CAJ | 학술논문

舰船结构在受到高强度爆炸载荷作用时的破坏形式主要是板架的塑性大变形和撕裂。对四边约束矩形板在爆炸冲击波载荷下的塑性大变形响应进行了理论分析和试验研究。基于板的大挠度变形理论和能量守恒原理，建立了矩形板在爆炸载荷作用下发生塑性大变形的弹塑性分析方法。将理论计算与试验及数值计算进行对比，表明弹塑性分析方法有较好的计算精度和适用性。可用于计算舰船局部结构对舱内爆炸冲击波的响应，为舰船的抗爆设计提供理论依据。
함선결구재수도고강도폭작재하작용시적파배형식주요시판가적소성대변형화시렬。대사변약속구형판재폭작충격파재하하적소성대변형향응진행료이론분석화시험연구。기우판적대뇨도변형이론화능량수항원리，건립료구형판재폭작재하작용하발생소성대변형적탄소성분석방법。장이론계산여시험급수치계산진행대비，표명탄소성분석방법유교호적계산정도화괄용성。가용우계산함선국부결구대창내폭작충격파적향응，위함선적항폭설계제공이론의거。
Major failure modes of ship structure subjected to high-intensity explosion loading are large plastic deformation and tear of stiffened plates. In this paper, theoretical and experimental studies on large plastic deformation of clamped rectangular plates under blast loads are conducted. An elastic-plastic analytical method for predicting dynamic response of rectangular plates is developed. Center displacement histories of rectangular plates are acquired. By comparing analytical results with experimental data and numerical results, it is shown that the proposed elastic-plastic method has relatively good accuracy and applicability, which can be applied to rapid assessment of dynamic response of local structures of warships under internal blast loads and to the blast resistance design of warships.