panel set twindow_function z_acc
The Z_ACC function returns the z-component of the difference between the global acceleration vector of the I_MARKER (i1) and the global acceleration vector of the J_MARKER (i2) as computed in the coordinate system of the R_MARKER (i3)
Format:
panel set twindow_function z_acc |
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i_marker_name= | an existing marker |
j_marker_name= | an existing marker |
r_marker_name= | an existing marker |
reference_frame_marker = | an existing marker |
Example:
panel set twindow_function z_acc & |
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panel set twindow_function dm i_marker_name = | marker_71 & |
panel set twindow_function dm j_marker_name = | marker_82 & |
panel set twindow_function x_acc reference_frame_marker = | marker_74 |
Description:
Parameter | Value Type | Description |
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i_marker_name | An Existing Marker | Specifies an existing marker used as the I_MARKER (i1) in the evaluation of the function. |
j_marker_name | An Existing Marker | Specifies an existing marker used as the J_MARKER (i2) in the evaluation of the function. |
r_marker_name | An Existing Marker | Specifies the marker used as the R_MARKER (i3) with respect to which you want adams to evaluate the function. |
reference_frame_marker | An Existing Marker | The reference frame in which the second time derivative of the displacement vector is taken |
Extended Definition:
1. Mathematically, Z_ACC is calculated as follows:
Z_ACC = [ ai1 - ai2] dot_product_with zi3
where ai1 is the acceleration of the I_MARKER (i1) in ground, ai2 is the acceleration of the J_MARKER (i2) in ground, and zi3 is the unit vector along the z-axis of the R_MARKER (i3) .
2. You may identify a marker by typing its name or by picking it from the screen.
If the marker is not visible on the screen, you must type the name. You may also find it convenient to type the name even if the marker is displayed.
If you created the marker by reading an adams data set or graphics file, the marker name is the letters MAR followed by the adams data set marker ID number. The name of adams MARKER/101 is MAR101, for example. If you created the marker during preprocessing, you gave it a name at that time.
If a marker is available by default, you may identify it by entering its name only. If it is not, you must enter its full name. To identify a marker under a different part, for instance, you may need to enter the model and part names as well. For example, you may specify marker 'pivot' from model 'links', part 'lower_arm' by entering ".links.lower_arm.pivot". If you type a "?", Adams View will list the markers available by default.
You must separate multiple marker names by commas.
If the marker is visible in one of your views, you may identify it by picking on it.
3. You may identify a marker by typing its name or by picking it from the screen.
If the marker is not visible on the screen, you must type the name. You may also find it convenient to type the name even if the marker is displayed.
If you created the marker by reading an adams data set or graphics file, the marker name is the letters MAR followed by the adams data set marker ID number. The name of adams MARKER/101 is MAR101, for example. If you created the marker during preprocessing, you gave it a name at that time.
If a marker is available by default, you may identify it by entering its name only. If it is not, you must enter its full name. To identify a marker under a different part, for instance, you may need to enter the model and part names as well. For example, you may specify marker 'pivot' from model 'links', part 'lower_arm' by entering ".links.lower_arm.pivot". If you type a "?", Adams View will list the markers available by default.
4. If you do not supply this parameter, adams will evaluate the function in the ground reference frame.
5. Set l = 0 or omit the argument if you want the time derivatives to be calculated in the ground coordinate system (GCS).
Cautions:
1. You must separate multiple marker names by commas.
Tips:
1. You need not separate multiple marker picks by commas.