A mean-field shear transformation zone theory for amorphous polymers

J Lin, J Qian, Y Xie, J Wang, R Xiao - International Journal of Plasticity, 2023 - Elsevier
The complex nonlinear constitutive behavior of amorphous polymers has been extensively
investigated in numerous experiments, displaying a strong dependence on the thermal …

[HTML][HTML] A constitutive model for amorphous thermoplastics from low to high strain rates: Formulation and computational aspects

AFC Alves, BP Ferreira, FMA Pires - International Journal of Plasticity, 2023 - Elsevier
In this paper, a recently proposed finite strain visco-elastic visco-plastic (three-dimensional)
constitutive model is extended to predict the nonlinear response of amorphous polymers …

Large deformation mechanical behavior and constitutive modeling of oriented PMMA

Y Du, P Pei, T Suo, G Gao - International Journal of Mechanical Sciences, 2023 - Elsevier
Compared with the unoriented polymethyl methacrylate (PMMA), oriented PMMA has much
better mechanical properties, hence widely used in engineering structures. To establish a …

Modelling of fracture-involved large strain behaviors of amorphous glassy polymers via a unified physically-based constitutive model coupled with phase field method

K Li, H Deng, W Xu, Y Liu - Engineering Fracture Mechanics, 2024 - Elsevier
To promote the application of amorphous glassy polymers in structural components, a
reliable prediction of the deformation and the potential fracturing behaviors is in demand …

[HTML][HTML] Mathematical model for characterization of temperature-responsive polymers: a study on the rheological behavior of gelatin and poly (N-isopropylacrylamide)

T Kopač - Polymer Testing, 2024 - Elsevier
This study introduces a mathematical model for detailed characterization of temperature-
responsive polymers, focusing on critical temperature, viscosity, storage modulus, their rate …

[HTML][HTML] Training of a physics-based thermo-viscoplasticity model on big data for polypropylene

B Jordan, D Mohr - International Journal of Plasticity, 2025 - Elsevier
Research on data-driven constitutive models has demonstrated their outstanding ability to
provide highly accurate predictions of the general stress-strain response after learning from …

A Nonlinear Thermo-Visco-Green-Elastic Constitutive Model for Mullins Damage of Shape Memory Polymers under Giant Elongations

A Ostadrahimi, A Enferadi, M Baghani… - Journal of the …, 2025 - Elsevier
In this paper, we introduce a comprehensive 3D finite-deformation constitutive model for
shape memory polymers focused on addressing the Mullins effect when subjected to …

A physically-based constitutive model for amorphous glassy polymers in large deformations

T Lan, T Shao, Y Zhang, Y Zhang, J Zhu, Y Jiang… - European Journal of …, 2024 - Elsevier
A physically-based constitutive model for predicting the mechanical response of amorphous
glassy polymers at room temperature and low strain rates was established within the frame …

Shear bands in amorphous polymers under four-point bending

T Lan, J Zhu, Y Jiang, P Wu, Y Wei - International Journal of Mechanical …, 2024 - Elsevier
As a significant means of plastic deformation in polymers, shear bands play a crucial role in
material failure and performance optimization. In this paper, the finite element method is …

[HTML][HTML] An efficient machine learning-based model for predicting the stress-strain relationships of thermoplastic polymers with limited testing data

S Ling, Z Wu, J Mei, S Lv - Composites Part B: Engineering, 2024 - Elsevier
Thermoplastic polymers used in aeronautical structures such as poly-ether-ether-ketone
(PEEK) usually exhibit nonlinear stress-strain relationships, which can be usually predicted …