Analysis of Thermal Deformation on a Honeycomb Sandwich CFRP Mirror

Thermal deformation analysis was performed on a carbon fiber reinforced plastic (CFRP) mirror with sandwich structure. To obtain unexpected asymmetry of the surface sheet, we investigated the deformation of a quasi-isotropic laminate under hot and humid conditions. Despite the symmetric lay-up, quas...

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Bibliographic Details
Published in:Mechanics of advanced materials and structures 2010-06, Vol.17 (5), p.328-334
Main Authors: Arao, Yoshihiko, Koyanagi, Jun, Utsunomiya, Shin, Kawada, Hiroyuki
Format: Article
Language:English
Subjects:
Asymmetry
Carbon fiber reinforced plastics
Deformation
dimensional stability
finite element analysis (FEA)
Honeycomb
Honeycomb construction
Laminates
Mathematical models
Misalignment
polymer-matrix composites (PMCs)
sandwich
thermal deformation
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Summary:Thermal deformation analysis was performed on a carbon fiber reinforced plastic (CFRP) mirror with sandwich structure. To obtain unexpected asymmetry of the surface sheet, we investigated the deformation of a quasi-isotropic laminate under hot and humid conditions. Despite the symmetric lay-up, quasi-isotropic laminate deforms into twisted saddle shape with time, and this deformation could be simulated by assuming ply angle misalignment. Then, the elastic moduli of honeycomb cores were calculated theoretically. A honeycomb sandwich mirror model was constructed by adopting a sheet model and using honeycomb elements. The thermal deformation analysis was performed considering the ply angle misalignment. The test results clarified that the deformation of the surface sheet was a critical factor in the dimensional stability of the CFRP mirror.
ISSN:1537-6494
1537-6532
DOI:10.1080/15376494.2010.488533