Banas, D.
Gordon, J.L.
rep-no: B-T-3251
1999 ASME Pressure Vessels and Piping Conference, Boston, MA (US), 08/01/1999--08/05/1999
1999-02-01
United States. Department of Energy.
Metals
Elasticity
Newman, J.B.
8 p.
Bettis Atomic Power Laboratory
Jones, D.P.
An elastic-perfectly plastic flow model for finite element analysis of perforated materials
Plates
osti: 755313
36 Materials Science
Plasticity
Hutula, D.N.
Orifices
ark: ark:/67531/metadc704651
This paper describes the formulation of an elastic-perfectly plastic flow theory applicable to equivalent solid [EQS] modeling of perforated materials. An equilateral triangular array of circular penetrations is considered. The usual assumptions regarding geometry and loading conditions applicable to the development of elastic constants for EQS modeling of perforated plates are considered to apply here. An elastic-perfectly plastic [EPP] EQS model is developed for a collapse surface that includes fourth-order stress terms. The fourth order yield function has been shown to be appropriate for plates with a triangular array of circular holes. A complete flow model is formulated using the consistent tangent modulus approach based on the fourth order yield function.
grantno: AC11-98PN38206
Flow Models