دراسة تأثير الانفعالات المسبقة في الشد آحادي المحور على مخطط حد التشكيل لصفائح من سبيكة الألمنيوم (T3 2024)

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 uniaxial tension prestrain affects the FLC . The major strain in right side is increased with the increasing in the prestrain , while in the left side the effect is small .