What are the reasons for developing forminglimit diagrams? Do you have any specific criticisms of such diagrams? Explain. The reasons for developing the FLD diagrams
are self-evident by reviewing Section 7.7.1. Criticisms pertain to the fact that:
(a) the specimens are still somewhat idealized,
(b) frictional conditions are not necessarily representative of actual operations, and
(c) the effects of bending and unbending during actual forming operations, the presence
of beads, die surface conditions, etc., are not fully taken into account.
