Analysis Tab

Activate the command Application Menu Options Analysis tab or Tools Options Application Options Analysis tab.

The Analysis tab has the following sections, each of which is detailed below:

Automated Tasks Section:

If the Automate Analysis check box is activated, when you selected the Perform Analysis command, the analysis will be performed and the results will be loaded into the Results environment automatically. If this check box is not activated, you will have to press the Analyze button in the dialog and will have to dismiss the dialog before viewing the results. This check box should be deactivated to submit the analysis to a remote host or to perform a restart analysis.

If the Ask to show mesh results after CAD meshing check box is activated, then you will be prompted whether to view the results of meshing a CAD solid model or not. If the check box is not activated, then you will not be prompted. In either case, the mesh results can be reviewed at any time by using MeshMeshView Mesh Results.

Use the Default Modeling Units button to change the default units that are used a majority of the time when a new model is started. The default units generally apply only to hand-meshed models; the units for most CAD models are determined from the CAD model. (If a different unit system is needed for a particular model, it can be set when the model is created by using the Override Default Units button on the New dialog.) For additional information on the unit systems, refer to the page: Selecting a Units System.

If the Show decoder warnings and continue analysis check box is activated, the analysis will start even when the model contains a geometry warning. When a warning occurs, the appropriate decoder log file (either group.ldx or ds.ldd) will be displayed in a Notepad window. You should check whether the warnings will have an effect on the analysis or not. (Some warnings are not serious enough to affect the results, so proceeding with the analysis can be acceptable.) The status of the check box has no affect if there are no warnings.

If a warning occurs and the Show decoder warnings and continue analysis box is unchecked, you will get a message The model contains errors due to geometry problems. Do you wish to view those errors?. This prompt halts the analysis until you choose Yes or No.

If an error occurs, the analysis will not proceed regardless of whether the Show decoder warnings and continue analysis box is checked or not.

Note: The decoder is the process of converting the lines of the mesh into elements, the FEA objects into actual loads and boundary conditions, and so on. Decoding occurs when doing an AnalysisAnalysisCheck Model and during the Verifying model stage of performing an analysis.

Nonlinear stress and Mechanical Event Simulation can perform calculations based on small displacement theory or large displacement theory. If the option Use large displacement as default for nonlinear analyses on the OptionsAnalysis tab is activated, then the Analysis Type pull-down located on the Element Definition will be set to Large Displacement for new parts whenever the Element Definition is set. (The Element Definition gets set automatically for some element types.) Otherwise, the Analysis Type will be set to Small Displacement whenever the Element Definition is set. Changing the Use large displacement as default for nonlinear analyses option will not change Element Definition Analysis Type that has been chosen for existing parts.

Remote Execution/MPI Cluster Options Section:

The Remote Execution/MPI Cluster Options section can be used to set up remote computers that can be used to perform analyses.

Note: Remote Execution is not applicable to Autodesk Simulation Mechanical 360 and will not appear within the Analysis tab of the Options dialog box for the 360 product.

The following setup is specific to the computer and user. Each computer with Autodesk Simulation software (and ideally each user) must be set up separately to use remote execution.

Press the Configure Remote Execution button to set up computers to use to solve the analysis remotely. The model is sent to the remote computer, and all processing occurs on the remote computer. The host computer is then free (other than monitoring the results). Remote execution is used for submitting the analysis to a single Windows computer, a single Linux computer, or a Linux cluster (distributed computing). There are two items that must be set up under the Configure Remote Execution button to remotely submit an analysis, as described on the following pages:

Remote Exec Programs Tab

Remote Hosts Tab

Press the Configure Windows MPI Clusters to set up the computers used for distributed computing on Windows. The difference from remote execution is that the host computer is used in the analysis, and the other computers in the cluster aid in the analysis. The setup for a Windows cluster is described on the following page, Windows Cluster Setup.