A plasticity model for simulation of industrial powder compaction

1998 ◽  
Vol 53 (3) ◽  
pp. 34
2008 ◽  
Vol 45 (7-8) ◽  
pp. 2056-2076 ◽  
Author(s):  
H.W. Chandler ◽  
C.M. Sands ◽  
J.H. Song ◽  
P.J. Withers ◽  
S.A. McDonald

Author(s):  
Ayoub Ayadi ◽  
Kamel Meftah ◽  
Lakhdar Sedira ◽  
Hossam Djahara

Abstract In this paper, the earlier formulation of the eight-node hexahedral SFR8 element is extended in order to analyze material nonlinearities. This element stems from the so-called Space Fiber Rotation (SFR) concept which considers virtual rotations of a nodal fiber within the element that enhances the displacement vector approximation. The resulting mathematical model of the proposed SFR8 element and the classical associative plasticity model are implemented into a Fortran calculation code to account for small strain elastoplastic problems. The performance of this element is assessed by means of a set of nonlinear benchmark problems in which the development of the plastic zone has been investigated. The accuracy of the obtained results is principally evaluated with some reference solutions.


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