冲击波负压对防护门反弹效应的影响分析

郭 东;刘晶波;闫秋实

振动与冲击 ›› 2011, Vol. 30 ›› Issue (8) : 82-86,9.

PDF(2065 KB)
PDF(2065 KB)
振动与冲击 ›› 2011, Vol. 30 ›› Issue (8) : 82-86,9.
论文

冲击波负压对防护门反弹效应的影响分析

  • 郭 东1,2; 刘晶波1; 闫秋实1
作者信息 +

Analysis of Rebound Effect for Blast Door Under Negative Phase Pressures

  • Guo Dong1,2; Liu Jing-bo1; Yan Qiu-shi1
Author information +
文章历史 +

摘要

本文对冲击波负压作用下防护门的反弹效应进行了研究,采用合理的荷载假定形式,推导了考虑负压影响的防护门反弹力的精确解析公式,评价了负压对防护门反弹效应的影响规律:即随着比例爆距的增大,负压峰值相对于正压峰值逐渐增大,反弹增大效应也较明显,但这样一个响应可能仅对比较小的超压值才出现,由于正压、负压峰值都较小,防护门刚度较大,故增大的反弹力不足以对防护门造成破坏,设计中可以不考虑负压的影响。

Abstract

The rebound effect of blast door is studied under the negative phase of blast loading. The reasonable approximate blast pulse shape is adopted to obtain the exact analytical formulas of rebound force for blast door, with taking into account the negative phase effect. The blast waves negative phase effect on blast door is assessed. Although the affection of rebound effect is appropriate, only the peak value of negative pressure is close to positive pressure at the condition of large scaled distance, in meantime, negative pressure shows the increasing effects on the rebound for blast door. But the response may be emerged only under the small overpressure. Due to the small peak value of both positive and negative pressures, stiffness of blast door seems to have relatively large value. The blast door would not be damaged by the increased rebound effect, therefore, the effect of negative pressure might be ignored in the design of protective structures.

关键词

冲击波负压 / 防护门 / 反弹效应

Key words

negative phase of blast loading / blast door / rebound effect

引用本文

导出引用
郭 东;刘晶波;闫秋实. 冲击波负压对防护门反弹效应的影响分析[J]. 振动与冲击, 2011, 30(8): 82-86,9
Guo Dong;Liu Jing-bo;Yan Qiu-shi. Analysis of Rebound Effect for Blast Door Under Negative Phase Pressures[J]. Journal of Vibration and Shock, 2011, 30(8): 82-86,9

PDF(2065 KB)

Accesses

Citation

Detail

段落导航
相关文章

/