The compressive and shear responses of corrugated and diamond lattice materials

By F. Côté, V. Deshpande, Norman A. Fleck, A. G. Evans. 2006

272 citations recorded by the source corpus.

Corrugated and diamond lattice materials have been manufactured as the cores of sandwich panels by slotting together stainless steel sheets and then brazing together the assembly. The out-of-plane compressive, transverse shear and longitudinal shear responses of the corrugated cores have been measured at three relative densities 0:03 < q 6 0:10 and compared with analytical and finite element (FE) predictions. Finite element models are in good agreement with the experimental measurements while the analytical models over-predict the measured strength due to a neglect of manufacturing imperfections. The out-of-plane compressive and transverse shear responses of the diamond cores have also been measured at three relative densities 0:08 6 q 6 0:25. The compressive strengths are sensitive to the aspect ratio of the specimens for L/H < 4 and again are below the analytical predictions due to imperfections. The longitudinal shear strength and energy absorption compare favorably with competing core topologies but the prismatic corrugated and diamond cores are weaker than the pyramidal and square-honeycomb under compression and transverse shear. 2005 Elsevier Ltd. All rights reserved.

Subfields: Mechanical Engineering, Mechanics of Materials

View Paper: https://www.semanticscholar.org/paper/73eaca337fd8811fc7c740a1c6cb3b2f21ce6819

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Mechanical Engineering

1. Guoxing Lu
2. D. Ruan
3. Zhihua Wang
4. Norman A. Fleck
5. Feng Zhu
6. V. Deshpande
7. H. Wadley
8. Damiano Pasini

In Mechanics of Materials

1. Guoxing Lu
2. Norman A. Fleck
3. Lin-zhi Wu
4. D. Ruan
5. Zhihua Wang
6. Feng Zhu
7. V. Deshpande
8. Changqing Chen

Citations in the corpus

• Three-point bending of sandwich beams with aluminum foam-filled corrugated cores (2014, background): “9(a) and (b) compared separately the measured out-ofplane peak compressive strength rPeak 33 and specific energy absorption (SEA) Wm of foam-filled sandwich with several competing core designs, including empty corrugated cores, diamond cores [37], square-honeycomb cores [38] and pyramidal truss core”
• The impulsive response of sandwich beams: analytical and numerical investigation of regimes of behaviour (2006, methodology): “Typically, a much smaller fraction of the blast impulse is transmitted into a sandwich beam (at least from an underwater explosion) compared to that transmitted into a monolithic beam of equal mass, see for example Fleck and Deshpande (2004). Thus, in the underwater blast loading investigations of L”
• Origami tubes assembled into stiff, yet reconfigurable structures and metamaterials (2015, background): “These phenomena make thin sheets practical for stiff and lightweight corrugated assemblies (5, 6); however, such systems tend to be static, i.”
• Fabrication and crushing behavior of low density carbon fiber composite pyramidal truss structures (2010, background): “…and Industrial Engineering, Northeastern University, Boston, MA 02115, USA a r t i c l e i n f o Article history: Available online xxxx Keywords: Sandwich panel Mechanical properties Pyramidal truss Carbon fiber 0263-8223/$ - see front matter Crown Copyright 2…”
• Fatigue design of lattice materials via computational mechanics: Application to lattices with smooth transitions in cell geometry (2013, background): “[9], among few researchers, characterized the stress–life curves of sandwich panels with a lattice core made of stainless steel.”
• Plastic Deformation, Failure and Energy Absorption of Sandwich Structures with Metallic Cellular Cores (2010, background): “[82] studied the compressive behaviour of a 2D corrugated core structure (Figure 6(f)), which exhibits peak stress followed by a strong softening response.”