Cyclic deformation behavior of an epoxy polymer. Part II: Predictions of viscoelastic constitutive models
| Autor: | Zihui Xia, Xinghe Shen, Fernand Ellyin |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
chemistry.chemical_classification
Cyclic stress Materials science Polymers and Plastics Deformation (mechanics) Constitutive equation General Chemistry Polymer Epoxy Viscoelasticity Nonlinear system Cyclic deformation chemistry visual_art Materials Chemistry visual_art.visual_art_medium Composite material |
| Zdroj: | Polymer Engineering & Science. 45:103-113 |
| ISSN: | 1548-2634 0032-3888 |
| Popis: | The experimental results presented in Part I of this study were used to evaluate the predictive capabilities of two viscoelastic constitutive models. One of the models, developed by Xia and Ellyin, is in a differential form. The other, which is a modified Schapery model by Lai and Bakker, is in an integral form. The results of the comparison indicate that the Xia-Ellyin constitutive model simulated the experimental observations well. This was attributed to the existence of a general rule that delineates the loading and unloading parts of the cyclic response. The modified Schapery model was able to predict the general trends of the deformation behavior; however, it was unable to correctly simulate the unloading behavior. This difference became more pronounced when the applied cyclic stress/strain was high. At high applied loads, the material response became more nonlinear. POLYM. ENG. SCI. 45:103–113, 2005. © 2004 Society of Plastics Engineers |
| Databáze: | OpenAIRE |
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