[Photo: Material test]

Material modeling and qualification

FEM calculations with an implicit time integration allow the analysis of stiffness and eigenmodes of vehicle bodies including different concepts for structural optimization, whereas the explicit time integration is used to evaluate temporarily dynamic loading conditions, for example in crash situations.

All these processes however are based on validated modeling methods representing materials and joining processes.

Thanks to our testing and modeling infrastructure, we can create validated material cards and models for joining processes. We choose the appropriate simulations and modeling approach according to loading conditions or use case. Analyzing the boundary conditions of the system helps us to define suitable material and interface models and element types.

Therefore, it is necessary to specify the model's properties, eg.:

  • Fibre-reinforced plastic
    • Orthotropy
    • Failure modes (tension, compression and shear conditions, delamination etc.)
    • Structure resolution (crushing)
    • Post-peak behavior
  • Metals
    • Elastic or elasto-plastic behavior
    • Anisotropy
    • Triaxiality
  • Joining processes
    • Shear- and tension-failure
    • Mixed modes and interaction
    • Heat influence on thermal joining processes

The materials or joining processes are characterized according to standards and guidelines e.g. with coupon samples.

For the validation of models we then conduct more complex trials, e.g. for generic components or profiles, and therefore use either our servo hydraulic test center for quasi-static or our drop tower test bench for highly dynamic testing.

[Foto: Material-Test]

[Foto: Material-Test-Simulation]

Testing infrastructure

Ihr Ansprechpartner

Your contact

[Foto: Kristian Seidel]

Bereichsleiter Karosserie
Dipl.-Ing. Kristian Seidel

Department Manager Body
Dipl.-Ing. Kristian Seidel

This email address is being protected from spambots. You need JavaScript enabled to view it.
Telefon: +49 241 8861 122

This email address is being protected from spambots. You need JavaScript enabled to view it.
Phone: +49 241 8861 122

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