固支浅圆拱受子弹撞击的实验研究

本文报导了铝合金固支浅圆拱在子弹撞击下动力响应的实验研究,试验中采用应变片测量并由高速摄影得到试件变形的瞬态记录。实验结果表明,此类浅拱的动力响应不存在失稳现象;但在某一撞击速度区间内,拱的中心位移增加较快,拱的响应前期轴力可以忽略不计,而在后期则必须考虑。

EXPERIMENTAL INVESTIGATION OF CLAMPED SHALLOW ARCHES SUBJECTED TO PROJECTILE IMPACT

The dynamic responses of clamped shallow arches, made of aluminum - alloy, subjected to projectile impact are investigated experimentally. The strain recorder and high -speed camera are used to study the deformation process of arches. The experimental data show that, over a small range of impact velocity, the arch undergoes a significant increase in response. The axial deformation alone the arch can be negelected during the early response phase, but it becomes an important factor during the late response phase.