Energy Absorption Capacity of Thin Walled Circular Aluminium Sections

In this research, capacity of thin walled circular aluminium tubes to sustain plastic deformation was tested under quasi static axial compression forces. For this purpose test was conducted in two segments, starting from the computational part, performed on finite element code ABAQUS, where the tubes of D/T ratio 7.23, 11.40, 23.61, and 24.41 and L/D ratio as 4.56, 4.23, 4.11, and 3.94 were modeled to compress them under static compression loads and observe the nature of collapse along with load carrying capacity for individual test piece while the identical test were done on compression testing machine to verify the existence of results obtained from computational analysis. Finite element code has been taken in use due to its versatility in complex problem solving skills. Tensile testing was also performed to identify the nature of aluminium material through stress strain curve, whose values were employed further in computational analysis for embedding the properties of modelled specimens. Observations of collapse modes and maximum load carrying capacity was compared at the end, both the results of computational as well as practical analysis were in found good agreement with each other. Finite element method had also proved its significance in the prediction of modes of collapse on thin walled structures.