gs.materials.MPM.Sand#

class genesis.engine.materials.MPM.sand.Sand(E=1000000.0, nu=0.2, rho=1000.0, lam=None, mu=None, sampler='random', friction_angle=45)[source]#

Bases: Base

The sand material class for MPM.

Parameters:

  • E (float, optional) – Young’s modulus. Default is 1e6.

  • nu (float, optional) – Poisson ratio. Default is 0.2.

  • rho (float, optional) – Density (kg/m^3). Default is 1000.

  • lam (float, optional) – The first Lame’s parameter. Default is None, computed by E and nu.

  • mu (float, optional) – The second Lame’s parameter. Default is None, computed by E and nu.

  • sampler (str, optional) – Particle sampler (‘pbs’, ‘regular’, ‘random’). Note that ‘pbs’ is only supported on Linux for now. Defaults to ‘random’.

  • friction_angle (float, optional) – Friction angle in degrees, used to compute internal pressure-dependent plasticity. Default is 45.

sand_projection(S, Jp)[source]#
update_F_S_Jp(J, F_tmp, U, S, V, Jp)[source]#
update_stress(U, S, V, F_tmp, F_new, J, Jp, actu, m_dir)[source]#