Mechanical APDL Basic Analysis Guide - Ansys
Mechanical APDL Basic Analysis Guide - Ansys Mechanical APDL Basic Analysis Guide - Ansys
Chapter 9: Selecting and Components Reselect Selects (again) from the selected subset. Also Select Adds a different subset to the current subset. Unselect Subtracts a portion of the current subset. Select All Restores the full set. Select None Deactivates the full set (opposite of Select All). Invert Switches between the active and inactive portions of the set. Reselect Current Subset Also Select Current Select Unselect Current Subset Select All Current Subset Select None Current Subset Invert Current Subset Reselected Subset Additionally Selected Subset Unselected Subset Full Set Inactive Subset Active Subset Inactive Subset These functions are available for all entities (nodes, elements, keypoints, lines, areas, and volumes) in the Utility Menu of the Graphical User Interface as well as by command. For additional information on picking, see "Graphical Picking" in the Operations Guide. 9.1.1. Selecting Entities Using Commands Table 9.2: Select Commands (p. 211) shows a summary of commands available to select subsets of entities. Notice the "crossover" commands: commands that allow you to select one entity based on another entity. For example, you can select all keypoints attached to the current subset of lines. Here is a typical sequence of select commands: LSEL,S,LOC,Y,2,6 ! Select lines that have center locations between Y=2 and Y=6 LSEL,A,LOC,Y,9,10 ! Add lines with center locations between Y=9 and Y=10 NSLL,S,1 ! Select all nodes on the selected lines ESLN ! Select all elements attached to selected nodes See the LSEL, NSLL, and ESLN command descriptions in the Command Reference for further information. 210 Release 13.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of ANSYS, Inc. and its subsidiaries and affiliates.
Note Crossover commands for selecting finite element model entities (nodes or elements) from solid model entities (keypoints, areas, etc.) are valid only if the finite element entities were generated by a meshing operation on a solid model that contains the associated solid-model entities. Table 9.2 Select Commands Entity Nodes Elements Keypoints Hard Points Lines Areas Volumes Components Basic Commands NSEL ESEL KSEL KSEL, ASEL, LSEL LSEL ASEL VSEL CMSEL Crossover Command(s) NSLE, NSLK, NSLL, NSLA, NSLV ESLN, ESLL, ESLA, ESLV KSLN, KSLL None LSLA, LSLK ASLL, ASLV VSLA None 9.1.2. Selecting Entities Using the GUI The GUI path equivalent to issuing most of the commands listed in Table 9.2: Select Commands (p. 211) is Utility Menu> Select> Entities. The GUI option displays the Select Entities dialog box, from which you can choose the type of entities you want to select and the criteria by which you will select them. For example, you can choose Elements and By Num/Pick to select elements by number or by picking. Press the Help button from within the Select Entities dialog box for detailed information about selecting via the GUI. The help is context-sensitive and reflects any choices you have made in the Select Entities dialog box. Plotting One Entity Type and Selecting Another It is sometimes useful to plot one entity type and select another. For example, in a model with hidden faces, you may want to obtain a wire-frame view. You can do so by plotting the lines via Utility Menu> Plot> Lines (LPLOT), and then selecting areas using graphical picking via Utility Menu> Select> Entities> Areas> By Num/Pick (ASEL,S,PICK). This method is available by default. Combining Entities Into Components or Assemblies You will likely want to combine entities into components or assemblies wherever possible for clarity or ease of reference. The following GUI paths provide selection options for defined components or assemblies: GUI: Utility Menu> Select> Comp/Assembly> Select All Utility Menu> Select> Comp/Assembly> Select Comp/Assembly Utility Menu> Select> Comp/Assembly> Pick Comp/Assembly Utility Menu> Select> Comp/Assembly> Select None Release 13.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of ANSYS, Inc. and its subsidiaries and affiliates. 9.1.2. Selecting Entities Using the GUI 211
- Page 175 and 176: To retrieve path information from a
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Note<br />
Crossover commands for selecting finite element model entities (nodes or elements) from solid<br />
model entities (keypoints, areas, etc.) are valid only if the finite element entities were generated<br />
by a meshing operation on a solid model that contains the associated solid-model entities.<br />
Table 9.2 Select Commands<br />
Entity<br />
Nodes<br />
Elements<br />
Keypoints<br />
Hard Points<br />
Lines<br />
Areas<br />
Volumes<br />
Components<br />
<strong>Basic</strong> Commands<br />
NSEL<br />
ESEL<br />
KSEL<br />
KSEL, ASEL, LSEL<br />
LSEL<br />
ASEL<br />
VSEL<br />
CMSEL<br />
Crossover Command(s)<br />
NSLE, NSLK, NSLL, NSLA, NSLV<br />
ESLN, ESLL, ESLA, ESLV<br />
KSLN, KSLL<br />
None<br />
LSLA, LSLK<br />
ASLL, ASLV<br />
VSLA<br />
None<br />
9.1.2. Selecting Entities Using the GUI<br />
The GUI path equivalent to issuing most of the commands listed in Table 9.2: Select Commands (p. 211) is<br />
Utility Menu> Select> Entities.<br />
The GUI option displays the Select Entities dialog box, from which you can choose the type of entities you<br />
want to select and the criteria by which you will select them. For example, you can choose Elements and<br />
By Num/Pick to select elements by number or by picking.<br />
Press the Help button from within the Select Entities dialog box for detailed information about selecting<br />
via the GUI. The help is context-sensitive and reflects any choices you have made in the Select Entities<br />
dialog box.<br />
Plotting One Entity Type and Selecting Another<br />
It is sometimes useful to plot one entity type and select another. For example, in a model with hidden faces,<br />
you may want to obtain a wire-frame view. You can do so by plotting the lines via Utility Menu> Plot><br />
Lines (LPLOT), and then selecting areas using graphical picking via Utility Menu> Select> Entities> Areas><br />
By Num/Pick (ASEL,S,PICK). This method is available by default.<br />
Combining Entities Into Components or Assemblies<br />
You will likely want to combine entities into components or assemblies wherever possible for clarity or ease<br />
of reference. The following GUI paths provide selection options for defined components or assemblies:<br />
GUI:<br />
Utility Menu> Select> Comp/Assembly> Select All<br />
Utility Menu> Select> Comp/Assembly> Select Comp/Assembly<br />
Utility Menu> Select> Comp/Assembly> Pick Comp/Assembly<br />
Utility Menu> Select> Comp/Assembly> Select None<br />
Release 13.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information<br />
of ANSYS, Inc. and its subsidiaries and affiliates.<br />
9.1.2. Selecting Entities Using the GUI<br />
211
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