DamageDict

In DamageDict, a simulation tool is being developed, that predicts the failure behavior of fiber-plastic composites at the micro- and mesoscale level.

For the best possible utilisation of the lightweight design potential, failure behavior and strength limits must be determined as precisely as possible. However, it is critical to select suitable strength and failure criteria, since these criteria are sometimes too imprecise or do not reflect the different failure modes of the composites. Puck’s effective plane criterion allows the failure  of FRP structures to be predicted accurately, but the experimental effort in advance is enormous. In order to reduce the effort, it is promising to partially substitute the experiments by simulative approaches. For this purpose, the material behavior is determined by means of transverse tension/compression tests on a tension-compression-torsion test rig with superimposed shear stress, and optically substantiated by insitu X-ray microscopic analyses. The experimental results are compared with the simulatively determined characteristic values. The simulative property determination of the multiscale anisotropic FRP structure is efficiently implemented by using multiscale simulation methods. At the microscale, the material behavior and crack initiation between fibers and matrix are simulated in detail. These data are taken into account in the finite element model, which is used to predict the failure of the fiber-plastic composite at the meso level (layer level). In DamageDict, a simulation tool is being developed, that predicts the failure behavior of fiber-plastic composites at the micro- and mesoscale level.

• Math2Market GmbH