Solid to SPH Option (Sol2SPH)
The solid to SPH option (Sol2SPH) enables you to turn a solid element into particles in order to increase the time step/robustness of a Lagrangian calculation, while not significantly changing the physics.
It is compatible with the solid property options /PROP/TYPE14 (SOLID) and
/PROP/TYPE6 (SOL_ORTH) and is limited to:
- Isolid = 1, 2 or 24
- Iframe = 1 or 2
- 8-node bricks (/BRICK including degenerated) and 4-node tetras (TETRA4), but not 10-node tetras.
The input
is:
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/PROP/SOLID/3
Prop example
# Isolid Ismstr Icpre Itetra10 Inpts Itetra4 Iframe dn
1 2 0 0 0 0 1 0
# q_a q_b h LAMBDA_V MU_V
0 0 0 0 0
# dt_min istrain IHKT
0 0 0
# Ndir SPH_part
1 10
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
Where,
- SPH_part
- Part number defining the SPH properties
- Ndir
- Number of particles created for each direction, the maximum value is 9
|
The particles are created according to a cubic net.
The transition from solid elements to SPH particles can be triggered by contact or by brick deletion.