高压物理学报2025，Vol.39Issue(6)：75-86,12.DOI:10.11858/gywlxb.20240934
爆炸作用下全户内变电站装配式墙板动力响应的有限元分析
Dynamic Response of Prefabricated Wall Panels for a Whole-Indoor Substation under Blast Loading Based on Finite Element Simulation
摘要
Abstract
The honeycomb core layer is light and has the advantage of high specific stiffness,specific strength and specific energy absorption.A novel prefabricated wall panel structure for substations was designed by combining fiber-reinforced concrete panels,honeycomb core layers,and aluminum alloy panels.The dynamic response of the structure under the blast load was investigated,as well as the effect of the explosive mass and the size of the honeycomb core.In this paper,a finite element model was established and compared with the experimental results,which was found to be in good agreement with each other,thus validating the model.On this basis,the effects of explosive mass and honeycomb core layer on the structural deformation failure mode,midpoint deflection of back panel and energy absorption were investigated.It is shown that the deformation pattern of the structure is mainly concave at the front and convex at the back,and the honeycomb core layer is compressed,resulting in the whole deformation.Then the fiber cement of the front panel is separated with the honeycomb core layer,and the fiber-reinforced concrete panels of the back panel have failure at the center and diagonal,and the crack expandes,and the compression of the core layer increases.It was found that for the same amount of explosion,the center deflection of the back panel of the honeycomb structure with small size was reduced by 18.5%,17.1%,and 18.1%compared to the honeycomb structure with large size.Meanwhile,the energy absorption of the honeycomb structure with small size was increased by 7.8%,6.7%,and 2.2%respectively compared with that of the honeycomb structure with large size.Thus,the honeycomb structure with small size has better impact resistance.Under blast load,the fiber-reinforced concrete panels on the front panel absorbs the most energy,accounting for more than 50%,followed by the honeycomb core layer,accounting for about 45%,and the back panel fiber-reinforced concrete panels absorbs less energy,and the energy absorption is within 5%.关键词
爆炸载荷/装配式墙板结构/纤维混凝土板/力学响应/动力响应Key words
blast load/prefabricated wall panel structure/fiber-reinforced concrete panels/mechanical response/dynamic response分类
力学引用本文复制引用
李林,刘勇,魏珍中,马小敏,雷建银,李世强..爆炸作用下全户内变电站装配式墙板动力响应的有限元分析[J].高压物理学报,2025,39(6):75-86,12.基金项目
国家自然科学基金(12072219,12202303,12372363) （12072219,12202303,12372363）
