rblock fix
command
Syntax
- rblock fix keyword ... <range>
Primary keywords:
spin spin-x spin-y spin-z velocity velocity-x velocity-y velocity-z
Fix the specified rigid block velocities. As a result, rigid block motion is constant in the specified directions.
- spin
The angular velocity is fixed.
- spin-x (3D ONLY)
Fix the \(x\)-component of the angular velocity.
- spin-y (3D ONLY)
Fix the \(y\)-component of the angular velocity.
- spin-z (3D ONLY)
Fix the \(z\)-component of the angular velocity.
- velocity
The translational velocity is fixed.
- velocity-x
Fix the \(x\)-component of the translational velocity.
- velocity-y
Fix the \(y\)-component of the translational velocity.
- velocity-z (3D ONLY)
Fix the \(z\)-component of the translational velocity.
Usage Examples
Fix the \(y\)-component of velocity and all components of angular velocity of the rigid blocks in the group top-platen
.
rblock fix velocity-y spin range group 'top-platen'
from “specimen.dat” in Simple Rigid Block Bonded-Block Modeling (BBM)
Fix all components of velocity angular velocity for all blocks except the block with ID = 6.
rblock fix velocity spin range id 6 not
from “make_system.dat” in Sliding Wedge
Fix all components of velocity and angular velocity for all blocks whose centroids lie between z = -2 and z = 0.
rblock fix vel spin range position-z -2 0
from “buttress.dat” in Flying Buttress
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