Reduced sector FEA model using 20 noded quadratic 3D brick elements with 2 elements in thickness direction for simulation of collapse mode shape and folding pattern of open ended thin walled circular Aluminum tubes under axial compression between rigid plates. Evolution of plastic zones / hinges along with comparison of progressive folding shape of circular Aluminum tube Finite Element model with 10 mm, 20 mm, 30 mm, 40mm 50 mm and 60 mm axial compression (from left to right).
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