It is necessary to install a damping energy absorbing structure for a certain type of naval gun test shell without projectile belt. Applicable high-performance dampers currently include viscoelastic colloidal damper and magnetorheological damper. and two kinds of special dampers for test shells have been designed and manufactured. In order to evaluate the mechanical properties of thes... https://unitedssports.shop/product-category/goalie-trappers-senior/