Experimental and Numerical Investigation on Ductile Fracture of Aluminum ۱۱۰۰ at Different Stress States

Using ductile metals like aluminum is increasingly considered in the industry these days. This metal is particularly considered by engineers due to its high corrosion resistance. In this paper, the uniaxial tensile and fracture strain processes are analyzed and studied, which are essential topics viewed by designers of forming processes. The ۱۱۰۰ aluminum alloy is used in this paper. Workability and good machining capability are among the most important characteristics of aluminum. This metal can be cast using all known methods. To this aim, the mechanical properties of the considered sheet are to be calculated through tensile test. The mechanical properties specified by performing tensile test on dog bone specimen according to the ASTM E۸ standard. Then, the notched specimens are fabricated considering the stress triaxiality values. The uniaxial tensile test is conducted on the fabricated specimens. It is noteworthy that the experiment continues up to the fracture moment. After this point, the fracture strain is determined in the different stress triaxialities. The mechanical behavior of the material is modeled using Abaqus simulation software, and the characteristics of the material are determined. Finally, the acquired numerical results are compared with the experimental results to be validated. By comparing the acquired simulation and experimental results, it could be deduced that the fracture strain is calculated with a high precision.

Keywords:

۱۱۰۰ aluminum , fracture strain , stress triaxiality