part create point_mass initial_velocity
Allows you to create initial velocities on an existing point mass.
Translational velocities are specified by parameters VX, VY, and VZ.
Note that the initial translational velocities are with respect to the ground coordinate axes.
Format:
part create point_mass initial_velocity |
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point_mass_name= | existing point_mass |
vm= | existing marker |
vx= | velocity |
no_vx= | true_only |
vy= | velocity |
no_vy= | true_only |
vz= | velocity |
no_vz= | true_only |
Example:
part create point_mass initial_velocity & |
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point_mass_name = | point_mass__2 & |
vm = | int_node_12001 & |
vx = | 200 & |
no_vy = | true & |
no_vz = | true |
This will apply a translational velocity of 200 at the center-of-mass marker along the x-axis of the ground reference frame.
Description:
Parameter | Value Type | Description |
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Point_mass_name | Existing point_mass | Specifies the name of an existing point mass. |
vm | Existing marker | Specifies a marker about whose axes the translational velocity vector components will be specified. |
vx | Velocity | Specifies the initial translational velocity of the center-of-mass marker along the x-axis of the ground reference frame. |
no_vx | True_only | Unsets the vx velocity initial condition for the specified part (true) so it no longer has a velocity initial condition. |
vy | Velocity | Specifies the initial translational velocity of the center-of-mass marker along the y-axis of the ground reference frame. |
no_vy | True_only | Unsets the vy velocity initial condition for the specified part (true) so it no longer has a velocity initial condition. |
vz | Velocity | Specifies the initial translational velocity of the center-of-mass marker along the z-axis of the ground reference frame. |
no_vz | True_only | Unsets the vz velocity initial condition for the specified part (true) so it no longer has a velocity initial condition. |
Extended Definition:
1. You can specify initial velocities for parts. AdamsAdams View uses the initial velocity during the initial conditions simulation, which it runs before it runs a simulation of your model.
You can specify translational and angular velocities for rigid bodies and only translational velocity for point masses.
■Translational velocity defines the time rate of change of a part’s center of mass with respect to ground or another marker in your model. You can specify translational velocity for each vector component of the marker.
■Angular velocity defines the time rate of change of a part’s rotational position with respect to the CM marker of the part or another marker in your model. You can specify angular velocity for each vector component of the marker.
If you specify initial velocities, Adams View uses them as the initial velocity of the part during assemble model operations, regardless of any other forces acting on the part. You can also leave some or all of the velocities unset. Leaving a velocity unset lets Adams View calculate the velocity of the part during an assemble operation depending on the other forces and constraints acting on the part. Note that it is not the same as setting the initial velocity to zero. Setting an initial velocity to zero means that the part will not be moving in the specified direction when the simulation starts, regardless of any forces and constraints acting upon it.
Tips:
1. Remember, leaving a velocity unset lets Adams View calculate the velocity of the part during an initial conditions simulation, depending on the other forces and constraints acting on the part. It is not the same as setting the initial velocity to zero.
2. Note that the initial translational velocities are with respect to the ground coordinate axes.