FE simulation of shape accuracy using the Multi-Point Stretch-Forming process
by Shao-Hui Wang, Zhong-Yi Cai, Ming-Zhe Li
International Journal of Materials and Product Technology (IJMPT), Vol. 38, No. 2/3, 2010

Abstract: Multi-Point Stretch Forming (MPSF) is a new technique to form aircraft outer skin parts. In MPSF, the sheet metal is formed over a discontinuous surface of discrete stretching die. The size of punch element of multi-point die, the thickness of sheet metal and the thickness of elastic cushion are the important factors to affect the accuracy of MPSF part. In this paper, a series of numerical simulations on MPSF processes were carried out, and the shape error and the non-uniformity in thickness distribution of MPSF part were analysed. The results show the influences of the punch element size, the sheet metal thickness and the elastic cushion on forming results.

Online publication date: Wed, 10-Mar-2010

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