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Wagner modelWagner model is a rheological model developed for the prediction of the viscoelastic properties of polymers. It might be considered as a simplified practical form of the Bernstein-Kearsley-Zapas model. The model was developed by German rheologist Manfred Wagner. Additional recommended knowledgeFor the isothermal conditions the model can be written as: where:
The strain damping function is usually written as:
The strain hardening function equal to one, then the deformation is small and approaching zero, then the deformations are large. The Wagner equation can be used in the non-isothermal cases by applying time-temperature shift factor. References
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Wagner_model". A list of authors is available in Wikipedia. |