A Bimaterial Beam Strategy for Suppressing Thermal Deformation of Arc-Shaped CFRP Ribs via Asymmetric Laminate Design.

Yonggang Xue, Xiaofei Ma, Yonggang Fang, Dayu Zhang, Jialong Zhu, Pengbo Su

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Article in Materials (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

6 authors.

Yonggang XueCollege of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.

Xiaofei MaCollege of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.

Yonggang FangXi'an Institute of Space Radio Technology, Xi'an 710100, China.

Dayu ZhangXi'an Institute of Space Radio Technology, Xi'an 710100, China.

Jialong ZhuXi'an Institute of Space Radio Technology, Xi'an 710100, China.

Pengbo SuXi'an Institute of Space Radio Technology, Xi'an 710100, China.

Funding

National Natural Science Foundation of China 12494564

6 · The paper itself

Abstract

Deployable reflector antennas demand high geometric precision; the Ruze equation directly links surface error to RF gain. Arc-shaped CFRP ribs are vulnerable to thermal deformation, as their curvature converts in-plane expansion into out-of-plane displacement, which symmetric laminates cannot suppress. Classical laminate theory (CLT) underestimates the coefficient of thermal expansion (CTE) of cross-ply laminates by factors of 1.75-2.38 for the laminate configurations investigated in this study, causing up to 79.4% of displacement prediction errors in symmetric designs. Here, we present an asymmetric laminate that overcomes both limitations. The upper skin (nine plies) and lower/web skins (seven plies) from the same prepreg batch create a CTE mismatch (Δα = 6.30 × 10

Indexed as

asymmetric laminatebimaterial beamCFRPcommon-mode rejectionCTEspace structuresthermal deformation

Identifiers

PMID42513870

DOI10.3390/ma19143137

PMCPMC13413529

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