Nonlinear supports in FEA: Gap Elements (NX Nastran) [Q&A #2]

By |September 12th, 2017|FEA: Intermediate, • Boundary Conditions, • Contact, FEA Topics:, Q&A, FEMAP|

Recently I got a great question from Ardalan (thanks for writing mate!) about defining nonlinear supports in FEA. I think he does a better job of defining the problem: First how to constraint an entity with in tolerance rather than completely fixing it? i.e. how to define a certain range of motion for an entity [...]

Changing active forces for enforced deformations and vice versa

By |May 23rd, 2017|FEA: Basics, FEA: Intermediate, • Boundary Conditions, FEA Topics:|

I have seen many mistakes where people wrongly changed enforced deformations with active forces. In some cases, this is a simple task, which gives beginners the feeling that they can always do it easily. This, in turn, leads to various mistakes in analysis. I think it is worth discussing this, to point out common mistakes [...]

Finite Element Analysis workflow

By |May 2nd, 2017|FEA: Basics, • Linear Analysis, • Meshing, • Boundary Conditions, • Post Processing, FEA Topics:, RFEM, FEMAP|

When I first started working with Finite Element Analysis (FEA) I had a huge problem in understanding what to do. I had a basic engineering knowledge but I simply did not understand what was the order of the steps. Suddenly the software had many "modules" and each was screaming at me that some data is [...]

Boundary conditions influence on static design – case study

By |March 20th, 2017|FEA: Intermediate, • Boundary Conditions, FEA Topics:, Case Studies, FEMAP|

Each day we do simplifications to boundary conditions just to reduce time spent on analysis. We are all aware, that structured support is crucial, but the actual influence of the proper boundary conditions is rarely examined. See yourself how drastic influence BC have on your design! I will discuss this using a project I just [...]