弹载加速度记录仪抗冲击防护结构设计

马喜宏;李长龙;孙韬;刘俊.

振动与冲击 ›› 2013, Vol. 32 ›› Issue (3) : 64-67.

PDF(1061 KB)
PDF(1061 KB)
振动与冲击 ›› 2013, Vol. 32 ›› Issue (3) : 64-67.
论文

弹载加速度记录仪抗冲击防护结构设计

  • 马喜宏1,2,李长龙1,2,孙韬1,2,刘俊1.2
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The anti-impact protective structure design of the accelerometer recorder on board

  • Xihong Ma 1,2 Chaglong Li 1,2 Tao Sun 1,2 Jun Liu1,2
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摘要

针对弹体侵彻混凝土环境,提出一种中薄型防护外壳嵌套内壳体,两壳体间填充泡沫铝缓冲材料的记录仪抗冲击防护结构。针对应力波作用下防护外壳的屈曲和泡沫铝缓冲性能不足导致内部电路模块冲击断裂的典型失效模式,通过对记录仪抗冲击防护结构在应力波作用下的结构响应分析,提出了一套以壳体厚度h、泡沫铝密度ρ、泡沫铝厚度hb为主要设计指标的弹载加速度记录仪抗冲击防护结构设计方法。设计了防护外壳半径为29 mm,壁厚3 mm,泡沫铝密度1.1 g/cm3 ,泡沫铝厚度23 mm的抗冲击防护结构,经计算该结构理论抗冲击能力为63300g。在实弹侵彻混凝土试验中,测得冲击加速度峰值为56300 g,在此冲击下记录仪壳体结构稳定,内部电路工作正常,验证了此抗冲击防护结构具有较高的可靠性。

Abstract

For the environment of projectile penetrating the concrete, the anti-impact protective structure of the recorder is proposed, which is the medium-thin protection shell nested within inner shell filled with aluminum foam between the shells. For the protection shell bulking under the stress wave and the typical failure modes of the inner circuit module fracture which caused by the shortage of buffer performance, the structure response of the recorder anti-impact protective structure is analyst under stress wave, the design method of missile acceleration recorder protective structure is advanced ,which has the shell thickness h、aluminum foam density ρ、the aluminum foam thickness hb as the main design specification. The recorder of protection shell is put forward in the paper and the radius is 29 mm, thickness is 3 mm, aluminum foam density is 1.1 g/cm3 and thickness is 23 mm, which anti-impact ability is 63300g.At the test of projectile penetrate the concrete, the impact acceleration peak is 56300g. The recorder structure is stabile under the impact and inner circuit working properly under the impact, which verificates the anti-impact protective structure designed by the method has the higher reliability.

关键词

弹体侵彻混凝土 / 弹载加速度记录仪 / 记录仪抗冲击防护结构设计

Key words

missile penetrate concrete / missile accelerometer recorder / design of anti-impact protective recorder

引用本文

导出引用
马喜宏;李长龙;孙韬;刘俊.. 弹载加速度记录仪抗冲击防护结构设计[J]. 振动与冲击, 2013, 32(3): 64-67
Xihong Ma;Chaglong Li; Tao Sun; Jun Liu;. The anti-impact protective structure design of the accelerometer recorder on board[J]. Journal of Vibration and Shock, 2013, 32(3): 64-67

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