Creo Simulate > Reference Links > Polynomial Order
  
Polynomial Order
The values that you specify for minimum and maximum polynomial orders determine the polynomial order that Creo Simulate uses when analyzing your model.
For each value, you can enter a number from 1 through 9. The default minimum is 1 while the default maximum is 6.
The engine begins with all element edges at the minimum polynomial order and repeats its calculations at increasingly higher polynomial orders for each edge until it reaches one of the following values:
the maximum polynomial order that you specify
the convergence percentage. This happens when the results of the last two calculations are within the value you specified for Percent Convergence.