Abstract
Abstract Cylindrical tubes made of alloy steels such as Mild steel, HNS, Maraging steel and EN19 for defence applications are often subjected to blast loads in military application. However, there is very limited information available in the literature for the design of such tubes in case of blast loading due to explosion. In this paper, a mild steel perforated cylindrical tube of 600 mm length and 100 mm diameter with thickness of 5 mm is studied experimentally and numerically for its effective elastic modulus and transverse rigidity. Perforations of square and hexagonal pattern have been adopted for the current study purpose. Experimentally, axial deflection of the tube has been recorded for different degree of perforation. Numerical analysis is carried out using Abacus code for comparison and for developing theoretical concepts on effective elastic modulus and transverse rigidity. Presence of perforation in the tube is expected to mitigate blast impact on the tube subjected to blast loading for a quantified compromise on effective elastic modulus and transverse rigidity
Published Version
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