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Optimal Die Profile Design in Tube Drawing Process for Prevention of Material Fracture  

Lee, Sang-Kon (부산대 대학원 정밀기계공학과)
Kim, Sang-Woo (한국기계연구원 소성성형연구센터)
Lee, Young-Seon (한국기계연구원 소성성형연구센터)
Lee, Jung-Hwan (한국기계연구원 소성성형연구센터)
Kim, Byung-Min (부산대학교 정밀정형 및 금형가공연구소)
Publication Information
Journal of the Korean Society for Precision Engineering / v.23, no.11, 2006 , pp. 78-84 More about this Journal
Abstract
The objective of this study is to design the optimal die profile that can prevent material fracture in the tube drawing process for automobile steering input shaft. First, the CDV(Critical Damage Value) of material is obtained by the compression test and FE-analysis. The occurrence of fracture is estimated by the FE-analysis considering the CDV. In order to achieve the objective of this study, optimization technique and FE-analysis are applied. FPS(Flexible Polyhedron Search) method, which is one of the non-gradient optimization techniques often used in engineering, is used to search optimal die profile. The drawing die profile is represented by Bezier-curve to generate all the possible die profile. Using FPS method and FE-analysis the optimal drawing die profile is determined. To verify tile effectiveness of the redesigned optimal die, the tube drawing experiment is performed. In the experimental result, it is possible to produce sound product without material fracture using the redesigned optimal die.
Keywords
Optimal Die Profile; Steering Input Shaft; CDV; Optimization Technique; FE-Analysis; Bezier-Curve; Tube Drawing Experiment;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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