3D FEM study on an austenitic stainless steel for verification of the Engineering Treatment Model (ETM)

3D constraint effects of finite thick specimens on the CTOD-#delta#_5 driving force are studied by FEM on stationary cracks. The deviation margins between 3D and 2D conditions will be presented. For most cases, i.e. where the ligament is 2 times larger or more than the thickness, the difference between inside and outside is weakly exhibited that #delta#_5 can be approximated to be constant versus the thickness. A promising idea of simplification the analytical #delta#_5 driving force determination for 3D with the ETM construction will be presented. An example of the ETM demonstrates that the characteristics of the #delta#_5 driving force curves can be properly described by the current ETM construction based on 2D plane stress condition. (orig.)First published in: K.H. Schwalbe, C. Berger (eds.): Proceedings of the 10. European conference on fracture - ECF 10: Structural integrity - experiments -models - applications, Vol. 1. Engineering Materials Advisory Services (EMAS) Ltd., Warley (GB)Available from TIB Hannover: RA 3251(95/E/19) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman