Finite elements of composite materials - CrossLink
CrossLink GmbH
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  • FEM Simulation

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Finite elements calculations

Mechanical simulation

Simulation is used to simplify the fit-for-purpose dimensioning of your component and to provide your design engineer with the assurance, that the product will be able to support planned loads. Established failure hypotheses for isotropic materials do not apply to fiber-reinforced materials. Extensions for those composite materials lead to the quadratic Hill criterion and the Tsai-Wu hypothesis. Employing the finite elements method (FEM) we can calculate basic cases, such as bending, torsion or tension, as well as detailed structure analyses. The latter permit precise and reliable statements regarding potential deformations, voltage distribution or thermal stresses.

Mechanical simulation of carbon fiber, carbon laminates

Mechanical dimensioning

You can profit from our experienced engineers, as it is, especially in the field of fiber-reinforced materials, crucial to have reliable material data. You can also take advantage from our extensive material database. We will gladly further inform you on your questions on the subject of FEM for composites, especially in the following topics:
  micromechanics of fiber-reinforced materials
  anisotropic elasticity
  integral material equations for laminates
  equivalent bonding stiffness of sandwich cross sections
  FEM for laminates
  Kirchhoff and Reissner-Mindlin-theories of thin plates
  Tsai-Wu failure criterion

Vibrational simulation

In addition to voltage distribution or deformations, optimization for high-performance components requires the analysis of vibrational behavior. Employing the FEM method, natural frequencies and excitation in all their interactions can be predicted precisely.

Natural frequency simulation of CFRP

Stiffness and natural frequency

Flow simulation

CFD-simulation permits the testing of geometries with regard to their air and water resistance. Optimization is then possible because of the design flexibility of fiber-reinforced composites. The following models are used:
  k-ε-turbulence modelling
  non-linear k-ε-turbulence modelling
  Spalart-Allmaras turbulence modelling

FEM simulation carbon composites

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