constraint modify primitive_joint parallel_axis
Allows modification of an existing parallel axis joint primitive.
Format:
constraint modify primitive_joint parallel_axis |
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jprim_name = | an existing primitive joint name |
new_jprim_name = | a new primitive joint name |
adams_id = | integer |
comments = | string |
i_marker_name = | an existing marker |
j_marker_name = | an existing marker |
Example:
constraint modify primitive_joint parallel_axis & |
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jprim_name = | JPRIM__1 & |
new_jprim_name = | JPRIM__2 & |
adams_id = | 2 & |
comments = | "comment string" & |
i_marker_name = | marker_1 & |
j_marker_name = | marker_2 |
Description:
Parameter | Value Type | Description |
|---|
jprim_name | An Existing Primitive Joint | Specifies the jprim to modify. |
new_jprim_name | A New Primitive Joint | Specifies the name of the new jprim. |
adams_id | Adams_id | Specifies an integer used to identify this element in the Adams data file. |
comments | String | Specifies comments for the object being created or modified. |
i_marker_name | An Existing Marker | Specifies a marker on the first of two parts connected by this joint. |
j_marker_name | An Existing Marker | Specifies a marker on the second of two parts connected by this joint. |
Extended Definition:
1. A parallel joint primitive is a four-degree-of-freedom joint primitive that allows both translational and rotational motion of one part with respect to another. For a parallel axis primitive, Adams imposes two rotational constraints so that the z-axis of the I marker stays parallel to the z-axis of the J marker. This primitive permits relative rotation about the common z-axis of I and J and permits all relative displacements.
2. You may identify a jprim by typing its name or by picking it from the screen. If the jprim is not visible on the screen, you must type the name. You may also find it convenient to type the name even if the jprim is displayed. If you created the jprim by reading an Adams data set or graphics file, the jprim name is the letters JPR followed by the Adams data set jprim ID number. The name of Adams JPRIM/101 is JPR101, for example. If you created the jprim during preprocessing, you gave it a name at that time. If a jprim 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 jprim under an analysis, for instance, you may need to enter the analysis name as well. For example, you may specify jprim 101 from the analysis named test by entering ".test.jpr101". You must separate multiple jprim names by commas. If the jprim 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 jprim picks by commas.
3. Normally, entity names like the jprim_name are composed of alphabetic, numeric, or '_' (underscore) characters, and start with an alphabetic or '_' character. They may be any length. For more information, see
Using Extended Names. By enclosing the name in double quotes, you may use other printable characters, or start the name with a numeral. If a name contains characters, or starts with a numeral, you must always quote the name when entering it. Note that you can specify the parentage of an entity (for example, what part "owns" a marker or a geometry element) when you CREATE it by changing the name. If you enter just the entity name, then the default parent will be assigned by Adams View. If you type in the full name, then you may over ride the default parent. In most cases, when creating an entity, Adams View will provide a default name. The default name that Adams View provides will specify the parentage that it has assumed. You may, or course, delete this name and use your own. The form of a full name is:
"...._NAME.GRAND_PARENT_NAME.PARENT_NAME.ENTITY_NAME"
The number of levels used varies from case to case and the parentage must exist before an entity can be assigned to it.
4. When you use the FILE ADAMS_DATA_SET WRITE command, Adams View writes an Adams data file for your model. Adams requires that each modeling element be identified by a unique integer identifier. If you use this parameter to specify a non-zero identifier, Adams View will use it in the corresponding statement in the Adams data file. You may also enter zero as an identifier, either explicitly or by default. The next time you write an Adams file, Adams View will replace the zero with a unique, internally-generated identifier. Adams View will permanently store this identifier with the element just as if you had entered it yourself. Normally, you would let all identifiers default to zero, and Adams View would generate the identifiers for you. You are never required to enter a non-zero identifier. You only need to specify it if, for some reason, you wish to control the Adams file output.
5. When an Adams Solver data file (.adm) is read into Adams View, all comments associated with a statement (from the end of the previous statement through the end of the current statement) are stored with the object. Comments in the data file can be associated with model. These comments must follow the title statement and be followed by the comment 'END OF MODEL COMMENTS'. This string must be uppercase. When an Adams Solver data file is written, the comments for an object are written before the statement corresponding to the object.
Tips:
1. If you type a "?", Adams View will list the jprims available by default.
2. You use the jprim_name parameter to identify the existing jprim to affect with this command.
3. You may use the new_jprim_name later to refer to the jprim. Adams View will not allow you to have two jprims with the same full name, so you must provide a unique name.
4. Adams View connects one part at the I marker to the other at the J marker.