Multi-Objective Optimization Design of Radar Absorbing Sandwich Structure

CHEN Ming-ji; PEI Yong-mao; FANG Dai-ning

doi:10.3879/j.issn.1000-0887.2010.03.007

Volume 31 Issue 3

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Article Navigation > Applied Mathematics and Mechanics > 2010 > 31(3): 315-323

CHEN Ming-ji, PEI Yong-mao, FANG Dai-ning. Multi-Objective Optimization Design of Radar Absorbing Sandwich Structure[J]. Applied Mathematics and Mechanics, 2010, 31(3): 315-323. doi: 10.3879/j.issn.1000-0887.2010.03.007

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Multi-Objective Optimization Design of Radar Absorbing Sandwich Structure

doi: 10.3879/j.issn.1000-0887.2010.03.007

AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P. R. China;
LTCS, College of Engineering, Peking University, Beijing 100871, P. R. China

Received Date: 2009-11-26
Rev Recd Date: 2010-01-27
Publish Date: 2010-03-15

Abstract

Abstract

By introducing a dimen sionless parameter to couple the two objectives, weight and radar absorbing performance, in a single objective function, a multi-objective optmiization procedure for radar absorbing sandwich structure (RASS) with cellular core has been proposed. The optmiization models considered were one-side clamped sandwich panels with four kinds of cores which were subject to uniformly distributed loads. The average specular reflectivity calculated by transfer matrix method and periodic moment method was utilized to characterize the radar absorbing performance, while the mechanical constraints included facesheet yielding, core shearing and facesheet wrinkling. The optimization analysis indicated that sandwich structure with two-dmiensional (2D) composite lattice core filled with ultra-lightweight spongy may be a better candidate of lightweight RASS than those with cellular foam or hexagonal honeycomb cores. The 2D Kagome lattice was found to outperform the square lattice with respect to radar absorbing.
- sandwich structure,
- multi-objective optimization,
- lightweight,
- radar absorbing,
- failure mode

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References

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