CATEGORIES
SPH simulation of a particle impact on a ductile target
1953 views
09.04.2015
Co-author
Affiliation
Fraunhofer IWM, Freiburg, Germany
Main category
Natural Sciences (Physics)
Alternative category
Engineering (Mechanical engineering)
Caption
The sequence shows an impacting body on a ductile target made of Al6061-T1. The impacting body is assumed to be ideally hard. The impact velocity is $45 \mathrm{m/s}$ and is tilted $51^°$ from the horizontal axis. The spacing of the SPH particles is $50\mu \mathrm{m}$. The depth of the crater is compared to the experimental results by Takaffoli & Papini (2012).
Further information
The geometric model is similar to the one used in the experiment and SPH simulations by Takaffoli & Papini (2012). The ductile material behavior is governed by the Johnson-Cook yield strength model. The strain rate dependency of the JC-model is corrected by the Cowper-Symonds relation accounting for high strain rates during the impact. For the removal of material, a failure criterion based on the Johnson-Cook model is applied. The simulations were carried out using SimPARTIX.