part modify point_mass initial_velocity
Allows you to modify initial velocities on an existing point_mass.
Format:
part modify point_mass initial_velocity |
|---|
point_mass_name = | an existing part |
vm = | an existing marker |
vx = | velocity |
no_vx = | true_only |
vy = | velocity |
no_vy = | true_only |
vz = | velocity |
no_vz = | true_only |
Example:
part modify point_mass initial_velocity & |
|---|
point_mass_name = | point_mass__1 & |
vm = | cm & |
vx = | 1.02 & |
vy = | 1.01 & |
vz = | 1.05 |
Description:
Parameter | Value Type | Description |
|---|
point_mass_name | An Existing Point_Mass | Specifies the point_mass to be modified. You use this parameter to identify the existing point_mass to be affected with this command. |
vm | An Existing Marker | |
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 | Specifies to "UNSET" the "vx" velocity initial condition for the specified part, if set. |
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 | Specifies to "UNSET" the "vy" velocity initial condition for the specified part, if set. |
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 | This is not the same as setting the value to zero. A zero velocity is not the same as "no" velocity. Therefore, by setting this parameter to true, there is no longer a velocity initial condition for this element. |
Extended Definition:
1. Translational velocities are specified by parameters VX, VY, and VZ.
Note: | The initial translational velocities are with respect to the ground coordinate axes. The point_mass object does not have any initial rotational velocities. |
2. You may identify a point_mass by typing its name or by picking it from the screen.
If the point_mass is not visible on the screen, you must type the name. You may also find it convenient to type the name even if the point_mass is displayed.
If you created the point_mass by reading an Adams data set or graphics file, the point_mass name is the letters POI followed by the Adams data set point_mass ID number. For example, the name of Adams POINT_MASS/101 is POI101. If you created the point_mass during preprocessing, you will have given it a name at that time.
If a point_mass is available by default, you may identify it by entering only its name. If it is not, you must enter its full name.
To identify a point_mass under another model, for instance, you may need to enter the model name as well. For example, you may specify point_mass 'arm' from model 'robot' by entering ".robot.arm". If you type a "?", Adams View will list the point_masss available by default.
You must separate multiple point_mass names by commas.
If the point_mass is visible in one of your views, you may identify it by picking on any of the graphics associated with it.
You need not separate multiple point_mass picks by commas.
3. Note that the initial translational velocities are with respect to the ground coordinate axes
4. Setting no_vx or no_vy or no_vz is not the same as setting the corresponding velocity value to zero. A zero velocity is not the same as "no" velocity. Therefore, when this parameter is set to true, there is no longer a velocity initial condition for this element.