Stress limit determination for a continuous system of thermoplastic elastomer [Determinación de los Límites de Esfuerzo para un Sistema Continue de Elastómero Termoplástico]

The results of a study on the simulation of the uniaxial mechanical deformation process of the thermoplastic elastomer polyurethane-diacetylene (PU-PDA)-poly(tetramethylene oxide) (POTM) [HDI-5,7-1000], an important complex polymer of the type thermoplastic elastomer, with chromo-mechanical properties. The simulation involved the generation of true stress calculation as a function of temperature. First, a constitutive equation that described the visco-elastic states of the system was obtained and solved using finite elements. The simulation results indicated good correlation with experimental data, so the constitutive model and the numerical calculations were considered adequate for the purpose of this study.

Deformation; Finite elements; Simulation; Stress limit; Thermoplastic elastomers Computer simulation; Correlation methods; Deformation; Finite element method; Polymers; Stresses; Thermoplastics; Complex polymers; Constitutive equations; Stress limits; Uniaxial deformation; Elastomers

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