Investigation of the shock damping process in metals under contact explosion loading

A diffuse interface model of reactive-fluids and solid-dynamics

“…The tests were run with a base resolution of 16 × 160, with 2 layers of AMR for the 4 mm test and 4 layers for the 15 mm test, giving a resolution of 1×10 −4 m in both cases. As mentioned by Cooper et al [10], the experimental conditions for Mali [23] are very close the experiments performed by Deribas et al [13]. To this end, the shock conditions considered were taken from Deribas et al [13], where the bottom of the domain was accelerated to 876 m•s −1 .…”

“…As mentioned by Cooper et al [10], the experimental conditions for Mali [23] are very close the experiments performed by Deribas et al [13]. To this end, the shock conditions considered were taken from Deribas et al [13], where the bottom of the domain was accelerated to 876 m•s −1 . The thickness of the copper plate between the shock and the indentation was kept at 14 mm for both tests, meaning the only difference in either case was the radius of the indentation.…”

An Eulerian particle level set method for compressible deforming solids with arbitrary EOS

“…According to the experimental data, the pressure and particle velocity behind the shock at the vicinity of the hemisphere apex are 23 000 MPa and 0.540 km/s, respectively. Since the experimental conditions for the shock wave loading are very close to the condition for the shock wave damping [30], the shock wave can be generated by allowing the plate to impact a rigid surface with an initial velocity of 0.540 km/s as shown in Figure 11. The observation time is considered to be 60 s. The material model used here is the Johnson-Cook model and the material properties are as in Example 1.…”

The Influence of a Degree of Initial Material Defects on the Strain Structure Formed in the Explosive Collapsing Thick-Walled Cylinders

“…Previous hardening has been performed with the samples in the form of a disk with diameter of 30 mm and I0 mm thick. The hardening is carried out by the plane shock wave generator [5] and explosive charge made of the composition TNT+RDX 50150 with thckness of 10 mm. According to our calculations, the pressure in the samples varies fiom contact the surface to the depth of 30 mm fiom 32 to 24 GPa [5].…”