Mechanical APDL Basic Analysis Guide - Ansys
Mechanical APDL Basic Analysis Guide - Ansys Mechanical APDL Basic Analysis Guide - Ansys
Chapter 9: Selecting and Components Figure 9.3 Layered Shell (SHELL281) with Nodes Located at Bottom Surface Ply 3 Ply 2 Ply 1 Nodes located on bottom surface with KEYOPT(11) = 1 9.3. Grouping Geometry Items into Components and Assemblies Sometimes it is convenient to group portions of the model and give them recognizable names, such as WHEEL2, FIN7, IRONCORE, STATOR, ROTOR, etc. You can then conveniently select all items belonging to, for example, WHEEL2, and work with them: apply boundary conditions, mesh them with nodes and elements, produce graphics displays, and so forth. The groupings may be components or assemblies. A component consists of one type of entity: nodes, elements, keypoints, lines, areas, or volumes. The Component Manager (Utility Menu> Select> Component Manager) provides convenient access to your component operations. The Component Manager provides a coordinated and integrated interface to the capabilities of the following commands: CM CMGRP CMPLOT CMDELE CMLIST CMSEL CMEDIT CMMOD You can access each command's capability either through the Component Manager, or through individual GUI paths, as noted. The following sections describe the individual component commands and the function you can perform with them. See the appropriate command documentation for specific capabilities and limitations. Note Using the Component Manager toolbar buttons (except Select Component/Assembly and Unselect Component/Assembly will perform the specified operation on the highlighted component(s), but the select status of the entities in the database will not be affected. 9.3.1. Creating Components Use the CM command (Utility Menu> Select> Comp/Assembly> Create Component) to define a component. For example, you can select all elements that constitute the rotor portion of a motor model and group them into a component: ESEL,,MAT,,2 ! Select rotor elements (material 2) CM,ROTOR,ELEM ! Define component ROTOR using all selected elements 214 Release 13.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of ANSYS, Inc. and its subsidiaries and affiliates.
The Command Reference describes the ESEL and CM commands in more detail. An assembly may consist of any number of components and other assemblies. Use the CMGRP command (Utility Menu> Select> Comp/Assembly> Create Assembly) to define an assembly. For example, you can group the components ROTOR and WINDINGS (both of which must have been previously defined) into an assembly ROTORASM: NSEL,... ! Select appropriate nodes and ESLN ! elements that constitute the windings CM,WINDINGS,ELEM ! Define component WINDINGS CMGRP,ROTORASM,WINDINGS,ROTOR ! Define the assembly ROTORASM The Command Reference describes the NSEL, ESLN, CM, and CMGRP commands in more detail. 9.3.2. Nesting Assemblies You can also nest assemblies up to five levels deep. For example, you can build an assembly named MOTOR from other assemblies and components as shown in the schematic below. Figure 9.4 Nested Assembly Schematic STATOR PERMMAG ROTOR WINDINGS STATASM ROTORASM AIRGAP MOTOR Assuming that the assembly ROTORASM and components STATOR, PERMMAG, and AIRGAP have been defined, the commands to define the assembly MOTOR would look like this: CMGRP,STATASM,STATOR,PERMMAG CMGRP,MOTOR,STATASM,ROTORASM,AIRGAP See the Command Reference for more information about the CMGRP command. Release 13.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of ANSYS, Inc. and its subsidiaries and affiliates. 9.3.2. Nesting Assemblies 215
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The Command Reference describes the ESEL and CM commands in more detail.<br />
An assembly may consist of any number of components and other assemblies. Use the CMGRP command<br />
(Utility Menu> Select> Comp/Assembly> Create Assembly) to define an assembly. For example, you can<br />
group the components ROTOR and WINDINGS (both of which must have been previously defined) into an<br />
assembly ROTORASM:<br />
NSEL,... ! Select appropriate nodes and<br />
ESLN ! elements that constitute the windings<br />
CM,WINDINGS,ELEM ! Define component WINDINGS<br />
CMGRP,ROTORASM,WINDINGS,ROTOR ! Define the assembly ROTORASM<br />
The Command Reference describes the NSEL, ESLN, CM, and CMGRP commands in more detail.<br />
9.3.2. Nesting Assemblies<br />
You can also nest assemblies up to five levels deep. For example, you can build an assembly named MOTOR<br />
from other assemblies and components as shown in the schematic below.<br />
Figure 9.4 Nested Assembly Schematic<br />
STATOR<br />
PERMMAG<br />
ROTOR<br />
WINDINGS<br />
STATASM<br />
ROTORASM<br />
AIRGAP<br />
MOTOR<br />
Assuming that the assembly ROTORASM and components STATOR, PERMMAG, and AIRGAP have been<br />
defined, the commands to define the assembly MOTOR would look like this:<br />
CMGRP,STATASM,STATOR,PERMMAG<br />
CMGRP,MOTOR,STATASM,ROTORASM,AIRGAP<br />
See the Command Reference for more information about the CMGRP command.<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 />
9.3.2. Nesting Assemblies<br />
215
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