When you assemble files from upstream sources (Mechanical Model, External Data, and/or analysis systems), the Mesh object presents an additional category called Model Assembly that includes a property called . The options for this property are (default) and . It should be a rare requirement, but you can change the setting of this property (to ) if all of the upstream systems are either Mechanical Model sources or analysis system sources. When set to , all of the Mesh object's default properties display and although they are not in sync with the upstream systems, you can edit the assembly's mesh and regenerate the mesh.
Setting the Read Only property to following changes to the model that cause the mesh to become out-of-date, you can clear and resume your original mesh using the option.
An associated process for the resume operation on is that during the attachment process the application verifies that the mesh is available on all unsuppressed bodies and that the Stiffness Behavior settings for all of the assembled bodies match the stiffness behavior from the source file. If this verification is unsuccessful, then the attachment process will not complete and the application generates error messages that list the bodies in error.
In addition, when the Read Only property is set to , the use of the following features is not supported:
Mesh Controls (Sizing, etc.)
Mesh Connections: when at least one upstream system is ACP or External Model.
Node Merge: when at least one upstream ACP system has an Interface Layer defined.
Mesh Numbering: when at least one upstream system is ACP.
Fracture Meshing: when at least one upstream system is ACP or External Model.
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.
The application suppresses Mesh controls if they are present in the assembled system during the Mesh transfer process. You may unsuppress the mesh controls and remesh if the assembled system allows for it (assembled system does not have a connection from External Model or ACP).