Page 56 - 《爆炸与冲击》2026年第01期
P. 56
第 46 卷 郭开岭，等： 铝蜂窝夹芯板入水冲击动态响应特性实验研究 第 1 期
Õ
n
∑
(x i − x) 2
i=1
n−1
η = ×100% (1)
x
i 为测量个数。
式中：x 为测量值， x 为测量平均值，n
250 200
Case 3-1 Case 3-1
200 Case 3-2 150 Case 3-2
Case 3-3 Case 3-3
150 100
Pressure/kPa 100 Pressure/kPa 50
50
0
0
−50 −50
340 350 360 370 380 340 350 360 370 380
Time/ms Time/ms
(a) Measuring point P 1 (b) Measuring point P 2
图 6 重复实验的入水冲击压力时程曲线
Fig. 6 Water impact pressure time-history curves for repeated water-entry impact experiments
7 7
Case 3-1 Case 3-1
6 Case 3-2 6 Case 3-2
Case 3-3 Case 3-3
5 5
2 Deformation/mm 4 3 2 Deformation/mm 4 3
1 1
0 0
−125 −100 −75 −50 −25 0 25 50 75 100 125 −125 −100 −75 −50 −25 0 25 50 75 100 125
x/mm x/mm
(a) Front sheet (b) Back sheet
图 7 重复实验的蜂窝夹芯板中剖面变形轮廓
Fig. 7 Mid-section deformation profiles of AHSPs for repeated water-entry impact experiments
(a) Start the drop stage (b) Relative impact stage with water (c) Maximum splash stage
图 8 蜂窝夹芯板落体入水冲击过程
Fig. 8 Impact process of AHSP dropping into water
011103-7
