Nonlinear material model for quasi-unidirectional woven composite accounting for viscoelastic, viscous deformation, and stiffness reduction
Zhai Z, Jiang B, Drummer D (2018)
Publication Type: Journal article
Publication year: 2018
Journal
Book Volume: 10
Article Number: 903
Journal Issue: 8
Abstract
To clarify the individual contribution of viscoelastic and viscous deformation to the global nonlinear response of composites, multilevel cyclic loading-unloading recovery tensile tests were carried out. The experimental results show that there is a linear relationship between the viscous strain and viscoelastic strain of composites, regardless of the off-axis angle or loading stress level. On the basis of experimental results, a coupled damage-plasticity constitutive model was proposed. In this model, the plasticity theory was adopted to assess the evolution of viscous strains. The viscoelastic strain was represented as a linear function of viscous strains. Moreover, the Weibull function of the effective stress was introduced to evaluate the damage variables in terms of stiffness reduction. The tensile stress-strain curves, predicted by the proposed model, showed a good agreement with experimental results.
Authors with CRIS profile
Involved external institutions
China (CN)How to cite
APA:
Zhai, Z., Jiang, B., & Drummer, D. (2018). Nonlinear material model for quasi-unidirectional woven composite accounting for viscoelastic, viscous deformation, and stiffness reduction. Polymers, 10(8). https://dx.doi.org/10.3390/polym10080903
MLA:
Zhai, Zhanyu, Bingyan Jiang, and Dietmar Drummer. "Nonlinear material model for quasi-unidirectional woven composite accounting for viscoelastic, viscous deformation, and stiffness reduction." Polymers 10.8 (2018).
BibTeX: Download