Running a simulation produces the analysis results for all the combinations of the defined variables. Before you run a simulation, we recommend that you complete the following tasks:
- Confirm that all components use correctly defined materials with sufficient definition for simulation.
- Loads are assigned.
- Constraints are applied.
- Assign releases or rigid links, as needed.
- Exclude components that are not affected by the forces and deformation from the simulation:
- Open the assembly browser under the simulation node (Simulation browser view).
- On the context menu, click Suppress.
To run a simulation, click the Simulate command 
in the Solve panel. Alternatively, in the Frame Analysis browser right-click the Simulation node and select Simulate. The progress bar displays showing the status of the simulation.
To cancel the simulation in process, click Cancel or the ESC key.
When you run the simulation and there are some problems in your frame model there is a high probability that the results are invalid. A warning icon 
displays before the Results browser node. Expand the Status folder in the browser to see the list of errors and warning messages. We recommend resolving any warnings that are displayed to get correct analysis results.
When producing simulations, you can modify parameters: change beam materials or properties, add loads, constraints, define rigid links, or assign releases. The Results become out-of-date. A browser decoration icon 
appears next to the Results browser node. This signifies that the results are out of sync with the current input. You update results by doing the following:
- Click the Simulate command in the Solve panel.
- Right-click the Simulation node in the browser and click Simulate.