Naslov
Experimental and Numerical Analysis of Bending Stress Field in Welded Joints

Autori
Piršić, Tonči

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
15. Danubia-Adria Syimposium on Experimental Methods in Solid Mechanics - Extended Summaries / - Bertinoro, 1998, 175-176

Skup
15. Danubia-Adria Syimposium on Experimental Methods in Solid Mechanics

Mjesto i datum
Bertinoro, Italija, 30.09.1998. - 03.10.1998

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Fatigue; Stress Definition; S-N curves; welded joints

Sažetak
Determination of S-N curves in a case of welded joints is usually connected with the problem of stress definition. Irregular shape of weld and stress concentration disable the appropriate stress measurement, and the Finite Elements Method is faced with high stress gradient in weld toe area that requires mesh refinement and experimental verification. For practical stress definition, three main approaches are proposed: a)Nominal stress concept (stress is defined by simple beam theory (s = F/A or s = Ms/W), without taking into account the stress concentration, b)Hot-Spot Concept, that takes into account only the stress concentration caused by shape of the component, c)Peak Notch Concept, that takes into account the concentration caused by shape of the component as also the stress concentration caused by weld toe shape. The aim of this paper is to compare experimental results and results obtained by FEM, in order to propose the stress definition that is most suitable for practical purpose.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA