An Anisotropic Hyperelastic Constitutive Model for Predicting Preforming Deformation of 3D Woven Fabrics
3D woven fabrics is gradually widely used in the manufacture of aero-engine blades,magazines and other complex curved structures.The complex deformation behavior of 3D dry-fiber woven fabrics in the preforming process was studied.Based on the theory of continuum medium mechanics,an anisotropic hyperelastic constitutive model was proposed to describe the anisotropic mechanical deformation behavior of 3D woven fabrics due to large deformations.The strain energy density functions were established by the deformation experiments of 3D woven fabrics.The material parameters of 3D woven fabrics are obtained,and the validity of the hyperelastic constitutive model proposed in this paper was verified by the finite element simulation and experiments of the bias-extension and the hemispherical stamping preforming.The hyperelastic constitutive model can play a guiding role in the finite element analysis model and the optimized design of the forming process of 3D woven fabrics.
3D woven fabricspreforming processhyperelastic constitutive modelfinite element analysis model
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