PSI - Issue 2_A

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M. Perl, and M. Steiner/ Structural Integrity Procedia 00 (2016) 000–000

M Perl et al. / Procedia Structural Integrity 2 (2016) 3625–3646

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Fig. 2. The distribution of the residual hoop stress through the wall thickness of fully autofrettaged spheres ( ε =100%) of radii ratios R o /R i =1.1, 1.2, 1.7.

3. Three dimensional analysis The three dimensional analysis of the cracked sphere is based on Linear Elastic Fracture Mechanics (LEFM). The pressure vessel is modeled as an elastic sphere of inner radius R i , outer radius R O , and wall thickness t . Three different crack configurations are considered: