Abstract
Direct modelling technique is used to study crack growth in compression from an inclined shear crack and a pore based on a finite difference code FLAC. In this modelling the microstructure is represented by finite elements. Fractures are treated as sequences of elements with largely reduced or zero moduli. Crack propagation is simulated by the removal of the element at which the failure criterion is satisfied by setting it to the null element. We used a natural crack propagation criterion: the crack propagates when the major principal stress at the element at the crack tip exceeds the local tensile strength. The numerical results are compared with analytical LEFM solutions in which the influence of free surface on crack propagation is accounted for by the method of dipole asymptotics.
Sign-in/Register to access full text options 
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.
