摘要
讨论了船舶坐墩配墩设计中存在的非概率不确定性及其描述。提出了一个非概率不确定性条件下船舶坐墩支墩配置优化设计的数学模型。着重分析了船体梁载荷和支墩组合刚度不确定性对设计结果的影响。计算结果表明,考虑参数不确定性后,配墩方案发生了变化,支墩结构重量也有所增加。增加的支墩材料是用于提高结构物抵抗不确定性参数波动变化的能力。相对于船体梁载荷不确定性,支墩组合刚度不确定性对设计结果的影响较大。
In this paper, non-probabilistic uncertainties in design of docking blocks are discussed. A mathematical model is proposed for optimization of docking blocks with uncertain ship girder loads and combined stiffnesses of docking blocks considered. Emphasis is placed on effects of non-probabilistic uncertainties in ship girder loads and combined stiffnesses of docking blocks on optimal solution. Numerical results show that uncertainties considered affect the optimization of docking blocks and lead to increase in weights of blocks. Increased weights are utilized to increase the resistance of the structure to variation of uncertain variables. The effect of uncertain combined stiffnesses of blocks on design is larger than that of ship girder loads with uncertainty.
出处
《工程力学》
EI
CSCD
北大核心
2003年第3期129-133,共5页
Engineering Mechanics
关键词
船舶
舰船工程
应用研究
优化设计
非概率不确定性
船舶坐墩
支墩
naval architecture
applied research
optimization
non-probabilistic uncertainty
ship docking
docking block
