Abstract
In multistage deep drawing process, the subsequent drawing force (SDF) is a key reference value, which plays a significant role on the practical die structure design. In the present study, an analytical calculation of the radial stress at the die exit as well as the SDF in cylindrical cup drawing process are proposed, considering the previous strain hardening in the first drawing, normal anisotropy, frictional coefficient and die arc radius. As a result, the calculated maximum subsequent drawing force (MSDF) is in good agreement with experimental result. Besides, the MSDF decreases as normal anisotropy value increases, while increases as frictional coefficient and strain hardening exponent increases respectively.
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