Multiple crack propagation by DBEM in a riveted butt-joint: a simplified bidimensional approach

Authors :: Roberto Guglielmo Citarella
Source :: Frattura ed Integrità Strutturale, Vol 10, Iss 36 (2016), Frattura ed Integrità Strutturale; Vol 10 No 36 (2016): April 2016; Pages 160-167, Frattura ed Integrità Strutturale; V. 10 N. 36 (2016): April 2016; Pages 160-167, Frattura ed Integrità Strutturale, Vol 10, Iss 36, Pp 160-167 (2016)
Publication Year :: 2016
Publisher :: Gruppo Italiano Frattura, 2016.
Abstract: A Multi-Site Damage (MSD) crack growth simulation is presented, carried out by means of Dual Boundary Element Method (DBEM), in a two-dimensional analysis of a cracked butt-joint made of aluminium 2024 T3. An equivalent crack length is proposed for an approximated 2D analysis of a 3D problem where the crack front assumes a part elliptical shape due to secondary bending effects. The assumptions made to perform such simplified bidimensional analyses are validated by comparing numerical results with experimental data, the latter obtained from a fatigue tested riveted butt-joint.

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