This paper presents a finite element based parametric study of the dynamic response and strength of sandwich steel beams with either sinusoidal or trapezoidal corrugated core subjected to impulsive blast loads. The sandwich steel beams consists of flat top and bottom substrates made of Steel 1018 and four core layers of Steel 1008. The core layers are arranged with uniform and non-uniform thicknesses. The finite element model is validated with a set of shock tube experiments and thus makes it feasible for a present parametric design study of core configurations. Sinusoidal and trapezoidal core shapes as well as various core thickness arrangements are taken into consideration for comparing core crushing and buckling behavior and their performances in mitigating blast load effects onto the main structure. A unit-cell beam and a fully clamped sandwich beam are studied to elucidate the effect of core shapes and arrangement onto its dynamic response.
Lampson CW. The blast and radiation from an atomic bomb. In: Proceedings of the conference on building in the Atomic Age. Department of Civil and Sanitary Engineering, Massachusetts Institute of Technology, Boston, MA, 16–17 June 1952.
7.
SmithPHetheringtonJ. Blast and ballistic loading of structures1994Butterworth Heinemann.
8.
US Army, US Navy, US Air Force. Structures to resist the effects of accidental explosions. UFC 3-340-02, 5 December 2008.
9.
AndersonJD. Fundamentals of aerodynamics19843rd ed. McGraw-Hill Science/Engineering/Math.
10.
TaylorGI. The formation of a blast wave by a very intense explosion. I. Theoretical discussion. Proc R Soc Lond Ser A1950; 201: 159–174.
11.
TaylorGI. The formation of a blast wave by a very intense explosion. II. The atomic explosion of 1945. Proc R Soc Lond Ser A1950; 201: 175–186.
12.
KambouchevNNoelsLRadovitzkyR. Nonlinear compressibility effects in fluid-structure interaction and their implications on the air-blast loading of structures. J Appl Phys2006, pp. 100, 163519: 1–11–100, 163519: 1–11.
13.
XueZHutchinsonJW. A comparative study of impulse-resistant metal sandwich plates. Int J Impact Eng2004; 30: 1283–1305.
14.
XueZHutchinsonJW. Preliminary assessment of sandwich plates subject to blast loads. Int J Mech Sci2003; 45: 687–705.
15.
FleckNADeshpandeVS. The resistance of clamped sandwich beams to shock loading. J Appl Mech2004, pp. 71: 386–401–71: 386–401.
16.
TilbrookMTDeshpandeVSFleckNA. The impulsive response of sandwich beams: analytical and numerical investigation of regimes of behavior. J Mech Phys Solids2006; 54: 2242–2280.
17.
LiangCCYangMWuP. Optimum design of metallic corrugated core sandwich panels subjected to blast loads. Ocean Eng2001; 28: 825–861.
18.
RadfordDDFleckNADeshpandeVS. The response of clamped sandwich beams subjected to shock loading. Int J Impact Eng2006; 32: 968–987.
19.
ZhangLHebertRJeffersonJT, et al.Dynamic response of corrugated steel plates with graded cores. Int J Impact Eng2014; 65: 185–194.
20.
DharmasenaKPWadleyHNGXueZ, et al.Mechanical response of metallic honeycomb sandwich panel structures to high-intensity dynamic loading. Int J Impact Eng2008; 35: 1063–1074.
21.
RathbunHJRadfordDDXueZ, et al.Performance of metallic honeycomb-core sandwich beams under shock loading. Int J Solids Struct2006; 43: 1746–1763.
22.
XueZHutchinsonJW. Crush dynamics of square honeycomb sandwich cores. Int J Numer Methods Eng2006; 65: 2221–2245.
23.
NurickGNLangdonGSChiY, et al.Behavior of sandwich panel subjected to intense air blast – part 1: experiments. Compos Struct2009; 91: 433–441.
24.
FerriEDeshpandeVSEvansAG. The dynamic strength of a representative double layer prismatic core: a combined experimental, numerical, and analytical assessment. J Appl Mech2010, pp. 77: 061011–77: 061011.
25.
McShaneGJRadfordDDDeshpandeVS, et al.The response of clamped sandwich plates with lattice cores subjected to shock loading. Eur J Mech A/Solids2006; 25: 215–229.
26.
HanssenAGEnstockLLangsethM. Close-range blast loading of aluminum foam panels. Int J Impact Eng2002; 27: 593–618.
27.
RadfordDDMcShaneGJDeshpandeVS, et al.The response of clamped sandwich plates with metallic foam cores to simulated blast loading. Int J Solids Struct2006; 43: 2243–2259.
28.
AvilaAF. Failure mode investigation of sandwich beams with functionally graded core. Compos Struct2007; 81: 323–330.
29.
ApetreNASankarBVAmburDR. Low-velocity impact response of sandwich beams with functionally graded core. Int J Solids Struct2006; 43: 2479–2496.
30.
GardnerNWangEKumarP, et al.Blast mitigation in a sandwich composite using graded core and polyurea interlayer. Exp Mech2012; 52: 119-133–119-133.
31.
TekalurSAShuklaAShivakumarK. Blast resistance of polyurea based layered composite materials. Compos Struct2008; 84: 271–281.
32.
WangEGardnerNShuklaA. The blast resistance of sandwich composites with stepwise graded cores. Int J Solids Struct2009; 46: 3492–3502.
33.
ZhangPLiuJChengY, et al.Dynamic response of metallic trapezoidal corrugated-core sandwich panels subjected to air blast loading – an experimental study. Mater Des2015; 65: 221–230.
34.
St-PierreLDeshpandeVSFleckNA. The low velocity impact response of sandwich beams with a corrugated core or a Y-frame core. Int J Mech Sci2015; 91: 71–80.
35.
PaczosPWasilewiczPMagnucka-BlandziE. Experimental and numerical investigations of five-layered trapezoidal beams. Compos Struct2016; 145: 129–141.
36.
Magnucka-BlandziEMagnuckiKWittenbeckL. Mathematical modeling of shearing effect for sandwich beams with sinusoidal corrugated cores. Appl Math Model2015; 39: 2796–2808.
37.
BoonkongTShenYOGuanZW, et al.The low velocity impact response of curvilinear-core sandwich structures. Int J Impact Eng2016; 93: 28–38.
