The state of stress during deep drawing forming operation of a cup is
- A. In the flange of blank, uni-axial compression and in wall of cup, bi-axial tension and compression
- B. In the flange of the blank, uni-axial tension and in wall of cup, bi-axial tension and compression
- C. In the flange of the blank, bi-axial tension and compression and in the wall of cup, simple uni-axial tension
- D. Both flange and wall of the cup will have bi-axial compression and tension
Answer: C. In the flange of the blank, bi-axial tension and compression and in the wall of cup, simple uni-axial tension