【摘要】 基于船舶建造工艺可行性分析,论文建立了使用自适应模拟退火算法的船体结构动力学优化设计模型;并给出了相应的设计流程.模型以结构最大加速度最小化为目标函数,使用矩阵描述由板材厚度和骨材型号构成的离散变量集合,对某集装箱船艉部结构进行了结构动力特性和动力响应的计算分析与优化设计.结果表明,优化后的艉部结构不仅质量有所减少,而且结构的动力响应大幅度下降,频率储备有所增加,同时满足强度和刚度要求.实例分析表明,该模型能应用于工程结构的实际优化设计.更多还原

【Abstract】 Based on technology feasibility analysis and discrete design variable sets,a dynamic optimization model for ship structure design is built using an adaptive simulated annealing optimization algorithm.The objective function is to minimize the maximum acceleration of structure.The discrete design variable sets including the thickness of plate and model number of beam are depicted with matrices.All the design variables are regarded as the global sharing design variables in optimization process.As an example,a finite element model of ship stern is used to demonstrate the proposed model.The optimal design obtained indicates the great potential of decreasing structural mass and dynamic response and increasing natural frequency reserve.At the same time,the strength and stiffness constraints are satisfied.The result shows the model is feasible and suitable for dynamic optimization of engineering structures.更多还原