近场水下爆炸冲击波对板架结构毁伤特性研究  

Research on the damage characteristics of grillage structures subjected to near-field underwater blast wave

作　　者：彭依云 王铭明[1,3] 高长伟 PENG Yi-yun;WANG Ming-ming;GAO Chang-wei(School of Electric Power Engineering,Kunming University of Science and Technology,Kunming 650500,China;CSIC No.703 Research Institute,Harbin 150078,China;State Key Laboratory of Eco-hydraulics in Northwest Arid Region,Xi’an University of Technology,Xi’an 710048,China)

机构地区：[1]昆明理工大学电力工程学院,昆明650500 [2]中国船舶重工集团公司第七〇三研究所,哈尔滨150078 [3]西安理工大学省部共建西北旱区生态水利国家重点实验室,西安710048

出　　处：《船舶力学》2020年第8期1081-1090,共10页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(51669008,51969010);省部共建西北旱区生态水利国家重点实验室科研课题(2018KFKT-15)。

摘　　要：加筋板架广泛应用于船体结构,其优良性能可以为舰船结构的防护及优化设计提供技术支持。本文针对近场水下爆炸冲击荷载作用下加筋结构的动力学响应,基于ALE方法采用LS-DYNA软件对三种加筋形式结构进行了数值模拟,分析了板架的变形响应。结果表明:加强筋的设置方式对板架的变形有一定的影响,当三种类型加筋结构的总质量相同时,井字形加强筋的效果较好;对于矩形截面加强筋,结构动力学性能受高宽比影响较明显,在舰船结构设计中应根据实际情况合理选择。此外,还针对不同爆距作用下加筋板的毁伤特性进行了研究,得到了两种不同的毁伤模式。Reinforced grillage structure is widely used in ship structure,whose excellent performance can provide technical support for the protection and optimization design of ship structure.In this paper,the dynamic response of stiffened panel structures under the load of near-field underwater blast wave was studied.Based on ALE method,LS-DYNA software was used to conduct numerical simulation of three types of stiffened structures,and the deformation response was analyzed.The results show that the scheme mode of the stiffeners has a certain influence on the deformation of the plate frame.For rectangular stiffeners,the dynamic performance of the structure is obviously affected by the aspect ratio.In addition,the damage characteristics of stiffened plates under different explosion distances were studied,and two different damage patterns were obtained.

关 键 词：加筋板架 水下爆炸 冲击载荷 ALE方法 

分 类 号：U661.43[交通运输工程—船舶及航道工程]