graphic_results deformed_mode_shape
Allows you to display the model at maximum deformation from the operating point of the requested natural frequency of the EIGEN_SOLUTION.
Format:
graphic_results deformed_mode_shape |
|---|
eigen_solution_name = | an existing eigen |
view_name = | an existing view |
mode_number = | integer |
frequency = | real |
translation_maximum = | length |
rotation_maximum = | angle |
display_undeformed_shape = | boolean |
color_of_undeformed_shape = | an existing color |
Example:
graphic_results deformed_mode_shape & |
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eigen_solution_name = | eigen__1 & |
mode_number = | 1 & |
translation_maximum = | 0.15 & |
color_of_undeformed_shape = | salmon & |
display_undeformed_shape = | yes & |
contour_plots = | off |
Description:
Parameter | Value Type | Description |
|---|
eigen_solution_name | An Existing Eigen | Specifies an existing eigen_solution.You may identify an eigen_solution by typing its name. |
view_name | An Existing View | Specifies an existing view |
mode_number | Integer | Specifies which mode shape of the EIGEN_SOLUTION is to be used to calculate the deformation of the model. |
frequency | Real | The FREQUENCY parameter is used to determine which mode shape of the EIGEN_SOLUTION is to be used to calculate the deformation of the model. |
translation_maximum | Length | Specifies the maximum amount the parts will translate from their undeformed position. |
rotation_maximum | Angle | Specifies the maximum amount the parts are allowed to rotate from their undeformed position. |
display_undeformed_shape | Boolean | Specifies whether the undeformed model is to be displayed with the deformed shape superimposed on top of it. YES indicates that the undeformed model will be displayed. |
color_of_undeformed_shape | An Existing Color | Specifies the color of the undeformed model. If no color is specified, the undeformed model will be displayed with the same color as the deformed mode. |
Extended Definition:
1. Adams linearizes the model at an operating point you specify and calculates the eigenvalues and eigenvectors. This information is communicated to Adams View in the output files. Adams View then can use this command to display the deformed shape as predicted from the EIGEN_SOLUTION. Because the linear solution eigenvectors are normalized you can specify what the maximum excursion of the deformed shape should be for best visualization. You can specify the mode by entering the MODE_NUMBER, or the FREQUENCY of the mode. If you specify the FREQUENCY, the mode closet to the specified FREQUENCY will be used. If neither the mode parameter or the FREQUENCY parameter is specified, the model is deformed using the first mode. You can display the model in its undeformed state, as well as its deformed state using the DISPLAY_UNDEFORMED_SHAPE parameter. The amount of deformation is controlled with the MAXIMUM_TRANSLATION and MAXIMUM_ROTATION parameters. The deformations are all scaled, so that no part is translated more than the specified MAXIMUM_TRANSLATION, or rotated more than the specified MAXIMUM_ROTATION.
2. If an eigen_solution is available by default, you may identify it by entering only its name. The EIGEN_SOLUTION must be in an existing analysis that is associated to an existing model. Therefore, any reference to the EIGEN_SOLUTION can include the model and analysis name. For example, assume you have read a result file called "SECOND_GEAR.RES", and this result file contains the analysis "SECOND_GEAR". If you wish to refer to the EIGEN_SOLUTION named "EIG1" for the model "TRANSMISSION", enter .TRANSMISSION.SECOND_GEAR.EIG1 (the.TRANSMISSION.SECOND_GEAR. may be omitted if SECOND_GEAR is the current default analysis_name). SECOND_GEAR refers to the analysis name that the result set came from (or is stored under). If you type a "?", Adams View will list the eigen_solutions available by default. The eigen_solution name begins with the letters EIG and ends with the eigen_solution ID number. You must separate multiple eigen_solution names by commas. If the eigen_solution is visible in one of your views, you may identify it by picking on any of the graphics associated with it.
3. Each view created has a name associated with it. The view_name parameter is used to identify a view for a particular operation. In most cases, view_name=all is also a valid entry. The all option indicates "all displayed views". There are eight standard views available when the Adams View is started. These views are: front, top, right, iso, bottom, left, and back. The first four of these standard views are displayed by default when Adams View is started. The user may create new views using the 'VIEW MANAGEMENT CREATE' command, and save/restore their attributes. If the VIEW_NAME parameter is used, the desired view can be identified by picking in the window or entering the name from the keyboard. Typing the name is the only way to identify a stored view that is not displayed.
4. If neither MODE_NUMBER or FREQUENCY is specified the first mode in the EIGEN_SOLUTION is used. To get a list of the available modes and the orresponding frequencies use the LIST_INFO EIGEN command.
5. The mode shape (i.e. eigenvector) of the mode closest to the specified FREQUENCY is used. If neither MODE_NUMBER nor FREQUENCY is specified, the first mode in the EIGEN_SOLUTION is used. To get a list of the available modes and the corresponding frequencies use the LIST_INFO EIGEN command.
6. The reason why the translation_maximum parameter is needed is because the eigenvectors are normalized during the eigen_solution. Therefore, to get a meaningful animation or deformed shape you must sometimes set this value to scale the maximum deformation to get a recognizable shape.
7. The reason why the rotation_maximum parameter is required is because the eigenvectors are normalized during the EIGEN_SOLUTION. Therefore, to get a meaningful animation or deformed shape, you must sometimes set this value to scale the maximum deformation to get a recognizable shape.
Tips:
1. If the MAXIMUM_TRANSLATION parameter is not specified, 20 percent of the model size is used.
2. If the MAXIMUM_ROTATION parameter is not specified, 20 degrees is used.
3. To get a list of the modes and frequencies to select from, use the LIST_INFO EIGEN_VALUE command.
4. The undeformed model is displayed in dashed lines.