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STUDY THE EFFECTS OF PRESTRAINS IN EQUIBIAXIAL STRETCHING ON THE FORMING LIMIT DIAGRAM OF ALUMINUM ALLOY SHEETS (2024 T3) | ||
| AL-TAQANI | ||
| Article 1, Volume 24, Issue 2, 2011, Pages 0-0 | ||
| Abstract | ||
| The strain path for sheet metal may be changed during forming , this may be affect the forming limit curve (FLC) . In this work the FLC before and after prestraining was determined for aluminum alloy (2024 T3) to study the effect of this type of prestraining and in different values on the FLC. This alloy was chosen because it is used widely , specially in aircraft structures. It was shown that the using of The equibiaxial stretching (in the first stage), reduces the forming limit curve at all strain paths (in the second stage) . It was noted that, the major strain at Forming Limit Level, when prestrains in equibiaxial stretching path direction is used was lowered at the three levels of prestrain (0.3, 0.5 and 0.07) . | ||
| Keywords | ||
| Forming limit Diagram; Prestrain; Uniaxial Tension | ||
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