Naslov
State of Stress Modelling by 2-D Finite Element Analysis of Fracture Toughness Specimens

Autori
Kozak, Dražan ; Blaj, Liliana ; Matejiček, Franjo

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 6th International Conference on Boundary and Finite Element / Dobre, Ionel ; Faur, Nicolae - Temišvar : Editura Politehnica, 2003, 303-312

Skup
6th International Conference on Boundary and Finite Element

Mjesto i datum
Temišvar, Rumunjska, 16.10.2003. - 19.10.2003

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Fracture toughness specimen; Geometry Mismatch; Material Mismatch; Plane stress; Plane strain; Mixed State-of-Stress

Sažetak
This paper should clarify some details related to finite element (FE) analysis of the single edge notch bend (SENB) specimen with X-shaped welded joint as an example. The specimen consists in a complex geometry as well as material mismatch, what makes the FE modelling more difficult. The main advantage of 2-D calculations is the short time needed for the computation of any fracture parameter, but it involves assumption about the state of stress. This depends on the thickness of the specimen, plane section position and loading level. Plane strain state (PE) is very conservative approach valid for thick structures only, while plane stress state (PS) is appropriate in the case of thin specimens. The use of 3-D finite elements is necessary for the specimens with medium thickness or in the case when the symmetry of the specimen according to the thickness is not present.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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