Better Engineering Through
Multibody Dynamic Simulation

July 2018 | Issue #9

RecurDyn™Solver
Simulation Parameters

RecurDyn lets you adjust various parameters in the simulation dialog box that appears when you click on the Simulation icon in the Model Setting group of the Home tab.

In most cases, you can use the default values but sometimes you may need to change the options.

General Options

The General tab includes the following options (the ones highlighted in yellow are used most frequently):

1. Number of Core
2. Solver Type
3. Linear Solver Type for MBD
4. Expression
5. Initial Velocity
6. Check Redundant

For an explanation of each General Parameter Option for Simulation, please click here.

Advanced Options

Still need more control over the simulation?

The following parameters can be accessed by clicking on the Advanced Options button in the settings window.

1. Check Tolerance
2. Redundant Violation
3. Limit of Angle in each Solving Step (deg)
4. Advanced Angle Measure for 3D Rotation
5. Maximum Convergence Count
6. Message Output Factor
7. Jacobian Evaluation Interval

Click here for an explanation of the Advanced Parameter Options for Simulation.

For more details about all of the above simulation parameters, please refer to the RecurDyn Help manual.

User Tip:

How to use the Plot Template

Click the image below to learn how to create, apply and plot using the Plot Template.

User Tip:

2 things you should know about before co-simulation with ANSYS Simplorer and RecurDyn

ANSYS Simplorer 2018 can be co-simulated with RecurDyn V8R5 or later (or MBD for ANSYS 19 or later) using Functional Mockup Interface (FMI).

To run co-simulation between RecurDyn (or MBD for ANSYS) and ANSYS Simplorer, you should become familiar with the working directory and the sampling time.

Click here to learn more about how to add RecurDyn to the working directory of ANSYS Simplorer and how to set the sampling time correctly.