Creep analysis of polymer matrix composites using viscoplastic models

Kontou, E.

doi:10.1016/b978-0-08-102601-4.00006-0

Creep and Fatigue in Polymer Matrix Composites 2019

DOI: 10.1016/b978-0-08-102601-4.00006-0

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Creep analysis of polymer matrix composites using viscoplastic models

E. Kontou

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Cited by 2 publications

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Evaluation of the Viscoplastic Strain of High-Density Polyethylene/Multiwall Carbon Nanotube Composites Using the Reaction Rate Relation

Анискевич

Starkova

2021

Mech Compos Mater

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A novel semiempirical method for separating the viscoplastic strains from the total creep strains is proposed and validated by examples of high-density polyethylene (HDPE)/multiwall carbon nanotube (MWCNT) nanocomposites. The method is based on Eyring's reaction rate relation and an analysis of creep data in semilogarithmic strain rate-strain coordinates. The initial linear part of the relation corresponds to the reversible viscoelastic behavior, but the deviation from it is related to the accumulation of viscoplastic strains.The viscoplastic strains are determined by simple calculations using four approximation coefficients determined from two linear parts of the strain rate-strain relation. A common relationship between the viscoplastic and total creep strains is established from data of 57 creep and creep recovery tests for samples filled with various content of MWCNTs and performed under for different stresses and loading times. The validity of the method is proved by the existence of a reasonable correlation between the calculated viscoplastic strains and the residual strains measured experimentally at the creep recovery stage. The method proposed contributes to an effective assessment of viscoplastic strains found from creep tests with no need to study the creep recovery.

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Evaluation of the Viscoplastic Strain of High-Density Polyethylene/Multiwall Carbon Nanotube Composites Using the Reaction Rate Relation

Анискевич

Starkova

2021

Mech Compos Mater

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Long-Term Prediction of Creep and Stress-Relaxation Behaviour in Synthetic Fabrics Using the Time–Temperature Superposition Principle

et al. 2023

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Creep analysis of polymer matrix composites using viscoplastic models

Cited by 2 publications

References 81 publications

Evaluation of the Viscoplastic Strain of High-Density Polyethylene/Multiwall Carbon Nanotube Composites Using the Reaction Rate Relation

Evaluation of the Viscoplastic Strain of High-Density Polyethylene/Multiwall Carbon Nanotube Composites Using the Reaction Rate Relation

Long-Term Prediction of Creep and Stress-Relaxation Behaviour in Synthetic Fabrics Using the Time–Temperature Superposition Principle

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