The paper focuses on optimization of lightweight sandwich panels with prismatic cores subject to bending loads in the two principal in-plane directions. Comparisons are made with optimal designs of panels with corrugated cores: a limiting case. When optimized for loading transverse to the prism axis, prismatic panels outperform those with corrugated cores, especially at lower loads. In contrast, when optimized for longitudinal loading, the corrugated core panel is always superior. Both panels exhibit significant anisotropy: a deficiency mediated by optimizing jointly for both orientations. The designs emerging from joint optimizations have only slightly lower load capacity than those optimized singly, but with the benefit of equal strengths in the two principal directions. Moreover, jointly optimized corrugated and prismatic panels perform equally well. Both are competitive with honeycomb core panels, especially at high load capacities. With the additional potential for multifunctionality (notably active cooling), the corrugated panels appear to be particularly promising thermostructural elements.
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April 2006
Research Papers
Design of Sandwich Panels With Prismatic Cores
Z. Wei,
Z. Wei
Materials Department,
University of California
, Santa Barbara, CA 93106
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F. W. Zok,
F. W. Zok
Materials Department,
e-mail: zok@engineering.ucsb.edu
University of California
, Santa Barbara, CA 93106
Search for other works by this author on:
A. G. Evans
A. G. Evans
Materials Department,
University of California
, Santa Barbara, CA 93106
Search for other works by this author on:
Z. Wei
Materials Department,
University of California
, Santa Barbara, CA 93106
F. W. Zok
Materials Department,
University of California
, Santa Barbara, CA 93106e-mail: zok@engineering.ucsb.edu
A. G. Evans
Materials Department,
University of California
, Santa Barbara, CA 93106J. Eng. Mater. Technol. Apr 2006, 128(2): 186-192 (7 pages)
Published Online: November 2, 2005
Article history
Received:
May 12, 2005
Revised:
November 2, 2005
Citation
Wei, Z., Zok, F. W., and Evans, A. G. (November 2, 2005). "Design of Sandwich Panels With Prismatic Cores." ASME. J. Eng. Mater. Technol. April 2006; 128(2): 186–192. https://doi.org/10.1115/1.2172279
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