摘要
复合材料高速船舶在复杂多变的海况中航行时,由于船体结构自身的大幅升沉和纵荡运动,不可避免地会与波浪产生砰击作用,可能产生结构损伤甚至失效。采用欧拉-拉格朗日方法建立了复合材料层合板砰击数值模型,将模拟结果与文献中的试验结果进行对比,验证了流固耦合渐进损伤分析方法的可靠性。在此基础上,建立了碳纤维增强复合材料夹芯板入水砰击流固耦合数值模型,编写了VUMAT子程序,研究了复合材料夹芯板渐进损伤演化特性,分析了砰击水动力载荷、射流和水压分布特性,研究了砰击速度和斜升角对夹芯板损伤特性的影响规律。结果表明,碳纤维增强复合材料夹芯板入水砰击过程经历4个阶段,即初始增长阶段、波动阶段、急剧上升阶段和迅速下降阶段。砰击载荷作用下复合材料夹芯板产生基体损伤和分层损伤,随着砰击速度提升和斜升角增大,砰击水动力载荷逐渐增加,复合材料夹芯板面板损伤范围逐渐扩大。
In this paper,a slamming model of composite laminate is established based on the Euler-Lagrangian fluid-structure interaction method.The reliability of the numerical simulation method is verified through the comparison between numerical and experimental results.On this basis,a fluid-structure interaction slamming model of carbon fiber reinforced composite sandwich panels is established,and the progressive damage evolution mode of composite sandwich panels is investigated by VUMAT subroutine.The hydrodynamic force,flow jet,and water pressure distribution as well as slamming damage characteristics of composite sandwich panels are analyzed.Finally,the effects of slamming speed and deadrise angle on the slamming damage characteristics are investigated.The results show that the hydrodynamic force has gone through four stages including the initial growth stage,fluctuating stage,sharp rise stage and rapid decreasing stage during the slamming process.The matrix tensile damage and delamination damage of composite sandwich plates are accumulated under slamming loading.With the increase of the slamming speed and deadrise angle,the hydrodynamic force and slamming damage significantly increase.
作者
王松
李应刚
黄鑫华
李晓彬
WANG Song;LI Yinggang;HUANG Xinhua;LI Xiaobin(Key Laboratory of High Performance Ship Technology(Wuhan University of Technology),Ministry of Education,Wuhan 430063,Hubei,China;School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,Hubei,China;Sanya Science and Education Innovation Park of Wuhan University of Technology,Sanya 572025,Hainan,China)
出处
《高压物理学报》
CAS
CSCD
北大核心
2023年第1期106-116,共11页
Chinese Journal of High Pressure Physics
基金
国家自然科学基金(11972269)
武汉理工大学三亚科教创新园开放基金(2021KF0029)。
关键词
砰击载荷
碳纤维复合材料
夹芯结构
损伤演化
流固耦合
slamming loading
carbon fiber reinforced composite material
sandwich structure
damage evolution
fluid-structure interaction
