Contact problem for the autofrettage of thick cylinders

Lvov, Gennadiy and Lysenko, Sergey (2002) Contact problem for the autofrettage of thick cylinders. JOURNAL OF COMPUTATIONAL AND APPLIED MECHANICS, 3 (1). pp. 51-60. ISSN 1586-2070

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Abstract

The autofrettage of thick-walled cylinders with variable thickness is considered on the basis of a variational formulation of the corresponding elastic-plastic contact problem. The numerical solution is determined by the use of the finite element method. We have chosen a material model which takes kinematic hardening and the ideal Baushinger effect into account. The optimum geometric parameters for the bandage and the initial gap are both determined in a way that a favorable distribution of residual stresses will develop and the bandage is removed after unloading.

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