CAJ | 학술논문

船体板架在水下爆炸载荷作用下的塑性动力响应计算是舰船抗爆性能研究中的一项重要工作，鉴于有限元法对其求解的计算效率无法保证，同时解析法对其求解有技术上的困难等研究现状，提出了一种将船体板架结构简化成刚塑性十字交叉梁，并通过动量定理和动量矩定理由运动方程推导出十字交叉梁结构中横向和纵向构件二者在关联处有力的相互作用时的变形挠度的计算方法。利用此方法计算所得的结果，与实船舱段的有限元模型结果，以及实船舱段的水下爆炸试验的数据进行对比后，吻合较好。结果表明，力学模型选取是合理的，用于水下非接触爆炸的舰船板架挠度变形计算方法不仅保证了计算效率，也保证了计算精度，具有工程实用性。
선체판가재수하폭작재하작용하적소성동력향응계산시함선항폭성능연구중적일항중요공작，감우유한원법대기구해적계산효솔무법보증，동시해석법대기구해유기술상적곤난등연구현상，제출료일충장선체판가결구간화성강소성십자교차량，병통과동량정리화동량구정이유운동방정추도출십자교차량결구중횡향화종향구건이자재관련처유력적상호작용시적변형뇨도적계산방법。이용차방법계산소득적결과，여실선창단적유한원모형결과，이급실선창단적수하폭작시험적수거진행대비후，문합교호。결과표명，역학모형선취시합리적，용우수하비접촉폭작적함선판가뇨도변형계산방법불부보증료계산효솔，야보증료계산정도，구유공정실용성。
The hull grillage beam’s plastic dynamic response in underwater explosion is one of the most important work in the study of anti-explosion performance. The precision of the finite element method used to solve the problem cannot be guaranteed, and the analytic method has technical difficulties. In view of that, a kind of deflection deformation calculation method that hull grillage beam was simplified into a rigid-plastic cross beam, and there is force acted on the correlation place of in the transverse and longitudinal member is put forward, through the theorem of momentum and the moment of momentum constant motion e-quation. Finally, by using this method to calculate the data, the results agree well with the test ’s and this proves that the selection of the mechanical model is rational, and illustrates that the calculation method, used for the hull grillage beam’s deflection of non-contact underwater explosion, which guarantees the cal-culation efficiency and precision, has engineering practicability.