An efficient and low cost experiment was conducted to investigate the influence of grain size effects on springback of thin sheet metal. A three-point bending setup was used to test Aluminum 1100 O-Temper and Brass 26000 1/2 Hard (H02). Thickness and average grain diameter were controlled to achieve a range of desired T/D (thickness/grain diameter) ratios because T/D ratio is a key factor that influences the springback behavior in micro sheet forming. The results from this experiment show that as T/D ratio becomes smaller (T/D > 1 → 1) the springback amount increases at a decreasing slope. And as T/D continues to become even smaller (T/D < 1) the springback amount begins to decrease. These behaviors demonstrate the influence of size effects on springback.
- Manufacturing Engineering Division
An Experimental Study of the Influence of Size Effect on Springback of Micro Sheet Forming
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Gau, J, Principe, C, & Yang, F. "An Experimental Study of the Influence of Size Effect on Springback of Micro Sheet Forming." Proceedings of the ASME 2006 International Manufacturing Science and Engineering Conference. Manufacturing Science and Engineering, Parts A and B. Ypsilanti, Michigan, USA. October 8–11, 2006. pp. 313-318. ASME. https://doi.org/10.1115/MSEC2006-21037
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