0.68a', r = 0.216 kg/m, E = 120 GPa, s_Y = 0.3 GPa, K = 0.10 GPa, H = 0.44 GPa (Poddar et al., 1988). Also, the initial condition j₀ = 0 is considered. The procedure converges with time steps with 1,000 points per period.

In order to illustrate the free response, a system with no external dissipation is considered (c₀ = 0). Figure 2 presents results from simulations in the form of phase portrait. Different initial conditions cause different plastification of the cell and, as a consequence, alter the position of equilibrium points in phase space.

Publication Dates

• Publication in this collection
  24 Sept 2002
• Date of issue
  2001