Imagen de Portada

A Novel Phenomenological Constitutive Model for Semi-Crystalline Polymers Across a Wide Strain-Rate Range

Guardado en:
Publicado en:Polymers vol. 17, no. 6 (2025), p. 762
Autor principal: Zhang, Yuxiang
Otros Autores: Runqiang Chi, Wang, Shengjie, Zhang, Xuewen, Si, Jiyue, Zhao, Yuchen, Cui, Guangzhi, Ma, Jun
Publicado:
MDPI AG
Materias:
Strain gauges
Polymers
Strain rate
Simulation
Parameter identification
Accuracy
Compatible software
Global optimization
Strain hardening
Constitutive models
Algorithms
Energy dissipation
Deformation
Viscoelasticity
Acceso en línea:Citation/Abstract
Full Text + Graphics
Full Text - PDF
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
Resumen:Focusing on the complex mechanical responses exhibited by semi-crystalline polymers under the coupled influences of strain hardening, strain-rate strengthening, and temperature softening, this paper proposes a phenomenological constitutive model employing a three-branch parallel structure. Using a hybrid global optimization algorithm, the optimal parameters for polypropylene were identified, attaining a coefficient of determination of 0.9834 and controlling the average absolute relative error within 6.4%. Moreover, the effectiveness of the proposed constitutive model was accurately validated through two material models from the LS-Dyna software 4.8.29 database, and the simulation results exhibited high consistency with the theoretical model. This study provides a high-confidence material model suitable for high-strain-rate simulation scenarios.
ISSN:2073-4360
DOI:10.3390/polym17060762
Fuente:Materials Science Database