A large deformation model for the elastic moduli of two-dimensional cellular materials

Hu Guoming; Wan Hui; Zhang Youlin; Bao Wujun

doi:10.1007/BF02840865

Journal of Wuhan University of Technology Materials Science Edition ›› 2006, Vol. 21 ›› Issue (2) : 154 -157. DOI: 10.1007/BF02840865

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A large deformation model for the elastic moduli of two-dimensional cellular materials

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Abstract

We developed a large deformation model for predicting the elastic moduli of two-dimensional cellular materials. This large deformation model was based on the large deflection of the inclined members of the cells of cellular materials. The deflection of the inclined member, the strain of the representative structure and the elastic moduli of two-dimensional cellular materials were expressed using incomplete elliptic integrals. The experimental results show that these elastic moduli are no langer constant at large deformation, but vary significantly with the strain. A comparison was made between this large deformation model and the small deformation model proposed by Gibson and Ashby.

Keywords

cellular materials / large deformation / model / elastic moduli

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Hu Guoming, Wan Hui, Zhang Youlin, Bao Wujun. A large deformation model for the elastic moduli of two-dimensional cellular materials. Journal of Wuhan University of Technology Materials Science Edition, 2006, 21(2): 154-157 DOI:10.1007/BF02840865

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