A nonlinear viscoelastic constitutive model of solid propellant
type: Item
instance of: scholarly article
title: A nonlinear viscoelastic constitutive model of solid propellant
zbMATH Open document ID: 0951.74012
DOI: 10.1016/S0020-7683(98)00175-9
author: Gyoo-Dong Jung
author: Sung-Kie Youn
published in: International Journal of Solids and Structures
publication date: 2000-12-18T00:00:00Z
review text: A composite solid propellant is a lightly cross-linked, long-chain polymer filled with solid particles. Such a material exhibits highly nonlinear viscoelastic response due to the damage process, debonding, vacuole formation and cracking under various loading damage. The nonlinearities of solid propellants are mainly due to the Mullin's effect and dewetting. Here the authors propose a nonlinear constitutive model of composite solid propellant by using a viscoelastic dewetting criterion for predicting critical stress at which the dewetting occurs. The softening of the solid propellant due to damage is treated by the modulus decrease, and the stress-strain relation is formulated by using the second Piola-Kirchhoff stress and Green strain tensors. Experimental results show that the model predicts the large range of propellant behaviour with a resonable accuracy.
Mathematics Subject Classification ID: 74D10
Mathematics Subject Classification ID: 74R20
zbMATH DE Number: 1341442
zbMATH Keywords: second Piola-Kirchhoff stress tensors
zbMATH Keywords: Green stress tensor
zbMATH Keywords: cross-linked long chain polymer
zbMATH Keywords: solid particles
zbMATH Keywords: damage
zbMATH Keywords: Mullin's effect
zbMATH Keywords: nonlinear constitutive model
zbMATH Keywords: viscoelastic dewetting criterion
zbMATH Keywords: critical stress
zbMATH Keywords: softening
zbMATH Keywords: stress-strain relation
reviewed by: Gheorghe Gr. Ciobanu
MaRDI profile type: Publication
description: scientific article; zbMATH DE number 1341442