Strain gradient plasticity
Influence of dissipative lengthscale on stabilityClassic rate-independent associative plastic material becomes unstable within the softening regime, the deformation localizes in a zero-thickness region and any numerical analysis produces results dependent on the meshing procedure.
Considering strain gradient effects in plastic materials, we have shown that:
Higher is the dissipative lengthscale introduced, larger is the delay in occuring of instability and wider is the zone where the non-uniform deformation spreads.
If you're having trouble playing videos on YouTube, click here to watch it.
If you're having trouble playing videos on YouTube, click here to watch it.
Related papers:
- Dal Corso, F. and Willis, J.R. (2011).
Stability of strain gradient plastic materials.
Journal of the Mechanics and Physics of Solids, 59, 1251-1267.
Back to main page