Fig. 7From: Simulation of impacts on elastic–viscoplastic solids with the flux-difference splitting finite volume method applied to non-uniform quadrilateral meshesTime evolution of the total energy shown for different values of the CFL number, computed with a relaxation parameter \(\tau =1 \times 10^{-7}\) s, with the elastic–viscoplastic finite element (FEM), finite volume (FV) with Strang and Godunov splitting numerical solutions. a \(CFL=0.4\). b \(CFL=0.04\)Back to article page