Simplified constraint-modified failure assessment procedure for structural components containing defects

Research output: Contribution to conferencePaperAcademic

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 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.

Conference

Conference3rd International Conference on Structural Integrity and Durability
Abbreviated titleICSID2019
CountryCroatia
CityDubrovnik
Period4/06/197/06/19
Internet address

Fingerprint

Plastics
Defects
Brittle fracture
Fracture mechanics
Ligaments
Load limits
Cracks
Finite element method

Bibliographical note

ISSN number 2584-3982

Cite this

Leonetti, D., Snijder, B., & Maljaars, J. (2019). Simplified constraint-modified failure assessment procedure for structural components containing defects. Paper presented at 3rd International Conference on Structural Integrity and Durability, Dubrovnik, Croatia.
Leonetti, Davide ; Snijder, Bert ; Maljaars, Johan. / Simplified constraint-modified failure assessment procedure for structural components containing defects. Paper presented at 3rd International Conference on Structural Integrity and Durability, Dubrovnik, Croatia.6 p.
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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 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.",
author = "Davide Leonetti and Bert Snijder and Johan Maljaars",
note = "ISSN number 2584-3982; 3rd International Conference on Structural Integrity and Durability : Fatigue, Fracture and Failure, ICSID2019 ; Conference date: 04-06-2019 Through 07-06-2019",
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Leonetti, D, Snijder, B & Maljaars, J 2019, 'Simplified constraint-modified failure assessment procedure for structural components containing defects' Paper presented at 3rd International Conference on Structural Integrity and Durability, Dubrovnik, Croatia, 4/06/19 - 7/06/19, .

Simplified constraint-modified failure assessment procedure for structural components containing defects. / Leonetti, Davide; Snijder, Bert; Maljaars, Johan.

2019. Paper presented at 3rd International Conference on Structural Integrity and Durability, Dubrovnik, Croatia.

Research output: Contribution to conferencePaperAcademic

TY - CONF

T1 - Simplified constraint-modified failure assessment procedure for structural components containing defects

AU - Leonetti,Davide

AU - Snijder,Bert

AU - Maljaars,Johan

N1 - ISSN number 2584-3982

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

M3 - Paper

ER -

Leonetti D, Snijder B, Maljaars J. Simplified constraint-modified failure assessment procedure for structural components containing defects. 2019. Paper presented at 3rd International Conference on Structural Integrity and Durability, Dubrovnik, Croatia.