LOAD

LOAD, node_type, node_nr, dir_label, dcval, acval, sigtype, sigpar1, sigpar2;

Defines nodal loads and DOF-constraints for the mechanical domain

Nodal loads are forces and moments acting on the rigid body center points, at master nodes and at spring connecting points.
Nodal DOF-constraints are given displacements and rotations at the rigid body center points, at master nodes and at spring connecting points.
The command supports constant (DC), harmonic (AC) and transient load functions of type sine, step, puls and ramp.

Input Data⚓︎

Parameter	Description
`node_type`	Available node types (enter a two-character string) → `rb` → Rigid body center point (center of gravity) → `mn` → Master node (MAST) → `sl` → Spring location point (SLOC)
`node_nr`	Number of the node associated with above node type → ≥ 1 [integer]
`dir_label`	Available load types and directions (enter a two-character string) - Forces or moments: → `fx` or `mx` → `fy` or `my` → `fz` or `mz` - Displacements or rotations (in radian): → `ux` or `rx` → `uy` or `ry` → `uz` or `rz`
`dcval`	DC-value of the load, used for all types of simulations → Real value → `del` - Delete specified load
`acval`	AC-value of the load, used in harmonic and transient simulations → Real value
`sigtype`	Available transient load types (enter a 4-character string) → `sine` - Sinusoidal function → `step` - Step function → `puls` - Periodic pulse function → `ramp` - Ramp function → If empty - Only `dcval` for transient simulations
`sigpar1`	`sigtype` = `sine`: → `sigpar1` - Frequency > 0 `sigtype` = `step`: → `sigpar1` - Step time ≥ 0 `sigtype` = `puls`: → `sigpar1` - Period time > 0 `sigtype` = `ramp`: → `sigpar1` - Ramp time till `acval` is reached The high-values for all load types are taken from `acval`
`sigpar2`	`sigtype` = `sine`: → `sigpar2` - Phase (default = 0) `sigtype` = `step` or `ramp`: → `sigpar2` unused `sigtype` = `puls`: → `sigpar2` - High-pulse time (default = 0.5)