Boundary element analysis of CT specimens with straight and curved crack fronts

✍ Scribed by M. Laura Luchi; Sergio Rizzuti

• Book ID: 104619713
• Publisher: Springer Netherlands
• Year: 1987
• Tongue: English
• Weight: 940 KB
• Volume: 34
• Category: Article
• ISSN: 1573-2673
• DOI: 10.1007/bf00042122

✦ Synopsis

Stress intensity factors (SIFs) are computed by the boundary element method for standard compact tension specimens. Traction singular elements are employed along the crack front which enable SIFs not only to be extrapolated from crack opening displacements but also to be directly obtained as problem unknowns. Both straight and curved crack fronts are analyzed: the latter are taken to be in the form of circular arcs with curvature radii ranging from 3.145 to 0.707 the specimen thickness. The influence of Poisson's ratio on the stress intensity factor distribution is also investigated.