PDFHTML阅读XML下载导出引用引用提醒

　　爆炸冲击波作用下铝合金加筋壁板动态响应

　　DOI:10.12404/j.issn.1671-1815.2307605作者:周佳煜 王彬文 张宇李达诚郭玉佩白春玉中图分类号:O383.3

　　Study on dynamic response of stiffened aluminum alloy plate hit by shock wave

　　Author:Zhou Jiayu Wang Binwen Zhang YuLi DachengGuo YupeiBai Chunyu

　　摘要:

　　为研究爆炸冲击作用下加筋平板上筋条数量与排列方式对平板抗毁伤能力的影响，在筋条形式相同的前提下，建立了八种不同筋条数量和排布形式的加筋平板模型。利用有限元分析软件LS-DYNA，通过基于实验验证的仿真分析模型对爆炸冲击下加筋平板的结构响应进行了仿真分析研究。结果表明:附加筋条对结构在爆炸冲击波作用下的变形挠度峰值影响不显著，但通过合理的设计可使结构残余挠度较普通平板降低30%以上;结构的变形挠度不仅与结构设计有关，也与冲击波正入射的位置有关;总结并拟合了结构中心点位移根据板格上筋条的间距改变而变化的公式，对防护结构的工程设计提供参考。

　　关键词:加筋壁板;爆炸冲击波;动态响应;数值模拟

　　Abstract:

　　In order to study the effects of the number and arrangement of ribs on the reinforced plate on the damage resistance of the plate under explosive impact, eight models of reinforced plates with different numbers and arrangements of ribs were established under the premise of the same rib form. Using the finite element analysis software LS-DYNA, the structural response of the reinforced plate under explosive impact was simulated and analyzed by using the simulation analysis model based on experimental verification. The results show that the additional ribs have no significant effect on the peak deflection of the structure under the action of the explosive shock wave, but by reasonable design, the residual deflection of the structure can be reduced by more than 30% compared with the ordinary plate; the deflection of the structure is not only related to the structural design, but also to the position of the normal incidence of the shock wave; the formula of the displacement of the center point of the structure changing with the spacing of the ribs on the grid is summarized and fitted, which provides reference for the engineering design of the protective structure.