Influence of initial porosity on strength properties of S235JR steel at low stress triaxiality

• Autorzy: Kossakowski P. G.
• Języki publikacji: EN

Abstrakty

EN

The paper discusses the influence of the initial parameters on the strength parameters of S235JR steel at low stress triaxiality. The analysis was performed using the Gurson-Tvergaard-Needleman (GTN) material model, which takes into consideration the material structure. The initial material porosity was defined as the void volume fraction f0. The fully dense material without pores was assumed and the typical and maximum values of porosity were considered for S235JR steel in order to analyse the porosity effect. The strength analysis of S235JR steel was performed basing on the force-elongation curves obtained experimentally and during numerical simulations. Taking into consideration the results obtained, the average values of the initial void volume fraction fo = 0.001 for S235JR steel is recommended to use in a common engineering calculations for elements operating at low stress triaxiality. In order to obtain more conservative results, the maximum values of fo = 0.0024 may be used.

Słowa kluczowe

EN

S235JR steel; Gurson-Tvergaard-Needleman material model; BTN; porosity; numerical simulation

PL

stal S235JR; model materiałowy Gurson-Tvergaard-Needleman; BTN; porowatość; symulacja numeryczna

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2012
• Tom: Vol. 58, nr 3
• Strony: 293--308
• Opis fizyczny: Bibliogr. 24 poz., il.

Twórcy

autor

Kossakowski P. G.

• Kielce University of Technology, Faculty of Civil and Environmental Engineering, Al. Tysiąclecia Państwa Polskiego 7, 25-314 Kielce,

Bibliografia

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