Experimental study on dynamic response and residual compressive strength of composite sandwich panel with PVC foam core under single-point low-velocity impact

Chongyi CHEN; Yongjun CHENG; Wei CAI; Zhuo YIN; Haixiao HU; Jingnan WANG; Yu YU

doi:10.19693/j.issn.1673-3185.03337

Chinese Journal of Ship Research, Volume. 19, Issue 4, 263(2024)

Experimental study on dynamic response and residual compressive strength of composite sandwich panel with PVC foam core under single-point low-velocity impact

Chongyi CHEN¹, Yongjun CHENG², Wei CAI¹, Zhuo YIN³, Haixiao HU⁴, Jingnan WANG³, and Yu YU³

Author Affiliations

¹State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

²Wuhan Maritime Communication Research Institute, Wuhan 430205, China

³Wuhan Haiwei Marine & Ocean Engineering Technology Co. Ltd., Wuhan 430200, China

⁴Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics, Wuhan University of Technology, Wuhan 430070, China

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Table 1. Parameters of impact tests
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Table 1. Parameters of impact tests
序号试验编号 M/kg V₀/（m·s⁻¹） E₀/J
1 TB35 15 2.12 35
2 TB50 15 2.54 50
3 TB65 15 2.90 65
4 TB80 15 3.22 80
5 TB95 15 3.52 95
6 TB110 15 3.79 110
7 TB125 15 4.04 125
8 TB150 17 4.16 150

Table 2. Results of impact tests

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Table 2. Results of impact tests

试验编号	回弹速度V_r /(m·s⁻¹)	最大冲击力F_m/kN	凹坑深度W/mm	能量吸收E_b/J
TB35	1.26	13.25	1.914	21.89
TB50	1.55	16.16	2.409	30.19
TB65	1.39	17.74	3.513	48.53
TB80	1.13	19.92	4.562	68.32
TB95	1.08	20.26	5.618	84.07
TB110	1.01	19.70	7.176	99.97
TB125	0.85	19.50	9.067	116.90
TB150	0.78	22.69	10.318	131.55

Table 3. Experimental results of compressive residual strength of composite sandwich panels after impact

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Table 3. Experimental results of compressive residual strength of composite sandwich panels after impact

试验编号	冲击能量E₀ /J	最大加载力F_max/kN	剩余压缩强度$ \sigma_{{\mathrm{d}}}$/MPa	凹坑深度与试样厚度的比值$W/ H $	冲击裂纹长度与试样长度的比值$ l_{\mathrm{c}}/L $	剩余压缩强度系数$ \bar \sigma $
TB0	0	155.64	59.86	0	0	1
TB35	35	108.33	41.67	0.07	0.120	0.696
TB65	65	91.66	35.25	0.13	0.187	0.589
TB95	95	86.34	33.21	0.21	0.200	0.555
TB150	150	80.96	31.14	0.38	0.200	0.520

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Chongyi CHEN, Yongjun CHENG, Wei CAI, Zhuo YIN, Haixiao HU, Jingnan WANG, Yu YU. Experimental study on dynamic response and residual compressive strength of composite sandwich panel with PVC foam core under single-point low-velocity impact[J]. Chinese Journal of Ship Research, 2024, 19(4): 263

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