Naslov
Elastic-plastic analysis of internaly pressurized torispherical shells

Autori
Sorić, Jurica ; Zahlten, W.

Izvornik
Thin-Walled Structures (0263-8231) 22 (1995), 4; 217-239

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
elastic-plastic material; von Mises yield criterion; isotropic strain hardening; layered finite element; geometrically nonlinear elastic-plastic analysis; thin shell structures; meridional bending moments; hoop stress

Sažetak
The constitutive equation for an elastic-plastic material model was derived using the von Mises yield criterion and assuming isotropic strain hardening. A layered finite element permitting geometrically linear and geometrically nonlinear elastic-plastic analysis of thin shell structures is presented. The effect of linear strain hardening on the size of plastic regions and the distribution of internal forces in an internally pressurized torispherical shell was analyzed. At sufficiently high pressures a significant difference in the distribution of internal forces was observed between elastic, perfectly plastic and strain hardening material. The effect of the size of plastic regions on the difference in the magnitude of internal forces obtained by geometrically linear and geometrically nonlinear computations of the torispherical shell was studied. An increase in the size of the plastic region was found to produce greater differences in the computation of meridional bending moments than in the computation of hoop stress resultants.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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