Analysis of the Void Volume Fraction for S235JR Steel at Failure for Low Initial Stress Triaxiality | Zendy

P. Kossakowski | Zendy

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Analysis of the Void Volume Fraction for S235JR Steel at Failure for Low Initial Stress Triaxiality

Author(s) -

P. Kossakowski

Publication year - 2018

Publication title -

archives of civil engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.208

H-Index - 15

eISSN - 2300-3103

pISSN - 1230-2945

DOI - 10.2478/ace-2018-0007

Subject(s) - void (composites) , materials science , volume fraction , structural engineering , composite material , engineering

This paper deals with problems of failure mechanisms of S235JR structural steel. One of the fundamental parameters of the Gurson-Tvergaard-Needleman damage mechanics-based material model is considered in order to describe the behaviour of the material at the plastic range. The analysis was performed on the void volume fraction f F determined at failure of S235JR steel. The case of low initial stress triaxiality η = 1/3 was taken into consideration. Different from the most popular methods such as curve-fitting, the experimental method based on the digital image analysis of the fracture surface of S235JR steel is proposed in order to determine the critical parameter f F .

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