This research focuses on the dynamic response of sandwich panels with multilayered graded hourglass lattice core subjected to blast loading. A three-layer lattice core configuration is proposed to improve the absorption efficient of kinetic energy resulted from blast shock wave. The relative density of each core layer is changed with sectional dimension of core truss members to regulate the energy absorption of each core layer. Three-dimensional numerical simulation analyses of dynamic response are carried out, and the applied impulsive pressure distribution on the surface of the panels is calculated using the CONWEP code. The panels are made of stainless steel AL6XN, which is assumed to follow bilinear strain hardening and strain rate-dependence. Peak back sheet deflection and energy absorption of core layers for four types of hourglass lattice panels are comparatively analyzed and the effects of load intensity on the peak deflection are discussed. Furthermore, the near-optimal configuration under blast loadings is proposed.
EvansAGHutchinsonJWFleckNA, et al.
The topological design of multifunctional cellular metals. Prog Mater Sci2001;
46: 309–327.
2.
LuGYuTX.Energy absorption of structures and materials.
Cambridge:
Woodhead Publishing Ltd, 2003.
3.
FleckNADeshpandeVS.The resistance of clamped sandwich beams to shock loading. J Appl Mech2004;
71: 386–401.
4.
QiuXDeshpandeVSFleckNA.Impulsive loading of clamped monolithic and sandwich beams over a central patch. J Mech Phys Solids2005;
53: 1015–1046.
5.
SchifferATagarielliVL.Under water blast loading of water-backed sandwich plates with elastic cores: theoretical modeling and simulations. Int J Impact Eng2017;
102: 62–73.
6.
ImbalzanoGTranPNgoTD, et al.
Three-dimensional modeling of auxetic sandwich panels for localised impact resistance. J Sandw Struct Mater2017;
19: 291–316.
7.
ImbalzanoGLinforthSNgoTD, et al.
Blast resistance of auxetic and honeycomb sandwich panels: comparisons and parametric designs. Compos Struct2018;
183: 242–261.
8.
RubinoVDeshpandeVSFleckNA.The dynamic response of end-clamped sandwich beams with a Y-frame or corrugated core. Int J Impact Eng2008;
35: 829–844.
9.
RubinoVDeshpandeVSFleckNA.The collapse response of sandwich beams with a Y-frame core subjected to distributed and local loading. Int J Mech Sci2008;
50: 233–246.
10.
RubinoVDeshpandeVSFleckNA.The dynamic response of clamped rectangular Y-frame and corrugated core sandwich plates. Eur J Mech A Solids2009;
28: 14–24.
11.
XiangXMLuGMaGW, et al.
Blast response of sandwich beams with thin-walled tubes as core. Eng Struct2016;
127: 40–48.
12.
WadleyHNG.Multifunctional periodic cellular metals. Philos Trans A Math Phys Eng Sci2006;
364: 31–68.
13.
WangJEvansAGDharmasenaK, et al.
On the performance of truss panels with Kagome cores.Int J Solids Struct2003;
40: 6981–6988.
14.
LimJHKangKJ.Mechanical behavior of sandwich panels with tetrahedral and Kagome lattice cores fabricated from wires.Int J Solids Struct2006;
43: 5228–5246.
15.
XiongJGhoshRMaL, et al.
Bending behavior of lightweight sandwich-walled shells with pyramidal truss cores. Compos Struct2014;
116: 793–804.
16.
XiongJGhoshRMaL, et al.
Sandwich-walled cylindrical shells with lightweight metallic lattice cores and carbon fiber-reinforced composite face sheets. Compos Part A2014;
56: 226–238.
17.
DongLDeshpandeVSWadleyHNG.Mechanical response of Ti-6Al-4V octet truss lattice structures. Int J Solids Struct2015;
60–
61: 107–124.
18.
ZhangGQWangBMaL, et al.
Response of sandwich structures with pyramidal lattice cores under the compression and impact loading. Compos Struct2013;
100: 451–463.
19.
LiuHLiuHYangJL, et al.
Cantilever sandwich beams with pyramidal truss cores subjected to tip impact. Sci China Technol Sci2013;
56: 181–187.
20.
DharmasenaKPWadleyHNGWilliamsK, et al.
Response of metallic pyramidal lattice core sandwich panels to high intensity impulsive loading in air. Int J Impact Eng2011;
38: 275–289.
21.
WadleyHNGDharmasenaKChenYC, et al.
Compressive response of multilayered pyramidal lattices during underwater shock loading. Int J Impact Eng2008;
35: 1102–1114.
22.
JacobMHEricCCAlanJJ.The low velocity impact response of sandwich panels with lattice core reinforcement. Int J Impact Eng2015;
84: 64–77.
23.
ShenYCantwellWMinesR, et al.
Low-velocity impact performance of lattice structure core based sandwich panels. J Compos Mater2014;
48: 3153–3167.
24.
AyhanAO.Stress intensity factors for three-dimensional cracks in functionally graded materials using enriched finite elements. Int J Solids Struct2007;
44: 8579–8599.
25.
SarkarKGanguliR.Closed-form solutions for axially functionally graded Timoshenko beams having uniform cross-section and fixed–fixed boundary condition. Compos Part B2014;
58: 361–370.
26.
OshkourAAOsmanNAABayatM, et al.
Three-dimensional finite element analyses of functionally graded femoral prostheses with different geometrical configurations. Mater Des2014;
56: 998–1008.
27.
ApetreNASankarBVAmburDR.Analytical modeling of sandwich beams with functionally graded core. J Sandw Struct Mater2008;
10: 53–74.
28.
AjdariACanavanPNayeb-HashemiH, et al.
Mechanical properties of functionally graded 2-D cellular structures: a finite element simulation. Mater Sci Eng A2009;
499: 434–439.
29.
FanTZouG.Influences of defects on dynamic crushing properties of functionally graded honeycomb Structures. J Sandw Struct Mater2015;
17: 295–307.
30.
ZhengJQinQHWangTJ.Impact plastic crushing and design of density-graded cellular materials. Mech Mater2016;
94: 66–78.
31.
ZhangLHHebertRWrightJT, et al.
Dynamic response of corrugated sandwich steel panels with graded cores. Int J Impact Eng2014;
65: 185–194.
32.
LiSQLiXWangZH, et al.
Finite element analysis of sandwich panels with stepwise graded aluminum honeycomb cores under blast loads. Compos Part A2016;
80: 1–12.
33.
LiuXRTianXGLuTJ, et al.
Sandwich plates with functionally graded metallic foam cores subjected to air blast loads. Int J Mech Sci2014;
84: 61–72.
34.
LiuXRTianXGLuTJ, et al.
Blast resistance of sandwich-walled hollow cylinders with graded metallic foam cores. Compos Struct2012;
94: 2485–2493.
35.
LiangMZhangGLuF, et al.
Blast resistance and design of sandwich cylinder with graded foam cores based on the Voronoi algorithm. Thin Wall Struct2017;
112: 98–106.
36.
FengLJWuLZYuGC.An Hourglass truss lattice structure and its mechanical performances. Mater Des2016;
99: 581–591.
37.
FengLJXiongJYangLH, et al.
Shear and bending performance of new type enhanced lattice truss structures. Int J Mech Sci2017;
134: 589–598.
38.
HanXYangLYuG, et al.
Blast resistance of multilayer graded lattice sandwich structures. Chinese J Appl Mech2018;
35: 185–190.
39.
ZhangZHNiuCQianHF, et al.
Impact experiment of six-layer pyramidal lattices sandwich panels subjected to near field underwater explosion. Chinese J Ship Res2016;
11: 51–58.
