Font Size: 

It has been generally accepted that superimposed hydrostatic pressure increases
the ductility of metals due to the fact that a superimposed pressure delays or
completely eliminates the nucleation, growth and coalescence of micro-voids or
micro-cracks. However, to the best of our knowledge, numerical simulation of
uniaxial tension under superimposed hydrostatic pressure has not been reported.
In this paper, finite element analysis is carried out to study effects of
superimposed hydrostatic pressure on fracture in sheet metals under in-plane
plane strain tension. All the simulations are based on the Gurson damage model.
Numerical results are found to be in good agreement with experimental
observations.