Arcan-Richard Specimens: Is There a Pure Shear Mode?

0354599 - ÚFM 2011 RIV CH eng J - Článek v odborném periodiku
Seitl, Stanislav - Hutař, Pavel - Fernández-Canteli, A.
Arcan-Richard Specimens: Is There a Pure Shear Mode?
Key Engineering Materials. Roč. 452-453, - (2011), s. 345-348. ISSN 1013-9826
Grant CEP: GA ČR GA101/09/0867
Výzkumný záměr: CEZ:AV0Z20410507
Klíčová slova: Stress intensity factor, T-stress, mixed-mode, Arcan-Richard specimen
Kód oboru RIV: JL - Únava materiálu a lomová mechanika

Traditionally, applications of fracture mechanics have been mainly focused on cracks growing under the opening or mode I mechanism (three point bend specimen, middle tension specimen, crack tension specimen, etc.). When investigating instability under mixed mode loading conditions, three different alternatives can be envisaged consisting of: a) machining a hole in standard specimens, b) creating a crack oriented under a given angle, and c) using non-standard Arcan-Richard specimens. In this work, finite element calculations are performed to analyze the initial values of the fracture parameters in Arcan-Richard specimens. First, the influence of the normal stress mode to the shear stress mode ratio is analyzed, then the effect of the constraint level is discussed, and finally, the initial propagation angle of the daughter crack is derived.
Trvalý link: http://hdl.handle.net/11104/0193568