Multiscale modeling of the radar signature of a composite aircraft

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A two-step approach consisting of meso- and macro-scale simulations is presented to predict the radar signature of a composite aircraft. At the meso-scale, we develop an efficient method to extract the effective anisotropic surface impedances (ASI), which mimic the electromagnetic properties of composite materials for all incident angles and all polarizations of a radar plane wave at the frequency of interest. The approach is based on an Interface-enriched Generalized Finite Element Method (IGFEM), which uses a virtual model composed of finite elements that do not need to conform with material interfaces, yet provides the same level of accuracy as conforming meshes. At the macro-scale, we employ the extracted ASI to construct a well-conditioned surface integral equation (SIE) to predict the radar signature of the whole aircraft. We implement a parallel Multilevel Fast Multipole Algorithm (MLFMA) to reduce the computational complexity and speed up the process of solving the derived SIE.

Original languageEnglish (US)
Title of host publication56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624103421
StatePublished - Jan 1 2015
Event56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2015 - Kissimmee, United States
Duration: Jan 5 2015Jan 9 2015

Publication series

Name56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

Other

Other56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2015
CountryUnited States
CityKissimmee
Period1/5/151/9/15

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Mechanics of Materials
  • Building and Construction

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  • Cite this

    Zhang, K., Jin, J. M., & Geubelle, P. H. (2015). Multiscale modeling of the radar signature of a composite aircraft. In 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference (56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference). American Institute of Aeronautics and Astronautics Inc..