Assembling Mechanical Models

You can assemble multiple meshed models from the Workbench Project tab using the Mechanical Model component system, analysis type systems, and/or the External Model component system. That is, you can create multiple meshed model systems that link to one analysis environment that includes all of the individual model files.

Examples of this feature are illustrated below. Model cells are linked (Model-to-Model linking). You must first mesh all of the upstream systems in order to open the models in Mechanical.

Assembling Mechanical Model Systems

Assembling Mechanical Model Systems and Analysis Systems

Assembling Mechanical Model Systems and External Model Systems

Linked Model Common Properties

Similar to importing mesh-based .cdb files using the External Model component system or defining Mesh-to-Mesh Connections, Model-to-Model linking provides certain Project Schematic properties for the downstream Model cell prior to import; including: geometry length units, the number of copies of the source mesh to transform, and Rigid Transformation properties based on source locations.

Mechanical Model Systems and Analysis Systems

Upstream Mechanical Model systems and analysis systems define the engineering data, geometry, and meshes for the assembled or downstream Mechanical Model system or the analysis system. The downstream analysis system can modify any existing specifications to the models once opened in Mechanical. For example, any suppressed bodies coming in from upstream systems can be unsuppressed and remeshed in the downstream environment. Once the models are imported into Mechanical, all application features are available.

Limitations and Restrictions for Model Assembly

Please note the following requirements for Model Systems:

You may wish to refer to the Mechanical Model section of the Workbench Help for additional information about this Workbench component system.

External Model Component System

When an External Model component system is incorporated into model-to-model assembly, certain restrictions arise. Any suppressed bodies from other upstream systems can be unsuppressed in the downstream environment provided they were meshed prior to being suppressed in the upstream system. However, suppressed parts from other upstream systems can never be unsuppressed in the downstream environment when using the External Model component system. These restrictions also apply when using the options Unsuppress All Bodies and/or Invert Suppressed Body Set.

See the Mesh-Based Geometry section of the Mechanical Help for additional specification requirements for working with .cdb files as well as the External Model component system in the Workbench Help.

Associativity of Properties

During model assembly, the properties assigned to bodies in upstream systems are automatically transferred to the downstream systems. For multi-body parts, although the properties assigned to each body are transferred, the properties assigned to the parts themselves are not transferred. During refresh operations, when upstream data is modified and the downstream system is refreshed, the properties assigned to bodies in the downstream system are automatically updated, with the following exceptions:

These properties do not update if you modify them in the downstream system.

Note:  It is recommended that you define all mesh controls and settings in your upstream systems.

Mesh settings on upstream systems take priority over any downstream mesh settings. That is, any changes to an upstream system will overwrite your mesh setting changes on your downstream system once updated. As a result, you could see differences between the assembled mesh and the settings of the downstream meshed model. Therefore, to have your downstream mesh to be updated per the mesh setting changes, you need to re-mesh your downstream model once it has been refreshed.

Mesh transfer will fail on assembled models if mesh controls are present in the downstream system. As needed, you can define mesh controls on the downstream system once you have assembled the model.

Release 15.0 - © SAS IP, Inc. All rights reserved.