中国舰船研究2024，Vol.19Issue(z2)：81-89,9.DOI:10.19693/j.issn.1673-3185.03653
滚装船车辆甲板局部强度分析与结构优化设计
Local strength analysis and structural optimization design of Ro-Ro ship's vehicle deck
摘要
Abstract
[Objective]In this study,a lightweight design method and optimal vehicle deck structure design scheme are proposed for a Ro-Ro ship based on the most hazardous working conditions under special vehicle load characteristics.[Methods]First,the hazardous working conditions of the vehicle deck under special vehicle loads are obtained by direct finite element calculation and parametric modeling.Second,based on the mixed-integer sequence quadratic programming algorithm,a lightweight design method for a vehicle deck structure that satisfies local strength is proposed.Finally,the optimal design scheme for the vehicle deck struc-ture under the most dangerous loading conditions is obtained.[Results]The proposed optimal design scheme reduces the weight by 25.88% compared with the initial scheme,while the number of fatigue life cycles of the vehicle deck is 87 096 and the local strength stability and fatigue strength meet the specification requirements.[Conclusions]The results of this study show that the reasonable arrangement of vehicles can significantly reduce the structural stress level of the vehicle deck,and the optimization of deck plate thickness is the most effective solution for reducing its weight.The proposed lightweight design method can provide useful references for the optimal design of vehicle decks for the same type of Ro-Ro ship.关键词
车辆甲板/优化设计/混合整数序列二次规划算法/车辆载荷/疲劳寿命Key words
vehicle deck/optimal design/mixed-integer sequential quadratic programming(MISQP)al-gorithm/vehicle load/fatigue life分类
交通工程引用本文复制引用
李梓淇,乐京霞,冯硕秋..滚装船车辆甲板局部强度分析与结构优化设计[J].中国舰船研究,2024,19(z2):81-89,9.基金项目
国家自然科学基金资助项目(52171320) （52171320）
