Propellants – Mechanics of Polymers

A finite strain viscoelastic model with damage and tension/compression asymmetry

November 25, 2024 by admin

In an effort to bring some clarification on the vast literature on finite strain viscoelastic models, initially defined for elastomers, a review of the pioneering models on finite strain viscoelastic from Le Tallec et al. (1993), Lion (1997) and Reese and Govindjee (1998) has shown that these models are totally equivalent [1]. It is not...

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finite strain GitHub Model Propellants rubbers UMAT viscoelasticity

Impact of matrix/filler adhesion on properties on local damage and macroscopic behavior of propellants

December 2, 2020 by admin

With industrial partner Arianegroup, we studied the mechanical behavior of three propellant-like materials. Two materials were made of an inert matrix with about 55% of sifted 250 microns ammonium perchlorate (AP) or RDX particles. The last material was the polymer matrix filled with about 20% of aluminium 3 microns particles and filled with AP fillers....

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Micromechanics Propellants