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The ring hoop tension test is an important test method for evaluating the deformation performance of tube. The mechanical model of the hoop tension test is established under the condition that deformation caused by the friction of the die is unequal. The mechanical model is input into the finite element model and compared with the tube uniaxial hoop tensile test. The mechanical model simulation obtained by this method has a better coincidence with the experimental data. Through further analysis of the bulging test of the process, it is proved that the established hoop mechanical model can accurately reflect the plasticity variation characteristics of the tube deformation.

Establishment and experimental verification of the hoop tension mechanical model of aluminum alloy tube