FFT – Mechanics of Polymers

Is it possible to characterize the linear viscoelasticity of an anisotropic carbon fibers reinforced thermoplastic polymer?

November 25, 2024 by admin

When dealing with isotropic polymer, it is easy to characterize the linear viscoelasticity in the lab via dynamic mechanic analysis in tension, torsion. What about for a transversely isotropic material such as a carbon fibers reinforced polymer? Actually, one may find out that it is not possible to directly assert any of the five parameters...

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carbon fibers composites FFT homogenization viscoelasticity

Python FFT homogenization routine for linear viscoelasticity

August 30, 2021 by admin

This is the python routine I used to calculate the linear viscoelasticity (storage and loss shear moduli) of worm-like microstructures define in the paper on linear viscoelasticity of IPNs. This routine may be used for any two-phase materials with the microstructure of your choice.You need two input.txt (phase1.txt and phase2.txt) files for the behavior constitutive...

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FFT linear viscoelasticity python

Linear viscoelasticity of IPN – FFT analysis

August 30, 2021 by admin

The objective of the study was to characterize and model the linear viscoelasticity of interpenetrated polymer networks showing two clear distinct phase transitions. For this purpose we made in lab some acrylate IPNs by UV curing. In order to avoid fracture of the sample during the making process, the first single network is a lightly...

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FFT homogeneization IPN viscoelasticity