Abstract
Cohesive zone elements for the modeling of fracture generally use fixed cohesive properties to describe the process of material separation. Results of crack growth simulations by the use of the modified Gurson relation demonstrate that in case of ductile fracture the separation parameters cohesive strength and characteristic length, however, do not remain constant throughout a crack growth analysis and their values are not known a priori This finally leads to the need of further developments in cohesive zone models where both cohesive zone parameters are adjusted by triaxiality. In the present paper such a model is presented, its material parameters are derived and an application to the simulation of crack growth in a ductile metal is demonstrated. This application shows that the triaxiality dependent cohesive zone model can in detail reflect the changes in lengthscale of separation and cohesive strength as the crack propagates through the ductile metal.
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.
