Numerical Analysis of Dynamic Response of Corrugated Core Sandwich Panels Subjected to Near-Field Air Blast Loading

Table 1

Geometric parameters and simulation results of computational cases considered.

Case number	SOD	Thickness			Cell size	Relative density of core	Equivalent solid plate thickness	Peak reflected pressure	Maximum momentum of front face	Maximum deflection		Failure mode
	(mm)	Face sheets	Core	Cell wall	(mm)	(%)	(mm)	(KPa)	(kg×m/s)	Front face	Back face	Front face	Back face
		(mm)	(mm)	(mm)						(mm)	(mm)	—	—
S20-1	30	2.0	17.32	1.0	20	10.35	5.79	5.3021 × 10^6	5.46	—	16.19	Pitting	Pitting
S20-2	50	2.0	17.32	1.0	20	10.35	5.79	1.3000 × 10^6	4.40	—	11.89	Pitting	Indenting
S20-3	80	2.0	17.32	1.0	20	10.35	5.79	2.9786 × 10^5	2.84	7.60	3.77	Indenting	Mode I
S20-4	100	2.0	17.32	1.0	20	10.35	5.79	9.2518 × 10^4	2.40	3.52	2.08	Indenting	Mode I
S20-5	30	2.0	17.32	0.7	20	7.48	5.30	5.2770 × 10^6	5.65	—	—	Pitting	Pitting
S20-6	50	2.0	17.32	0.7	20	7.48	5.30	1.3002 × 10^6	4.79	—	13.04	Pitting	Indenting
S20-7	80	2.0	17.32	0.7	20	7.48	5.30	2.9583 × 10^5	3.12	10.18	4.94	Indenting	Mode I
S20-8	100	2.0	17.32	0.7	20	7.48	5.30	9.2578 × 10^4	2.74	4.11	2.67	Indenting	Mode I
S20-9	30	1.6	17.32	1.0	20	10.35	5.00	4.7094 × 10^6	4.95	—	—	Pitting	Pitting
S20-10	50	1.6	17.32	1.0	20	10.35	5.00	1.2140 × 10^6	4.60	—	13.54	Pitting	Indenting
S20-11	80	1.6	17.32	1.0	20	10.35	5.00	2.3078 × 10^5	3.18	9.97	5.05	Indenting	Mode I
S20-12	100	1.6	17.32	1.0	20	10.35	5.00	8.5525 × 10^4	2.46	5.09	2.81	Indenting	Mode I
S20-13	30	1.6	17.32	0.7	20	7.48	4.50	4.6998 × 10^6	5.18	—	—	Pitting	Petalling
S20-14	50	1.6	17.32	0.7	20	7.48	4.50	1.2163 × 10^6	4.95	—	15.76	Pitting	Indenting
S20-15	80	1.6	17.32	0.7	20	7.48	4.50	2.2944 × 10^5	3.46	12.85	6.78	Indenting	Mode I
S20-16	100	1.6	17.32	0.7	20	7.48	4.50	8.5567 × 10^4	2.65	5.74	3.47	Indenting	Mode I
S20-17	30	1.2	17.32	1.0	20	10.35	4.19	3.3315 × 10^6	4.43	—	—	Pitting	Petalling
S20-18	50	1.2	17.32	1.0	20	10.35	4.19	1.0004 × 10^6	4.70	—	18.69	Pitting	Indenting
S20-19	80	1.2	17.32	1.0	20	10.35	4.19	2.1489 × 10^5	3.45	14.00	7.20	Indenting	Mode I
S20-20	100	1.2	17.32	1.0	20	10.35	4.19	8.3993 × 10^4	2.83	7.71	4.27	Indenting	Mode I
S20-21	30	2.5	17.32	1.0	20	10.35	6.79	5.5797 × 10^6	5.54	—	—	Pitting	Pitting
S20-22	50	2.5	17.32	1.0	20	10.35	6.79	1.3328 × 10^6	4.23	20.26	7.20	Indenting	Indenting
S20-23	80	2.5	17.32	1.0	20	10.35	6.79	3.0174 × 10^5	2.90	5.47	2.78	Indenting	Mode I
S20-24	100	2.5	17.32	1.0	20	10.35	6.79	9.2833 × 10^4	2.40	2.27	1.51	Mode I	Mode I
S20-25	30	2.0	17.32	0.5	20	5.46	4.95	5.2755 × 10^6	5.97	—	—	Pitting	Petalling
S20-26	50	2.0	17.32	0.5	20	5.46	4.95	1.2955 × 10^6	5.07	—	11.18	Pitting	Indenting
S20-27	80	2.0	17.32	0.5	20	5.46	4.95	2.9245 × 10^5	3.40	11.74	5.83	Indenting	Mode I
S20-28	100	2.0	17.32	0.5	20	5.46	4.95	8.9711 × 10^4	3.05	6.15	3.83	Indenting	Mode I
S28-1	30	2.0	24.25	1.0	28	7.63	5.85	5.2730 × 10^6	6.26	—	—	Pitting	Pitting
S28-2	50	2.0	24.25	1.0	28	7.63	5.85	1.2972 × 10^6	5.42	—	8.64	Pitting	Indenting
S28-3	80	2.0	24.25	1.0	28	7.63	5.85	2.9478 × 10^5	3.86	9.05	3.33	Indenting	Mode I
S28-4	100	2.0	24.25	1.0	28	7.63	5.85	9.0553 × 10^4	4.08	4.57	1.70	Indenting	Mode I
S28-5	30	2.0	24.25	0.7	28	5.46	5.32	5.2839 × 10^6	5.85	—	—	Pitting	Pitting
S28-6	50	2.0	24.25	0.7	28	5.46	5.32	1.2950 × 10^6	5.75	—	10.18	Pitting	Indenting
S28-7	80	2.0	24.25	0.7	28	5.46	5.32	2.9364 × 10^5	4.12	11.15	4.56	Indenting	Mode I
S28-8	100	2.0	24.25	0.7	28	5.46	5.32	9.0679 × 10^4	3.27	5.16	2.40	Indenting	Mode I
S28-9	30	1.6	24.25	1.0	28	7.63	5.05	4.7042 × 10^6	5.87	—	—	Pitting	Pitting
S28-10	50	1.6	24.25	1.0	28	7.63	5.05	1.2155 × 10^6	5.55	—	—	Pitting	Pitting
S28-11	80	1.6	24.25	1.0	28	7.63	5.05	2.3130 × 10^5	4.09	11.56	4.29	Indenting	Mode I
S28-12	100	1.6	24.25	1.0	28	7.63	5.05	8.5910 × 10^4	3.39	6.14	2.32	Indenting	Mode I
S28-13	30	1.6	24.25	0.7	28	5.46	4.52	4.7099 × 10^6	6.19	—	—	Pitting	Petalling
S28-14	50	1.6	24.25	0.7	28	5.46	4.52	1.2130 × 10^6	5.83	—	—	Pitting	Pitting
S28-15	80	1.6	24.25	0.7	28	5.46	4.52	2.3342 × 10^5	4.35	14.05	6.07	Indenting	Mode I
S28-16	100	1.6	24.25	0.7	28	5.46	4.52	8.5914 × 10^4	3.55	6.82	3.02	Indenting	Mode I
S40-1	30	2.0	34.64	1.0	40	5.46	5.89	5.2807 × 10^6	7.14	—	—	Pitting	Pitting
S40-2	50	2.0	34.64	1.0	40	5.46	5.89	1.2993 × 10^6	6.29	—	7.79	Pitting	Indenting
S40-3	80	2.0	34.64	1.0	40	5.46	5.89	2.9633 × 10^5	4.81	11.20	2.70	Indenting	Mode I
S40-4	100	2.0	34.64	1.0	40	5.46	5.89	9.1120 × 10^4	4.08	6.20	1.44	Indenting	Mode I
S40-5	30	2.0	34.64	0.7	40	3.88	5.34	5.2818 × 10^6	7.41	—	—	Pitting	Pitting
S40-6	50	2.0	34.64	0.7	40	3.88	5.34	1.2993 × 10^6	6.64	—	6.14	Pitting	Indenting
S40-7	80	2.0	34.64	0.7	40	3.88	5.34	2.9029 × 10^5	5.04	13.11	3.73	Indenting	Mode I
S40-8	100	2.0	34.64	0.7	40	3.88	5.34	9.1133 × 10^4	4.21	6.73	2.06	Indenting	Mode I
S40-9	30	1.6	34.64	1.0	40	5.46	5.09	4.6923 × 10^6	6.86	—	—	Pitting	Pitting
S40-10	50	1.6	34.64	1.0	40	5.46	5.09	1.2123 × 10^6	6.43	—	—	Pitting	Pitting
S40-11	80	1.6	34.64	1.0	40	5.46	5.09	2.3034 × 10^5	4.93	14.07	3.41	Indenting	Mode I
S40-12	100	1.6	34.64	1.0	40	5.46	5.09	8.5560 × 10^4	4.25	7.85	1.83	Indenting	Mode I
S40-13	30	1.6	34.64	0.7	40	3.88	4.54	4.7152 × 10^6	7.03	—	—	Pitting	Pitting
S40-14	50	1.6	34.64	0.7	40	3.88	4.54	1.2134 × 10^6	6.65	—	—	Pitting	Pitting
S40-15	80	1.6	34.64	0.7	40	3.88	4.54	2.3274 × 10^5	5.18	16.59	4.82	Indenting	Mode I
S40-16	100	1.6	34.64	0.7	40	3.88	4.54	8.5552 × 10^4	4.38	8.46	2.63	Indenting	Mode I