J. Toribio
Crack growth resistance curveFinite element methodMaterials scienceStress concentrationStrain energy release rateResidual stressCrack tip opening displacementStress intensity factorStructural engineeringCrack closure
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This paper presents stress intensity factor (SIF or K) solutions for a semi-elliptical surface crack in a bolt subjected to tension, bending, residual stresses and nut loading. Solutions were numerically computed by a 3D finite element method (FEM) with quarter-point singular isoparametric elements along the crack line. The stress intensity factor was calculated through the stiffness derivative method, by using a virtual crack extension technique to compute the energy release rate. SIF solutions...
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