This study evaluated displacement of ceiling system under lastic dynamic load. Main parameters are change of stiffness at connections of bolt and C channel ranged between 0.1~2.0 kN/mm. Program for elastic dynamic anaysis is the MIDAS ZEN. Analysis results showed that connections between bolt and C channel was effective on decreasing of displacement of ceiling system.

• 문주현(지엘기술(주), 기술연구소, 과장) | Mun, Ju Hyun Corresponding author
• 최용수(포엠(주), 기술연구소, 소장) | Choi, Yong Soo
• 심재일(지엘기술(주), 기술연구소, 소장) | Sim, Jae Il