STUDY THE INFLUENCE OF SHOT PEENING TIME ON BUCKLING BEHAVIOR OF MEDIUM CARBON STEEL (CK 35) UNDER DYNAMIC LOADING (EXPERIMENTALLY AND NUMERICALLY)

Abstract

A study of dynamic buckling behavior (experimentally and numerically) under increasing load had been conducted on medium carbon steel (CK35) specimen. 24 specimens were tested under compression loading, 12 specimens are long and others are intermediate. All these specimens were tested under four shot peening times (SPT) (0, 15, 25, 30) minutes. It was concluded that, the best buckling strength was appeared at (25 min) shot peening time. Also, the comparison between the experimental and numerical results showed good agreement between these results with maximum difference was about (12%).