Effect of Arrangement of holes on Strength and Rigidity of Perforated Strips

Abstract

In this paper, as a basic study on the strength and rigidity of ship's deck girders or bottom girders with holes, the static strength, rigidity and fatigue strength of steel strips with circular holes arranged in saw-tooth pattern, were investigated, theoretically and experimentally. Elasto-plastic analysis by finite element method was used to calculate the static strength and rigidity of these strips under tension, and these results were in good agreement with experimental results. The fatigue test under constant repeated loads was carried out to evaluate the fatigue strength. Furthermore, the effect of the pitch of holes and the distance between rows of holes on the strength and rigidity of these strips was also discussed.