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Analysis and simulation for tensile behavior of anisotropic open-cell elastic foams

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Abstract

Based on the elongated Kelvin model, a simplified periodic structural cell is obtained to investigate the tensile behavior of anisotropic open-cell elastic foams due to Kelvin model’s periodicity and symmetry in the whole space. The half-strut element and elastic deflection theory are used to analyze the tensile response as done in the previous studies. This study produces theoretical expressions for the tensile stress-strain curve in the rise and transverse directions. In addition, the theoretical results are examined with finite element simulation using an existing formula. The results indicate that the theoretical analysis agrees with the finite element simulation when the strain is not too high, and the present model is better. At the same time, the anisotropy ratio has a significant effect on the mechanical properties of foams. As the anisotropy ratio increases, the tensile stress is improved in the rising direction but drops in the transverse direction under the same strain.

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Correspondence to Zi-xing Lu  (卢子兴).

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Project supported by the National Natural Science Foundation of China (Nos. 11472025 and 11272030)

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Lu, Zx., Liu, Q. & Chen, X. Analysis and simulation for tensile behavior of anisotropic open-cell elastic foams. Appl. Math. Mech.-Engl. Ed. 35, 1437–1446 (2014). https://doi.org/10.1007/s10483-014-1874-7

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  • DOI: https://doi.org/10.1007/s10483-014-1874-7

Key words

Chinese Library Classification

2010 Mathematics Subject Classification

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