Linear vs. Nonlinear Simulation: What’s the Difference?

If you’re unsure, start with a linear analysis. If the results seem unrealistic (ex., too much displacement, high stress in flexible materials, or parts “passing through” each other), it’s a sign to go nonlinear.

Pro Tip: Use Both

Many engineers start with a linear simulation for quick insights, then refine the analysis with nonlinear when:

• Material properties become a factor
• There’s evidence of large displacement
• Assembly behaviour involves contact or separation

This approach balances speed and realism, especially during iterative design.

Choosing between linear and nonlinear simulation in SOLIDWORKS isn’t just about the software – it’s about understanding how your product behaves in the real world.

If your design is simple, stiff, and elastic? Linear is probably all you need.

If you’re dealing with complex interactions, flexible materials, or extreme conditions? Nonlinear is the way to go.

Need help deciding which method is right for your specific project? Reach out to our team of experts and they’d be happy to help.