Assessment of Laminated Cylindrical Arch Loaded by a Shock Wave

Abstract

Mutual interaction between a semi-cylindrical arch and the air medium in its neighborhood loaded by a blast or shock wave is the subject of the paper put forward. An impingement of blast wave against structures can cause a reflection of the wave off the surface of the structure followed by a substantial transient aerodynamic load, which can cause a significant deformation of the structure. This deformation can alter the overpressure, which is built behind the reflected shock. In addition, a complex aero-elastic interaction between the blast wave and the structure is developed that can induce a reverberation, which can also cause substantial overpressure through the multiple reflections of the wave. This problem is of particular importance in the new design of future civil, military and underground structures built up from composite materials, as well as of military vehicles.