
6 www.altair.com
7 Olhoff, N., Bendsee, M. P. and Rasmussen, J., 'On CAD-integrated Structural Topology and Design Optimization', Computer Methods in Applied Mechanics and Engineering, Vol. 89, No. 113, pp. 259-279, 1991   DOI   ScienceOn
8 Lee, D. and Min, S., 'CAD Model Construction Using Topology Image', Transactions of the KSME, A, Vol. 27, No. 11, pp. 1925-1932, 2003
9 Borrvall, T. and Petersson, J., 'Large-scale Topology Optimization in 3D Using Parallel Computing', Computer Methods in Applied Mechanics and Engineering, Vol. 190, pp.6201-6229, 2001   DOI   ScienceOn
10 Gonzalez, R. C. and Woods, R. E., Digital Image Processing (Second Edition), Prentice Hall, pp. 116-136, 2002