Solver Selection – Does It Matter?

EmailFacebookLinkedInTwitterShare

Choices. Everyone wants choices. We make simple choices like ‘paper or plastic’. Or one of my favorites, ‘domestic or import’! In SOLIDWORKS we can be faced with decisions like ‘assembly or multi-body’! While these are simple examples, what do you decide when you’re faced with the decision ‘FFEPlus or Direct Sparse’? Which solver should you select? While this question does not have an easy answer, there are some guidelines you can follow to help in your selection. Understanding the two […]

Read More

Nodal versus Elemental Stresses

EmailFacebookLinkedInTwitterShare

A common question that comes up in my training classes is : What should be examined – Nodal Stresses or Elemental Stresses? When running a COSMOS analysis, the solver internally evaluates the stresses for each element in the model at specific locations inside the element (also called as Gaussian or Quadrature points). These points form the basis of numerical integration schemes used in Finite Element codes. The number of points selected is determined by the type and quality of the […]

Read More

Tackling the Large Displacement Error Message

EmailFacebookLinkedInTwitterShare

What does one do when he/she sees the error message shown in the picture: This error message is probably one of the most common ones that a COSMOS user encounters in analysis. The first reaction that one gets is that this is impossible. You know for a fact that the load cannot possibly cause large deflections. Statistically speaking, the confidence levels on FEA drops drastically at this point, and I would not blame you for it right now (later, maybe)!! […]

Read More