摘要
数值分析软件LS-DYNA为用户提供了4种不同的爆炸荷载施加方法,为研究哪种方法与真实情况最接近,在已有钢筋混凝土板(RC板)抗爆试验文献的基础上分别对4种方法进行了分析与比较。研究表明:当爆炸荷载较小时,RC板处于弹性阶段,4种方法均能正确地描述其在爆炸荷载下的动力响应;当爆炸荷载较大时,RC板处于塑性及破坏阶段,方法3能较为准确地反映其在爆炸荷载下的破坏特征,方法1与方法4与试验结果存在一定差距。爆炸荷载较大时不应采用方法1施加爆炸荷载。
The numerical analysis software LS-DYNA provides 4 different methods to apply blast load for the user.In order to study which method was the closest to the real situation,on the basis of existing literature on the anti-explosion test of reinforced concrete slab(RC slab),the 4 methods were analyzed and compared.The results show that when the blast load is small,the RC slab is in the elastic stage,and the dynamic response of the RC slab can be described correctly using all the 4 methods.When the blast load is large,the RC slab is in the plastic and failure stage.Method 3 can accurately reflect the failure of the RC slab under the blast load while method 1 and 4 deviate somehow from the test results.It is derived that method 1 should not be used when the blast load is large.
作者
周清
张云海
齐麟
ZHOU Qing;ZHANG Yunhai;QI Lin(Urban Planning and Design institute of Binzhou, Binzhou 256600, China;Airport college, Civil Aviation University of China, Tianjin 300300, China)
出处
《兵器装备工程学报》
CAS
CSCD
北大核心
2021年第2期216-221,共6页
Journal of Ordnance Equipment Engineering
基金
国家自然科学基金项目(51508557)
山东省住房和城乡建设厅综合科技示范项目(2019-K14-001)
山东省住房城乡建设科技计划项目(2017-K4-007,2018-K5-001)。
