Determinations of Compression Buckling for Long and Intermediate Aluminum Alloy 2014-T4 Columns

Experimental tests were carried out on long and intermediate columns of 2014-T4 aluminum alloy stressed to compression buckling. 24 samples were used, divided into two groups (12 specimens before shot peening and ultrasonic impact peening (SP +UIP) and the rest after (SP +UIP)). The ultimate tensile strength (UTS) and yield strength (YS) were improved due (SP +UIP) by 2.60% and 3.030%, respectively. ANSYS 18.2 (APDL) with the theories of Euler and Johnson was theories was used to estimate the critical buckling load (Pcr) and compare the results with the experimental work. It was found that there was strong agreement between the theories of Euler and Johnson and theories and the experimental work, with safety factors of (1.6, 2.3) and (1.7, 2.5) for long and medium columns before and after the experiment, respectively (SP +UIP). In contrast, ANSYS 18.2 (APDL) provided good predictions with a safety factor of (2.1 and 2.6) and (1.8 and 2.6) for long and medium columns before and after (SP +UIP), respectively.