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AFFECTING THE DETERMINATION OF FORMING LIMIT DIAGRAM FOR SHEET METALS | ||
| Tikrit Journal of Engineering Sciences | ||
| Article 1, Volume 12, Issue 4, 2005, Pages 67-98 PDF (0 K) | ||
| Abstract | ||
| The sheet metal forming is defined as the ability of metal to deform plastically (stretch forming) without necking or fracture . to control the sheets forming operation failure a diagram is used , in which the ; accepted forming , failure and critical regions are shown . this diagram is known as “Forming Limit Diagram”(FLD) . It is considered as an important tool to determine the formability of sheet metals . The forming limit diagrams for Aluminum , low carbon Steel and Brass were constructed experimentally as received and after annealing (with and with out lubrication) . Results have shown that the forming limit diagram for Brass was the highest and for Aluminum was the lowest . Annealing and lubrication have increased FLD for all metals in different quantities . Highest values of strain limits were appeared in FLD using both annealing and lubrication in the same time (widening limit curve) specially in brass . | ||
| Keywords | ||
| sheet metal forming; Forming limit Diagrams; Stretch Forming | ||
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