How Refined Should a Mesh be? Where are the Limits?Antoine Poussier, Vice President - Global Partner Programs
As a new element of Simulate to Innovate, we will be offering guest posts written by thought leaders from within our partner companies of the Altair Partner Alliance. As a first edition, we have a post from J. Marczyk, founder and CTO of Ontonix, who discusses the limitations of refinement when creating FE mesh in design concepts:
As compute power increases, it has become easier to generate FE meshes quickly and efficiently. This allows analysts to reduce the discretisation error. However, many people overlook the fact that models are already full of sometimes quite drastic simplifications of physical phenomena. For example, the equation of the Euler-Bernoulli beam – the simplest of structural elements , is the result of at least the following assumptions:
- The material is homogeneous.
- The beam is slender.
- The constraints are perfect
- The material is linear and elastic.
- The effects of shear are neglected.
- Rotational inertia effects are neglected.
- The displacements are small.
- Sections remain plane. Read More