Tea polyphenol attenuates oxidative stress‐induced degeneration of intervertebral discs by regulating the Keap1/Nrf2/ARE pathway

D Song, J Ge, Y Wang, Q Yan, C Wu… - Oxidative medicine …, 2021 - Wiley Online Library
Objective. Intervertebral disc degeneration (IDD) and low back pain caused by IDD have
attracted public attention owing to their extremely high incidence and disability rate …

A modified viscoplastic model to predict the permanent deformation of asphaltic materials under cyclic-compression loading at high temperatures

MK Darabi, RKA Al-Rub, EA Masad, CW Huang… - International Journal of …, 2012 - Elsevier
When subjected to cyclic creep (ratcheting) loading with rest periods between the loading
cycles, the viscoplastic behavior of asphaltic materials changes such the rate of …

A coupled viscoplastic-damage constitutive model for semicrystalline polymers

J Wiersma, T Sain - Mechanics of Materials, 2023 - Elsevier
In the present work, the large deformation rate-dependent constitutive behavior of isotactic
polypropylene is studied via an experimentally validated macroscale constitutive model. To …

A hygro-thermo-mechanical coupled cyclic constitutive model for polymers with considering glass transition

C Yu, G Kang, K Chen - International Journal of Plasticity, 2017 - Elsevier
Based on the experimental observations to the cyclic deformation of polyamide-6 polymer
(PA6) involving a multi-field coupled issue, a new hygro-thermo-mechanical coupled cyclic …

Cyclic viscoplasticity of semicrystalline polymers with finite deformations

AD Drozdov, R Klitkou, JC Christiansen - Mechanics of Materials, 2013 - Elsevier
Observations are reported on low density polyethylene (LDPE) in uniaxial tensile cyclic tests
(oscillations between maximum elongation ratios k max (n) and the zero minimum stress σ …

Effect of crystalline content on ratchetting of ultra-high molecular weight polyethylene polymers: experimental investigation and constitutive model

K Chen, G Kang, C Yu, H Jiang - Mechanics of Materials, 2019 - Elsevier
The uniaxial multi-level loading-unloading-recovery, uniaxial creep-recovery and uniaxial
and non-proportional multi-axial stress-controlled cyclic tests were first performed to study …

Fatigue analysis of spherulitic semi‐crystalline polymers: Unveiling the effects of microstructure and defect

C Jiang, J Zhou, J Cui, J Shi… - Fatigue & Fracture of …, 2024 - Wiley Online Library
A micromechanical model considering the spherulite structure of semi‐crystalline polymers
was established in this study. The micro stress–strain histories were captured by combining …

Anisotropic (continuum damage mechanics)-based multi-mechanism model for semi-crystalline polymer

W Ayadi, L Laiarinandrasana… - International Journal of …, 2018 - journals.sagepub.com
In this work, the anisotropic damage of semi-crystalline polymers is investigated. The model,
developed within a thermodynamic framework, includes the following features:(i) the degree …

Cyclic hardening-relaxation viscoplasticity model for asphalt concrete materials

MK Darabi, RK Abu Al-Rub, EA Masad… - Journal of Engineering …, 2013 - ascelibrary.org
A cyclic hardening-relaxation model is proposed that significantly enhances the prediction of
the viscoplastic (VP) strain of asphalt concrete under cyclic compressive-loading conditions …

A new unified constitutive model for SAC305 solder under thermo-mechanical loading

G Chen, T Hu, M Xie, J Yang, W Xu - Mechanics of Materials, 2019 - Elsevier
To describe the mechanical properties of SAC305 under comprehensive loading conditions,
a new model was proposed based on the internal variable theory. The tensile property of …