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Science China Technological Sciences

, Volume 62, Issue 8, pp 1467–1477 | Cite as

Strength optimization of ultralight corrugated-channel-core sandwich panels

  • ZhenYu Zhao
  • Lang Li
  • Xin Wang
  • QianCheng ZhangEmail author
  • Bin Han
  • TianJian LuEmail author
Article
  • 66 Downloads

Abstract

Novel ultralight sandwich panels, which are comprised of corrugated channel cores and are faced with two identical solid sheets, subjected to generalized bending are optimally designed for minimum mass. A combined analytical and numerical (finite element) investigation is carried out. Relevant failure mechanisms such as face yielding, face buckling, core yielding and core buckling are identified, the load for each failure mode derived, and the corresponding failure mechanism maps constructed. The analytically predicted failure loads and failure modes are validated against direct finite element simulations, with good agreement achieved. The optimized corrugated channel core is compared with competing topologies for sandwich construction including corrugations, honeycombs and lattice trusses, and the superiority of the proposed structure is demonstrated. Corrugated- channel-core sandwich panels hold great potential for multifunctional applications, i.e., simultaneous load bearing and active cooling.

Keywords

sandwich panel corrugated channel generalized bending optimization 

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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.State Key Laboratory for Strength and Vibration of Mechanical StructuresXi’an Jiaotong UniversityXi’anChina
  2. 2.State Key Laboratory of Mechanics and Control of Mechanical StructuresNanjing University of Aeronautics and AstronauticsNanjingChina
  3. 3.Nanjing Center for Multifunctional Lightweight Materials and Structures (MLMS)Nanjing University of Aeronautics and AstronauticsNanjingPR China
  4. 4.School of Mechanical EngineeringXi’an Jiaotong UniversityXi’anChina

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