World Journal of Mechanics

Volume 3, Issue 1 (February 2013)

ISSN Print: 2160-049X   ISSN Online: 2160-0503

Google-based Impact Factor: 1  Citations  h5-index & Ranking

Modeling Fiber Composites during the Cure Process for Piezoelectric Actuation

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DOI: 10.4236/wjm.2013.31002    6,087 Downloads   9,822 Views  Citations

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ABSTRACT

Analytical, numerical, and experimental modeling methods are presented to predict deformation after the cure process of thin unsymmetric laminates for piezoelectric actuation. During fabrication, laminates deform to several post-cure room temperature shapes. Thin cross-ply laminates deform to a circular cylindrical post-cure shape while thicker laminates deform to a saddle shape. Post-cure shapes are dependent on ply orientation, thickness, and material properties. Because, CLT alone does not always predict the correct post-cure room temperature shape of the thin composite laminates, an extension of CLT with the Rayleigh-Ritz technique and potential energies are used to better predict these shapes. Finite element models are used to predict the post-cure room temperature shapes. Thin composite laminates are modeled coupling heat transfer and structural mechanics, which are necessary for modeling the cure process. Modeling the fabrication process captured important data such as residual stresses from the cure process, room temperature shapes, and bi-stability of the composite laminates. To validate these analytical and numerical results, experiments were con- ducted using macro-fiber composite (MFC) patches for morphing the laminates. The experimental piezoelectric morph- ing results relate well to analytical and numerical results.

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D. Murray and O. Myers, "Modeling Fiber Composites during the Cure Process for Piezoelectric Actuation," World Journal of Mechanics, Vol. 3 No. 1, 2013, pp. 26-42. doi: 10.4236/wjm.2013.31002.

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