Veryst has world leading capabilities in advanced finite element analysis of complex materials. Modern Finite Element Analysis (FEA) is a computational tool allowing prediction of the mechanical response of materials used in medical devices and components. We routinely perform FE simulations of highly nonlinear engineering- and biomaterials (polymers, metals, tissue). We can model complex phenomena such as anisotropy, viscoplasticity, temperature-dependence, including considerations of damage accumulation and failure. We have developed a library of user-material subroutines that can be used as “plug-ins” in commercial FE programs to correctly model nonlinear behavior. These material subroutines provide the ability to perform unique and very accurate FE simulations that would otherwise not be possible using the built-in features of available FE codes.
Nonlinear Polymer Stress/Strain Behavior
Accurate simulations require: (1) experimental testing to extract the true material response in different environments; (2) a suitable constitutive model that captures the experimentally observed non-linearities of the material; and (3) the geometry, loads, and boundary conditions in a finite element software code. Of these three requirements, the selection, use, and calibration of a non-linear constitutive model is typically the most challenging. Veryst Engineering has unique and world-leading expertise particularly in that area.
