大型舰船圆筒型水下防护结构性能分析
Analysis of protective performance of large ship's cylindrical underwater protection structure
张博文 1聂晨曦 1姬祥 1明付仁 2张阿漫3
作者信息
- 1. 哈尔滨工程大学 船舶工程学院,黑龙江 哈尔滨 150001
- 2. 哈尔滨工程大学 船舶工程学院,黑龙江 哈尔滨 150001;哈尔滨工程大学 船舶结构冲击动力学黑龙江省重点实验室,黑龙江 哈尔滨 150001;哈尔滨工程大学 船舶结构安全全国重点实验室,黑龙江 哈尔滨 150001
- 3. 哈尔滨工程大学 船舶工程学院,黑龙江 哈尔滨 150001;哈尔滨工程大学 船舶结构安全全国重点实验室,黑龙江 哈尔滨 150001
- 折叠
摘要
[目的]针对传统"空舱-液舱-空舱"三舱型防护结构重量大、防护效率较低的问题,探讨圆筒型水下防护结构的防护性能.[方法]建立基于任意拉格朗日-欧拉(ALE)算法的数值模型,通过典型的结构接触爆炸算例,验证ALE算法的精度;然后在此基础上分别建立传统的三舱型防护结构和圆筒型防护结构模型,通过数值模拟分析相同药量水下接触爆炸后的应力、应变最大值以及能量吸收等特征参数,从而得到各自的防护性能.[结果]结果显示,圆筒型防护结构防御纵壁的位移小于防水纵壁的位移,这与传统三舱型防护结构的规律相反;甲板、双层底结构吸收的能量相比传统防护结构少了 9.92%,具有明显的垂向抗变形优势.[结论]研究表明,圆筒型防护结构在药量相同的情况下其毁伤程度更低,可为水下防护结构的创新设计提供新的思路.
Abstract
[Objective]In response to the problems of high weight and relatively low protective efficiency associated with traditional multicamerate structures(i.e.,void compartment-liquid tank-void compartment),this study explores the protective performance of underwater cylindrical protective structures.[Methods]A numerical model based on an arbitrary Lagrangian-Eulerian(ALE)algorithm is established and verified through a contact explosion case involving a typical structure.On this basis,models of the traditional multi camerate protective structure and cylindrical protective structure are then established.Through numerical sim-ulation,parameters such as maximal stress,strain and energy absorption after underwater contact explosion with the same explosive charge are analyzed,and their respective protective performances obtained.[Results]The displacement of the defended longitudinal wall of the cylindrical protective structure is smal-ler than that of the watertight longitudinal wall,which is contrary to the behavior of traditional multicamerate protective structures.Additionally,the energy absorbed by the deck and double bottom is 9.92%less than that of the traditional protective structure,demonstrating a significant advantage in resisting deformation in the ver-tical direction.[Conclusion]The results of this study indicate that the cylindrical protective structure exhib-its a lower level of damage under the same charge,providing new insights for the innovative design of under-water protection structures.
关键词
圆筒型防护结构/接触爆炸/任意拉格朗日-欧拉算法/毁伤破坏/吸能规律Key words
cylindrical protective structure/contact explosion/arbitrary Lagrangian-Eulerian(ALE)algori-thm/damage/energy absorption引用本文复制引用
基金项目
国家自然科学基金资助项目(52071109)
黑龙江省优秀青年科学基金资助项目(YQ2020E027)
出版年
2024
国家科技期刊平台
NSTL
万方数据