中国舰船研究2023，Vol.18Issue(6)：177-185,9.DOI:10.19693/j.issn.1673-3185.03110
脉冲载荷形状对防爆墙连接件动力响应影响研究
Influence of pulse loading shape on dynamic response of blast wall connectors
摘要
Abstract
[Objectives]During the anti-explosion process,the deformation and damage of blast wall con-nectors can lead to anti-explosion failure.Therefore,it is necessary to study the structural response character-istics of blast wall connectors under explosive loading.[Methods]Specifically,four load forms,namely tri-angular load,gradually applied load,linearly decaying load and rectangular load,are set in LS-DYNA in or-der to simulate the dynamic response of blast wall connectors under the condition that the energy of each ap-plied load is equal.[Results]The results show that for cases with linearly decaying and rectangular pulses,blast wall connectors are more likely to deform and suffer higher stress values.Blast wall connectors are more sensitive to gradually applied load and rectangular load,and the corresponding maximum deformation and maximum stress value can be 202.6%and 93.8%higher respectively than cases with the other two types of loads.Additionally,reverse loading conditions can lead to significant deformation,and the increment of peak pressure can induce plastic deformation under reverse pulse loads.[Conclusions]This study can provide useful references for the design of blast wall connectors.关键词
防爆墙/连接件/载荷形状/塑性形变Key words
blast walls/connectors/load shape/plastic deformation分类
交通工程引用本文复制引用
卞安祺,李春宝,柴威..脉冲载荷形状对防爆墙连接件动力响应影响研究[J].中国舰船研究,2023,18(6):177-185,9.基金项目
国家自然科学基金资助项目(52201379) （52201379）
中央高校基本科研业务费专项资金资助项目(3120622898) （3120622898）
