Volume 36 Issue 7
Jul.  2010
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Chen Wei, Lu Zixing. Yield surface of transversely isotropic foams under axisymmetric loadings[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(7): 853-856. (in Chinese)
Citation: Chen Wei, Lu Zixing. Yield surface of transversely isotropic foams under axisymmetric loadings[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(7): 853-856. (in Chinese)

Yield surface of transversely isotropic foams under axisymmetric loadings

  • Received Date: 06 May 2009
  • Publish Date: 30 Jul 2010
  • The effective stress and mean stress description method for two-dimension (2D) materials was applied to obtain the formulae of characteristic mean stress, characteristic stress, and characteristic strain of three-dimension (3D) transversely isotropic materials under proportional axisymmetric loadings. Then the yield surface model expressed by characteristic mean stress and characteristic stress was established. Through the analysis of transversely isotropic face-centered cubic unit cell model by using finite-element method (FEM), the impact of cell aspect ratio on the elastic properties and the yield surface for transversely isotropic foams was also investigated. The results show that the increase of cell aspect ratio leads to the augment of longitudinal modulus, the decrease of transverse modulus and the anticlockwise rotation of yield surface. The model corresponds well with the modified Gurson-s model and the FEM results, and thus provides a new description for 3D transversely isotropic foams- yield surface.

     

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  • [1] Gibson L J,Ashby M F.Cellular solids:Structures & properties[M].Cambridge:Cambridge University Press,1997 [2] 卢子兴,郭宇.金属泡沫材料力学行为的研究概述[J].北京航空航天大学学报,2003,29(1):978-983 Lu Zixing,Guo Yu.Brief review of studies on the mechanical behavior of metallic foams[J].Journal of Beijing University of Aeronautics and Astronautics,2003,29(1):978-983 (in Chinese) [3] Deshpande V S,Fleck N A.Isotropic constitutive models for metallic foams[J].Journal of the Mechanics and Physics of Solids,2000,48(6):1253-1283 [4] Deshpande V S,Fleck N A.Multi-axial yield behaviour of polymer foams[J].Acta Materialia,2001,49(10):1859-1866 [5] Chen C,Lu T J.A phenomenological framework of constitutive modeling for incompressible and compressible elasto-plastic solids[J].International Journal of Solids and Structures,2000,37(52):7769-7786 [6] Tvergaard V.Influence of void nucleation on ductile shear fracture at a free surface [J].Journal of the Mechanics and Physics of Solids,1982,30(6):399-425 [7] Gioux G,Mccormack T M,Gibson L J.Failure of aluminum foams under multiaxial loads [J].International Journal of Mechanical Sciences,2000,42(6):1097-1117 [8] Tagarielli V L,Deshpande V S,Fleck N A,et al.A constitutive model for transversely isotropic foams,and its application to the indentation of balsa wood [J].International Journal of Mechanical Science,2005,47(4/5):666-686 [9] Alkhader M,Vura M.An energy-based anisotropic yield criterion for cellular solids and validation by biaxial FE simulations[J].Journal of the Mechanics and Physics of Solids,2009,57(5):871-890 [10] 袁本立,卢子兴.基于三类单胞模型的开、闭孔泡沫材料弹性性能的有限元分析[J].机械强度,2007,29(4):627-631 Yuan Benli,Lu Zixing.Finite element analysis of elastic properties of open-cell and closed-cell foam based on three kind of cell models[J].Journal of Mechanical Strength,2007,29(4):627-631(in Chinese)
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