Combined viscoelastic and elastic wave dissipation mechanism at low velocity impact

摘要: Abstract The understanding of effects occurring during low velocity normal particle impact on a hard elastic plate is important for the description different processes pneumatic conveying, in jet mills, mixers, or fluidized bed apparatuses. In this study, suitable semi-empiric method proposed to calculate coefficient restitution. This restitution modelled by means combination two approaches. first approach based dissipation energy due bending wave excitation described only one inelasticity parameter. second viscoelastic mechanism dissipation, represented an additional damping coefficient. Thus, these coefficients are responsible and calculated independently from each other. summarized used determine both material parameters coefficients. A good agreement between measured was observed. way, interaction steel spheres impacting glass plates with thickness comparable diameter sphere as example.