Create New Simulation and Edit Simulation Properties - Simulation Type tab

Simulation properties are unique for each simulation. The properties are populated with values from the Stress Analysis Settings and representation information from the assembly. Then, based on the simulation needs, you specify the properties. The dialog box contains general controls and tabs for specific controls.

Simulation Type properties provide you the option to select either Static or Modal analysis and properties associated to those types. If the simulation requires something other than the default, modify the settings as needed.

Access:

Presented as the Create New Simulation dialog box when Create Simulation command is used. Presented as the Edit Simulation Properties dialog box when you right-click the Simulation browser node and click Edit Simulation Properties. The Simulation Properties dialog box displays the Simulation Type tab by default.

The following controls are common to the dialog box, regardless of the selected tab:

Name		A user assigned name that defaults to Simulation, followed by a colon and a numeric indicator indexed from 1 to ‘n’. Each new simulation is named with the next higher value. The name is used for all user-visible references to the simulation.
Design Objective		Specifies the objective of the simulation. Select from either of the following:
	Single Point	Use when you want to evaluate one set of geometry. New simulations default to this type.
	Parametric Dimension	Use when you want to optimize or change feature geometry through the use of design parameters. The simulation reports results for the various parameter values you specify.
Reset		Replaces the current settings with those found in the Stress Analysis Settings. Note: The new settings may not reflect the values that were set when the simulation was newly created. You can Cancel the dialog box without clicking OK or use Undo to reverse the action after using OK. Does not affect the following: Design Objective Simulation Type Contact Settings
OK		Accepts the setting modifications and applies them to the selected simulation.
Cancel		Cancel the current dialog box session. Modifications made during the session that have not been applied are discarded.
Apply		Sets or revises the simulation settings based on current dialog box values.

Simulation Type tab

There are two simulation types available: Static and Modal.

Static Analysis		Evaluate the model without motion to determine stresses and displacement.
	Detect and Eliminate Rigid Body Modes	Removes the rigid body modes in problems where not enough constraints are defined, but they have a balanced load with a valid elasticity solution.
	Separate Stress Across Contact Surfaces	Select to have explicit representation of discontinuous stress across the contact interface in the FEA formulation. Some components of the stresses can be discontinuous due to different materials of the contacting parts.
	Motion Load Analysis	Select to transfer motion loads of a single part from Dynamic Simulation. This selection enables Part and Time Step controls. Part: lists available parts whose motion loads were exported Time Step: lists available time steps associated with the part selection. All other bodies are excluded and the associated Dynamic Simulation loads are imported.
Modal Analysis		Determine the natural frequencies of vibration for the model.
	Number of Modes	Enter the number of resonant frequencies to find, for Structural Frequency. Frequencies corresponding to rigid body movements are included. For example, in a free vibration analysis the first six modes occur at 0Hz, corresponding to the six rigid body movements.
	Frequency Range	Enter the range of frequency for the desired modal frequencies, when using this option. We recommend that you indicate both the range and the number of modes within the range. If the number of modes is not known, Stress Analysis calculates up to 100 modes within the range.
	Compute Preloaded Modes	Select to compute stress on a model and then compute modes for the prestressed condition.
	Enhanced Accuracy	This option increases the accuracy of the calculated frequency values by an order of magnitude (10).
Contacts
	Tolerance	Specify the maximum distance between faces or edges to consider in automatic detection. Faces or edges falling outside the distance are eliminated from participating in automatic contacts. You can enter the value in a different linear unit than the default document value.
	Type	From the list of contact types, select the type to generate automatically when the simulation builds contacts. You can edit individual contacts and change the type later.
	Normal Stiffness	Specifies the equivalent normal stiffness value. Applicable to Spring contact only.
	Tangential Stiffness	Specifies the equivalent tangential stiffness value. Applicable to Spring contact only. Note: Normal and tangential directionality is based on the best approximation between the two faces that follow each other in a parallel way. Examples are parallel planes, concentric cylinders, and so on. Otherwise it can be ambiguous.
	Shell Connector Tolerance	Specify the maximum ratio between shell gap and shell thickness used to bridge gaps within a midsurface. These gaps are connected using connectors. A connector is a system generated contact that helps to consider the midsurface as physically connected even though it has gaps.