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Bachelorarbeit

Implementierung einer Erweiterung zur Behandlung von Hochgeschwindigkeitseinschlag im SiPER SPH-code
Bearbeiter Tom Cesko
Betreuer M.Sc. Marvin Becker
Prüfer Prof. Dr. rer. nat. habil. Miriam Mehl
Ende04/2019
Beschreibung

In order to numerically predict HVI (high-velocity-impact) the FE-method (Finite Element) is well suited for estimating the trajectory and residual velocity of the impactor but has severe difficulties in predicting the fracture. In contract, the SPH-method (Smooth-Particle-Hydrodynamics) is a very popular approach for modeling fracture of ductile materials and is able to handle large velocities, pressure rates and deformations. A simulation environment with access to the source code is essential for exactly understanding which equations are solved and further to easily extend it with new numerical schemes or material and fracture models. The SiPER code from the ICVT (Institute for Chemical and Process Engineering) is an explicit SPH solver which is able to predict he behavior of fluids.
The SiPER code is written in C and designed to be easily readable and extandable without deeper programming skills but is still capable to handle large number of particles. In order to apply the code to HVI a new formulation for solid elements, a material model and also a boundary condition needs to be implemented. A typical validation case for HVI is the Taylor-bar-impact and experimental results can be taken from literature. Numerical results with the commercial code LS-DYNA(R) will be conducted by the supervisor.