The design of doubly curved sandwich panels with honeycomb cores

1991 ◽  
Vol 17 (2) ◽  
pp. 95-111 ◽  
Author(s):  
K.E. Evans
Keyword(s):  
Sandwich Panels ◽  
Honeycomb Cores ◽  
Doubly Curved

Ballistic impact behaviors of aluminum alloy sandwich panels with honeycomb cores: An experimental study

2016 ◽  
Vol 20 (7) ◽  
pp. 861-884 ◽  
Author(s):  
QN Zhang ◽  
XW Zhang ◽  
GX Lu ◽  
D Ruan
Keyword(s):  
Aluminum Alloy ◽  
Energy Absorption ◽  
Impact Velocity ◽  
Sandwich Panels ◽  
Sheet Thickness ◽  
Face Sheet ◽  
Ballistic Limit ◽  
Core Density ◽  
Impact Tests ◽  
Honeycomb Cores

To study the protection property of aluminum alloy sandwich panels with honeycomb cores under the attack of bullets or debris, quasi-static perforation, and ballistic impact tests were conducted, in which the thicknesses of the face sheet and core were 0.5–2.0 and 12.7 mm, respectively, while projectiles with diameter 7.5 mm and impact velocity 50–220 m/s were employed. Based on the experiments, the influences of impact velocity, face sheet thickness, core density as well as the nose shape of the projectiles were investigated. The results showed that in the impact tests, the sandwich panels dissipated much more energy than those in quasi-static perforation tests, and the energy absorption and ballistic limit of the sandwich panels increased with the increase of impact velocity. The influence of face sheet thickness was more remarkable than the core density, which was due to the relative density of honeycomb is too small. Although the increase of core density could induce the increase of energy absorption, this effect is more effective for thinner face sheet. Moreover, under the same impact velocity about 200 m/s and face sheet thickness 1.0 mm, the ballistic limit for conical-nosed projectile is highest, while it is lowest for flat-nosed projectile.

Structural performance of metallic sandwich panels with square honeycomb cores

2005 ◽  
Vol 85 (26-27) ◽  
pp. 3207-3234 ◽  
Author(s):  
F. W. Zok * ◽  
H. Rathbun ◽  
M. He ◽  
E. Ferri ◽  
C. Mercer ◽  
...  
Keyword(s):  
Sandwich Panels ◽  
Structural Performance ◽  
Honeycomb Cores

Sandwich panels with layered graded aluminum honeycomb cores under blast loading

2017 ◽  
Vol 173 ◽  
pp. 242-254 ◽  
Author(s):  
Shiqiang Li ◽  
Xin Li ◽  
Zhihua Wang ◽  
Guiying Wu ◽  
Guoxing Lu ◽  
...  
Keyword(s):  
Sandwich Panels ◽  
Blast Loading ◽  
Aluminum Honeycomb ◽  
Honeycomb Cores

Buckling of Sandwich Panels with Laminated Face Plates

1972 ◽  
Vol 23 (2) ◽  
pp. 148-160 ◽  
Author(s):  
T R A Pearce ◽  
J P H Webber
Keyword(s):  
Carbon Fibre ◽  
Sandwich Panels ◽  
Numerical Results ◽  
Simply Supported ◽  
Face Plate ◽  
Honeycomb Cores ◽  
Orthotropic Properties ◽  
Overall Buckling

SummaryThe buckling of simply-supported sandwich panels, made up from fibre reinforced laminated face plates and honeycomb cores, is considered when they are subjected to uniform end loading. Numerical results are given for both overall buckling and face plate wrinkling for panels having typical carbon fibre faces with the laminations arranged to give effectively orthotropic properties.

scholarly journals Nonlinear response of doubly curved sandwich panels with CNT-reinforced composite core and elastically restrained edges subjected to external pressure in thermal environments

2021 ◽  
Author(s):  
Hoang Van Tung ◽  
Dao Nhu Mai ◽  
Vu Thanh Long
Keyword(s):  
Nonlinear Response ◽  
Effective Properties ◽  
Sandwich Panels ◽  
Shear Deformation Theory ◽  
External Pressure ◽  
Functionally Graded ◽  
Thermal Environments ◽  
Reinforced Composite ◽  
Approximate Analytical Solutions ◽  
Doubly Curved

An analytical investigation on the nonlinear response of doubly curved panels constructed from homogeneous face sheets and carbon nanotube reinforced composite (CNTRC) core and subjected to external pressure in thermal environments is presented in this paper. Carbon nanotubes (CNTs) are reinforced into the core layer through uniform or functionally graded distributions. The properties of constituents are assumed to be temperature dependent and effective properties of CNTRC are determined using an extended rule of mixture. Governing equations are established within the framework of first order shear deformation theory taking into account geometrical imperfection, von Kármán–Donnell nonlinearity, panel-foundation interaction and elasticity of tangential edge restraints. These equations are solved using approximate analytical solutions and Galerkin method for simply supported panels. The results reveal that load carrying capacity of sandwich panels is stronger when boundary edges are more rigorously restrained and face sheets are thicker. Furthermore, elevated temperature has deteriorative and beneficial influences on the load bearing capability of sandwich panels with movable and restrained edges, respectively.

Sign in / Sign up

Export Citation Format

Share Document