Two basic procedures are currently available to determine the critical condition of a flawed structure, at which unstable crack extension may occur. The first method based on elastic-plastic fracture mechanics is accurate but requires a time consuming elastic-plastic finite element analysis. The second method estimates the critical condition with an interaction diagram between linear elastic fracture mechanics describing brittle fracture, and a limit load analysis of the net section, i.e. the un-flawed ligament. This method is simpler to use but has a lower level of accuracy. The current paper provides a third option, consisting of a constraint-modified failure assessment procedure. It uses a linear elastic solution for evaluating brittle fracture and a simplified elastic-plastic analysis for evaluating plastic collapse. This third option provides good agreement with three considered tests.
|Status||Gepubliceerd - 2019|
|Evenement||3rd International Conference on Structural Integrity and Durability: Fatigue, Fracture and Failure - Dubrovnik, Kroatië|
Duur: 4 jun 2019 → 7 jun 2019
|Congres||3rd International Conference on Structural Integrity and Durability|
|Periode||4/06/19 → 7/06/19|
Bibliografische notaISSN number 2584-3982
Leonetti, D., Snijder, B., & Maljaars, J. (2019). Simplified constraint-modified failure assessment procedure for structural components containing defects. Paper gepresenteerd op 3rd International Conference on Structural Integrity and Durability, Dubrovnik, Kroatië.