Naslov
Some Critical Remarks on the Dugdale Strip Yield Model for the Crack Tip Plasticity

Autori
Pustaić, Dragan ; Štok, Boris

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

Izvornik
ECF 12 Fracture from Defects / Brown, M.W. ; de los Rios, E.R. ; Miller, K.J. - Sheffield : Engineering Materials Advisory Services Ltd., 1998, 889-894

Skup
The 12th Bienniel Conference on Fracture ECF 12 Fracture from Defects

Mjesto i datum
Sheffield, Ujedinjeno Kraljevstvo, 14.09.1998. - 18.09.1998

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Crack Tip Plastcity; Elastic-Plastic Fracture Mechanics Parameters; Dugdale Strip Yield Model

Sažetak
The mechanical response of an infinite thin plate with a central straight crack is considered in this paper. On the plate boundaries at infinity the biaxial normal in-plane tractions are applied, while the crack surface is loading free. It is assumed that the magnitude of the applied loads will cause the evolution of the plastic deformations in the neighbourhood of the crack tips. The plasticity aspect of fatigue crack growth will be of interest to this article. The generalised Dugdale-Barenblatt strip yield model is utilised for a description of the plastification process. In this paper two yield criteria are considered, the Tresca and the Mises, respectively. The analysis of the investigated mechanical response, which includes stresses, displacements, stress intensity factors, plastic zone magnitude, crack tip opening displacement, residual stress distribution etc., is carried out analytically using methods of the theory of analytical functions of a complex variable.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA