Creo Simulate > Reference Links > Stress Notes
Stress Notes
If your model is made up of brick, wedge, or tetrahedral elements that have the same isotropic materials, Creo Simulate uses a different calculation that increases the rate of stress convergence, yielding more accurate stress results at a lower polynomial order.
Creo Simulate does not use this algorithm to compute the stresses in models made up of:
non-isotropic materials
more than one material property
non-solid elements (the algorithm is used for solids in the same model)
In reporting stress results, if identical positive and negative stresses are the highest stresses, Creo Simulate reports the positive stress. If the negative value is slightly higher than the positive value, Creo Simulate still reports the positive value.