Issue:

I was running an analysis and this error came up: "Error in solving the linear system of equations. Number of degrees of freedom in LHS and RHS aren't equal"

Applies to:

• Simulation
• Topology Optimization

Cause:

The cause for this issue is typically due to an error in a boundary condition or a constraint block.

Solution:

• • Take a look at the tolerances for each boundary condition and ensure that they all make sense and work. 
  • Make sure the constraint and restraint blocks are used correctly in Topology Optimizations

More on this topic:

• How to run a topology optimization
• Understanding the Topology Optimization settings
• How to run a thermal analysis using a thermal bonded contact