Stéphane André ; Julien Boisse ; Camille Noûs - An FFT solver used for virtual Dynamic Mechanical Analysis experiments: Application to a glassy/amorphous system and to a particulate composite

jtcam:6450 - Journal of Theoretical, Computational and Applied Mechanics, April 16, 2021 - https://doi.org/10.46298/jtcam.6450
An FFT solver used for virtual Dynamic Mechanical Analysis experiments: Application to a glassy/amorphous system and to a particulate compositeArticle

Authors: Stéphane André ORCID1,2; Julien Boisse ORCID1,2; Camille Noûs ORCID3,4

FFT-based solvers are increasingly used by many researcher groups interested in modelling the mechanical behavior associated to a heterogeneous microstructure. A development is reported here that concerns the viscoelastic behavior of composite structures generally studied experimentally through Dynamic Mechanical Analysis (DMA). A parallelized computation code developed with complex-valued quantities provides virtual DMA experiments directly in the frequency domain on a heterogeneous system described by a voxel grid of mechanical properties. The achieved precision and computation times are very good. An effort has been made to illustrate the application of such a virtual DMA tool through two examples from the literature: the modelling of glassy/amorphous systems at a small scale and the modelling of experimental data obtained in temperature sweeping mode by DMA on a particulate composite made of glass beads and a polystyrene matrix, at a larger scale. Both examples show how virtual DMA can contribute to question, analyze, and understand relaxation phenomena on either theoretical or experimental points of view.


Published on: April 16, 2021
Accepted on: February 5, 2021
Submitted on: May 6, 2020
Keywords: Dynamic Mechanical Analysis,FFT-solver,Viscoelasticity,Homogenization,Glassy polymers,Particle composites,[PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph]

Software

other
Archived | swh:1:dir:013573086777370b558b1a9ecb6d0dca9bb8ea18;origin=https://gitlab.com/lemta-rheosol/craft-virtual-dma;visit=swh:1:snp:ef1a939275f05b667e189afbeed5fd59cca51c9d;anchor=swh:1:rev:ad74f6a7f73c7906f9b36ee28dd006231f42552e 1
  • 1 HAL

Publications

Consultation statistics

This page has been seen 999 times.
This article's PDF has been downloaded 644 times.