Presentation Information
[1F04]Analytical study on impact resistance of composite RC structures with different material layers
*Junji Tsujimura1, Yukihiko Okuda2, Akemi Nishida2, Hiroshi Yamagata1 (1. Nagaoka Univ. of Tech., 2. JAEA)
Keywords:
Multi material layered concrete,Local failure,Oblique impact,Numerical simulation
New safety regulations require measures to mitigate the impact of flying objects, such as aircraft, on nuclear facilities. Conventional reinforced concrete (RC) structures used in reactor buildings are prone to localized damage, including penetration and spalling, caused by stress waves generated upon impact. This study explores reducing such damage by disrupting stress wave propagation. Stress waves partially transmit and reflect at material interfaces, with reduced transmission achieved by combining different materials. Based on this principle, a composite RC structure layered with rubber and steel was proposed and analyzed using LS-DYNA software. Results show that RC structures layered with rubber significantly reduced backside damage compared to conventional RC structures.