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Finite element analysis of sheet forming processes
Author(s) -
Rebelo N.,
Nagtegaal J. C.,
Hibbitt H. D.
Publication year - 1990
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620300824
Subject(s) - finite element method , representation (politics) , macro , deformation (meteorology) , kinematics , sheet metal , shell (structure) , surface (topology) , plane stress , structural engineering , mechanical engineering , computer science , engineering , engineering drawing , geometry , mathematics , materials science , classical mechanics , physics , composite material , politics , political science , law , programming language
The paper discusses several aspects of the simulation of sheet forming processes using finite elements. We begin with a brief description of the class of problems treated, emphasizing the main deformation modes present. The choice of finite element type for modelling the sheet—continuum, shell, membrane, or special purpose—is discussed in realation to the geometrical simplifications made with respect to deformation. We pay particular attention to the kinematic implementation of membrane (plane stress) deformation. Modelling problems associated with the interaction between the sheet and dies are then discussed: in particular, problems related to rigid surface representation and friction. A simplified model of drawbeads is described, which allows for macro‐representation of this die detail. Some practical application examples are included to illustrate these points. The paper concludes with a general discussion of developments which we believe to be desirable for this type of simulation.