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http://dx.doi.org/10.3795/KSME-A.2014.38.8.899

Study of Blank Thickness Optimization in Free Bulging for Maximizing Bulged Height  

Yoo, Joon-Tae (Korea Aerospace Research Institute)
Yoon, Jong-Hoon (Korea Aerospace Research Institute)
Lee, Ho-Sung (Korea Aerospace Research Institute)
Youn, Sung-Kie (Dept. of Mechanical Engineering, Korea Advanced Institute Science and Technology)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.38, no.8, 2014 , pp. 899-904 More about this Journal
Abstract
Thickness profiled blank is designed using optimization techniques for maximizing the bulged heights during the free bulging of Inconel 718. The thickness of the blank was described by the Bezier curve and the locations of the control points were used as the design variables for optimization. The maximization of the bulged heights within the limited strain range served as the objective function and constraints for optimization. The equivalent static loads method for non-linear static response structural optimization (ESLSO) was used and the result of the optimization revealed 22 increased bulged heights. A free bulging test using a blank with an optimized profile was conducted to verify the optimization process. The results were compared with those of numerical analysis in terms of bulged height and deformed shape.
Keywords
Blow Forming; Free Bulging; Hot Forming; Equivalent Static Load; Optimization;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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