大开口船舶弹塑性响应的水池模型试验研究  

Tank test study on elastoplastic response of large opening ship model

作　　者：屈毫拓 刘维勤[2] 陆晔[1] 张亚强 吴卫国[3] QU Haotuo;LIU Weiqin;LU Ye;ZHANG Yaqiang;WU Weiguo(China Ship Scientific Research Center,Wuxi 214082,China;School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China;Green&Smart River-Sea-Going Ship,Cruise and Yacht Research Center,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]中国船舶科学研究中心,江苏无锡214082 [2]武汉理工大学船海与能源动力工程学院,湖北武汉430063 [3]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

出　　处：《中国舰船研究》2024年第S02期141-146,共6页Chinese Journal of Ship Research

基　　金：国家自然科学基金资助项目(52071243)。

摘　　要：[目的]旨在探究中部大开口船舶在波浪中的动态运动和结构响应特性。[方法]参考集装箱船中部载货和具有大开口的特点,设计制作加筋板式船舶模型,并在造波水池中开展系列线性和非线性工况试验,测量船模在压载和波浪共同作用下产生的弹性、塑性变形以及甲板区域的应力变化。[结果]结果表明,结构塑性的出现会稍微降低整体纵摇运动的增幅,并延长中垂变形的发生时间;波浪幅值越大,诱发的结构高频振动越明显。[结论]对于中部具有大开口的船舶,中垂时产生的高频应力比中拱时更大,其与低频应力的叠加对船舶安全性会造成更大威胁,需要在船舶设计中予以考虑。[Objective]This study investigates the dynamic motion and structural response characteristics of ships with large openings in the middle under wave conditions.[Methods]Referring to the characteristics of cargo loading and large openings in the middle of container ships,a stiffened plate ship model is designed and manufactured.A series of linear and nonlinear operating condition tests are then conducted in a wavemaking tank to measure the elastoplastic deformation of the ship model under the combined action of ballast and waves,as well as stress changes in the deck area.[Results]The results indicate that the appearance of structural plasticity slightly reduces the growth amplitude of the overall pitch motion and prolongs the occurrence time of sagging deformation;the larger the wave amplitude,the more significant the high-frequency vibration of the structure it causes.[Conclusions]For ships with large openings in the middle,the high-frequency stress generated during sagging is greater than that during hogging,and the superposition of low-frequency stress poses a greater threat to ship safety,which needs to be considered in ship design.The proposed ship model can provide valuable references for the study of the plastic collapse of ships in waves.

关 键 词：船体结构 转角变形 非线性 塑性 模型试验 

分 类 号：U663.2[交通运输工程—船舶及航道工程]