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Ductile Crack Initiation of Structural Steel under Monotonic Loading

Jia, Liang-Jiu / Ge, Hanbin

Abstract In this chapter, mesoscopic ductile fracture models based on the void growth theory are briefly reviewed. A void growth fracture model in incremental form is derived based on the Rice–Tracey theory and the Miner’s rule, where the emphasis is the crack initiation rule and crack propagation is assumed to occur once a crack initiates. A method to calibrate the fracture model parameter using tension coupon test results is described. The ductile fracture model mainly for crack initiation under monotonic loading is validated by comparison with several experimental results of notched tension coupon test results made of different structural steels, where different stress triaxialities are produced through different configurations of the notches. Comparison results indicate that the void growth ductile fracture model can well predict crack initiation of structural steels under high triaxialities.

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Ductile Crack Initiation of Structural Steel under Monotonic Loading

Jia, Liang-Jiu / Ge, Hanbin

Abstract In this chapter, mesoscopic ductile fracture models based on the void growth theory are briefly reviewed. A void growth fracture model in incremental form is derived based on the Rice–Tracey theory and the Miner’s rule, where the emphasis is the crack initiation rule and crack propagation is assumed to occur once a crack initiates. A method to calibrate the fracture model parameter using tension coupon test results is described. The ductile fracture model mainly for crack initiation under monotonic loading is validated by comparison with several experimental results of notched tension coupon test results made of different structural steels, where different stress triaxialities are produced through different configurations of the notches. Comparison results indicate that the void growth ductile fracture model can well predict crack initiation of structural steels under high triaxialities.

Ductile Crack Initiation of Structural Steel under Monotonic Loading

Jia, Liang-Jiu / Ge, Hanbin

Abstract In this chapter, mesoscopic ductile fracture models based on the void growth theory are briefly reviewed. A void growth fracture model in incremental form is derived based on the Rice–Tracey theory and the Miner’s rule, where the emphasis is the crack initiation rule and crack propagation is assumed to occur once a crack initiates. A method to calibrate the fracture model parameter using tension coupon test results is described. The ductile fracture model mainly for crack initiation under monotonic loading is validated by comparison with several experimental results of notched tension coupon test results made of different structural steels, where different stress triaxialities are produced through different configurations of the notches. Comparison results indicate that the void growth ductile fracture model can well predict crack initiation of structural steels under high triaxialities.

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Title:

Ductile Crack Initiation of Structural Steel under Monotonic Loading

Contributors:

Jia, Liang-Jiu (author) / Ge, Hanbin (author)

Published in:

Ultra-low-Cycle Fatigue Failure of Metal Structures under Strong Earthquakes ; 53-69

Springer Tracts in Civil Engineering

Publication date:

2018-11-03

Size:

17 pages

ISBN:

978-981-13-2660-8 , 978-981-13-2661-5

ISSN:

2366-2603 , 2366-259X

DOI:

https://doi.org/10.1007/978-981-13-2661-5_4

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Void growth , Ductile fracture , Necking , True stress–true strain , Structural steel Engineering , Structural Mechanics , Building Materials , Building Construction and Design , Fire Science, Hazard Control, Building Safety , Geotechnical Engineering & Applied Earth Sciences

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