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In impact simulations, the instantaneous change of velocity in the contact area can lead to artificial oscillations. These oscillations might significantly influence the results, especially when nonlinear and rate dependent constitutive formulations are used.
In this work, a nonlinear penalty formulation similar to a soft contact formulation is presented.
In this work an approach for smoothing the oscillations of normal impact is presented. In addition, a higher order time discretization scheme in association with a higher order spatial discretization, like the spectral element method, is investigated regarding its convergence rates.