Abstract
A numerical methodology for analyzing failure processes in structures in the framework of relations of damaged medium mechanics is considered; the methodology makes it possible to analyze the behavior of structures, accounting for characteristic failure processes at both the initial stage of nucleation and the final stage of crack propagation. The results of numerically studying laws of nucleation and propagation of cracks in a cylindrical specimen with a concentrator, loaded in axial tension under high-temperature creep in the assumption of a viscous character of failure of the specimen, are given, as obtained using the present methodology. The results of the analyses are shown to depend on the parameters of the FE-discretization of the specimen in the region of the crack propagation trajectory. Nucleation time, stable propagation time and crack propagation rate are correlated with the value of the stress concentration coefficient in the notch and the intensity of tensile stresses. Keywords: creep, stress concentrator, damage accumulation, fracture, crack, finite element method.
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.
