A Large Deformation Model for the Elastic Moduli of Two-dimensional Cellular Materials

武汉理工大学学报-材料科学版(英文版), 2006, 21(2): 154-157.

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1.College of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China

2.College of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China

3.School of Mechanical and Electrical Engineering, Wuhan University of Technology, Wuhan 430070, China

4.College of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China

基金项目: ROCS SEM

A Large Deformation Model for the Elastic Moduli of Two-dimensional Cellular Materials

Keywords： cellular materials

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 longer 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.

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A Large Deformation Model for the Elastic Moduli of Two-dimensional Cellular Materials

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