Cyclic Thermomechanical Loading of Epoxy Polymer: Modeling with Consideration of Stress Accumulation and Experimental Verification

Developing a viscoelastic model for the cyclic thermomechanical loading of thermosetting polymers is the main goal of this study. The model includes memory for residual thermal stresses and can consider stress accumulation across many loading cycles. By considering stress accumulation, we can improv...

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Bibliographic Details
Published in:Polymers 2024-04, Vol.16 (7), p.910
Main Authors: Mishnev, Maxim, Korolev, Alexander, Zadorin, Alexander, Astashkin, Vladimir
Format: Article
Language:English
Subjects:
Accumulation
Composite materials
Cooling
Cyclic loads
Epoxy resins
Manufacturers
Modelling
Polymer industry
Polymers
Polyvinyl chloride
Residual stress
Stress state
Temperature
Thermal stress
Thermomechanical analysis
Verification
Viscoelasticity
Viscosity
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Summary:Developing a viscoelastic model for the cyclic thermomechanical loading of thermosetting polymers is the main goal of this study. The model includes memory for residual thermal stresses and can consider stress accumulation across many loading cycles. By considering stress accumulation, we can improve predictions and understand how thermosetting polymers' stress-strain state changes under cyclic thermomechanical loading. This approach was validated through experimental verification to ensure its applicability in practical engineering scenarios. The experiment showed that the thermosetting polymer can accumulate stress during cycles of heating and mechanical loading during use. The results of the modeling and experiment are compared. The results have led to corrections in the way this model is applied to thermosetting polymers like the epoxy resin in this study. The corrected results matched well with the experimental measurements of stress under cyclic thermomechanical load, with a difference of only 1 to 6%.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym16070910