Title
Simplified contraint-modified failure assessment procedure for structral components containing defects
Author
Leonetti, D.
Snijder, H.H.
Maljaars, J.
Publication year
2019
Abstract
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 unflawed 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.
Subject
Buildings and Infrastructures
2015 Urbanisation
Failure Assessment Diagram
Engineering Critical Assessment
Constraint
SIF
T-Stress
Plastic collapse
Neuber
Triaxiality
To reference this document use:
http://resolver.tudelft.nl/uuid:620061f0-075f-4e27-ad85-2109d3a32e54
TNO identifier
875334
Source
3rd International Conference on Structural Integrity and Durability, June 4 – 7, 2019, Dubrovnik, 1-6
Document type
conference paper