中国舰船研究2025，Vol.20Issue(2)：245-255,11.DOI:10.19693/j.issn.1673-3185.03610
双轴压缩下含舱内爆炸凹陷损伤薄板的剩余极限承载能力试验分析
Experimental analysis on residual ultimate bearing capacity of thin plate with internal explosion dent damage under biaxial compression
敖雷 1史治中 2张磊 1丁子奇 2裴志勇 1吴卫国1
作者信息
- 1. 武汉理工大学 绿色智能江海直达船舶与邮轮游艇研究中心,湖北 武汉 430063
- 2. 武汉理工大学 船海与能源动力工程学院,湖北 武汉 430063
- 折叠
摘要
Abstract
[Objectives]In modern naval warfare,advancements in weaponry have significantly increased the vulnerability of ships to explosion impacts.Precision-guided weapons,in particular,pose a significant threat,as internal explosions within ship cabins can cause extensive damage to thin-walled structures.This damage not only compromises the ship's structural integrity but also affects its overall functionality and safety.To accurately assess a ship's ability to withstand such damage and make informed battlefield decisions,it is crucial to evaluate the residual load-bearing capacity of damaged structures under complex sea conditions.This analysis is essential for evaluating the ship's damage tolerance and determining its ability to safely return to port.[Methods]This study focuses on the behavior of hull plates damaged by in-cabin explosions.A series of meticulously designed model tests were conducted,aiming to analyze the residual load-bearing capa-city of thin plates exhibiting dent damage under biaxial compression.The use of biaxial compression is highly relevant,as it replicates the complex stress states experienced by ship hulls in actual sea conditions.To measure the detailed mechanical behavior of the damaged plates,the digital image correlation(DIC)method was em-ployed.This advanced technique enabled the creation of a three-dimensional full-field strain measurement sys-tem,which recorded the out-of-plane deformation of the plates with high precision.By analyzing this data,the study explored the failure modes of dent-damaged thin plates under biaxial compression,illuminating the mechanisms through which such damage progresses and ultimately leads to structural failure.[Results]The experimental results provided significant insights into the behavior of damaged thin plates under biaxial com-pression.A key finding was that,regardless of the applied loading ratio,the presence of dent damage led to a substantial reduction in the residual load-bearing capacity of the thin plates.In some cases,this reduction reached up to 19.96%,demonstrating the severe impact of even minor damage on the structural performance of the plates.Furthermore,all tested plates ultimately failed due to significant plastic deformation at the inter-section of the loading edges,which underscores the localized nature of the damage and its catastrophic con-sequences for structural integrity.Another key finding was that an increase in the load at one end of the biaxi-al compression resulted in a notable decline in the ultimate bearing capacity at the other end.[Conclusions]This study provides valuable insights into assessing the damage survivability of ships under complex stress conditions.The findings help naval personnel better understand the structural state of damaged ships,enabling them to make informed decisions regarding mission continuation or safe return to port.Additionally,the re-search provides a basis for future research focused on optimizing ship structural design and enhancing dam-age-tolerance capabilities.Overall,this study plays a vital role in ensuring the safety and operational effective-ness of ships in combat and their safe return to port.关键词
爆炸/舱内爆炸/凹陷损伤/双向轴压/全场应变测量技术/剩余极限强度/模型试验Key words
explosions/internal explosion/dent damage/biaxial compression/full field strain measure-ment technology/residual ultimate strength/model test分类
交通工程引用本文复制引用
敖雷,史治中,张磊,丁子奇,裴志勇,吴卫国..双轴压缩下含舱内爆炸凹陷损伤薄板的剩余极限承载能力试验分析[J].中国舰船研究,2025,20(2):245-255,11.
