船舶临界倾覆状态的功能分析  

ANALYSIS ON WORK AND ENERGY AT CRITICAL CAPSIZE CONDITION OF SHIP

作　　者：徐德嘉[1] 熊鹰[1] 董文才[1] 

机构地区：[1]海军工程学院

出　　处：《中国造船》1997年第4期45-52,共8页Shipbuilding of China

摘　　要：在船舶临界倾覆状态的仿真过程中，用动能定理进行了各种因素的功能分析。证明：阻尼耗散能达到位能之半，导致临界民倾力短显著增大，不可忽略。要准确地估算临界民倾力知还需计及波浪扰动力矩作功和变惯性矩所引起的功能增量。现行稳性规范采用的极限载荷法过检简化、造成难于估计的偏差和难于预测的安全裕度。静稳性和前稳性的概念不符合理论力学的基本观点。In the simulation of ship critical capsize condition, the work and engery are analysed.Damping dissipation energy, which is about half of potential energy, leads to significant increase of critical wind heeling moment. In order to estimate critical wind heeling moment accurately, it is necessary to calculate the work produced by wave exciting moment and the kinetic enery increment produced by variable inertia moment. Ultimate load method adopt ed by present stability rule is oversimplified, and leads to uncertain deviation and safety al lowance. The concepts of statical stability and dynamic stability contradicts general basic mechanics theory.

关 键 词：横摇 数学模拟 船舶 临界倾覆 仿真 

分 类 号：U661.321[交通运输工程—船舶及航道工程]