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Festigkeitsanalyse
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Strength analysis
The focus of the department is located in the development and experimental validation of calculation procedures for advanced 3D reinforced laminates and textile fibre composites, which is an important task within the design and verification process of mechanically loaded structures. Especially textile composites usually consisting of a complex fibre microstructure require special calculation procedures taking also material nonlinearities into account. As textile composites are appropriate for thick walled structures, an advanced 3D finite element has been developed which considers material inhomogeneities, anisotropy and the degradation of the mechanical properties resulting from loading history. Further a new physically based failure criterion has been developed to support the design process based on calculations, as it can also be applied to thin walled structures in combinations of an extended calculation of the 3D stress tensor. To extend the potential of fibre reinforced materials, design tools are developed to calculate the optimal orientation of the fibres (TFP) and the subsequent CAD data for an industrial manufacturing process. Within all projects we closely collaborate with other DLR teams, universities and industrial partners.
Our business activities
Finite element development
Failure criterion for 3D reinforced fibre composits
3D stress tensor calculation for thin walled shell structures
„Tailored Fibre Placement“ (TFP) optimization
Current projects:
TRAVEST
Failure criterion for 3D reinforced fibre composites
Finite element development
Development of a finite 3D-element for threedimensional deformation- and stress analysis of thickwalled textile composites with material nonlinearity
TFP/TACO
Related Articles
Efficient Composite Volume Element
Development of a physically based failure criterion for 3D fibre reinforced composite materials
Efficient linear transverse shear and normal stress analysis of arbitrarily curved fibre reinforced shell structures
Tailored Fibre Placement
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