Simulation analysis of mechanical properties of micro-fibrillated composite foams based on DF formula

Abstract

Abstract: In this work， the mechanical properties of in?situ fibrous foam materials with different porosity were measured， and the ABAQUS UMAT subroutine was used to model the obtained mechanical properties based on continuum mechanics. The stress response of the sandwich?structural foam was analyzed under three different loads of tension， compression and bending， and the simulation results were compared with the experimental ones. The results indicated that the error between the experimental and simulation data was less than 10 %， and the deviation was small. This demonstrated that the constitutive model used in this study could well reflect the mechanical properties of in?situ fibrous foam materials.

Key words: composite material, in?situ fibrillation, constitutive model, ellipticity, yield stress

References

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