Abstract
The normal and triaxial stresses on uncracked ligament for different specimens were analyzed by large deformation plane strain finite element analysis (FEM) at their fracture loads, and the critical characteristic parameters ( J, Q, k) of the stress field established in Part I [Fashang Ma and Zhen-Bang Kuang, Engng Fracture Mech. 48, 727–737 (1994)] were determined by fitting. Using several continuum damage mechanics (CDM) models and the present stress field, the conditions of the initiation of elastic-plastic fracture growth for different specimens were discussed in detail, and it was verified by experimental data that the critical conditions suggested in this paper are independent of specimen geometry and of the ratios of crack depth a to specimen width w when an appropriate microscopic model for fracture initiation is adopted. When characteristic parameters of the stress field k = 1 and Q = 0, the present conditions will reduce to the well-known elastic-plastic single parameter fracture criteria.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
