Efficient Modification of Interaction Definitions in SOLIDWORKS Simulation

By Suman Sudhakaren on

Interactions between surfaces of components in a product assembly can be easily captured in SOLIDWORKS Simulation. For realistic simulation, it is important to precisely capture the behavior of these interactions. SOLIDWORKS Simulation supports various types of interaction behaviors such as Bonded, Contact (previously termed as No-penetration) with or without friction, Shrinkfit for pressfit condition, free and virtual wall.

For large assembly with many interactions defined, users can easily visualize all interaction types existing in the simulation study by invoking Interaction Viewer via right mouse click on the Connection folder.

simulation design

This becomes more important when troubleshooting a large problematic simulation study. Interaction viewer color codes the faces that have interactions defined and this is helpful when simulation assemblies. The table below lists the colors for corresponding type of interaction.

color code

CAD drawing with purple and red

For realistic simulation of an assembly model, it is imperative to define different types of local interactions. This is because some interfaces might have friction or sliding behavior while other interfaces might be welded together or just pressfit. Organizing and editing a number of interactions can become cumbersome for larger SOLIDWORKS simulation models. While we can organize the interactions types by creating a folder within the default connections folder in simulation study and grouping them by their behavior, editing each interaction, one at a time can take a very long time.

An easier way to edit multiple interactions at once is to control select the required interactions together and right mouse click to select Edit Definition. This opens Edit Multiple Local Interaction property manager. If multiple contact sets of the same type are selected, their common properties can be easily edited at once. If multiple contact sets of different types are selected, they can be modified to a common interaction type. By default it would modify all selected ones to the first type of interaction defined in the interaction list.

Virtual wall type of interaction is not yet available for this quick editing option. If mixed interaction sets (for example, a virtual wall and a contact) that are not eligible for a conversion to a common interaction type is selected, the software prompts for a corrective action.

If interested in learning more about Interactions and how it works in SOLIDWORKS Simulation, reach out to us at [email protected]