Constitutive modelling of the mechanical response of a polycaprolactone based polyurethane elastomer: Finite element analysis and experimental validation through a bulge test
| Autor: | Michael T. Heitzmann, Patricia Maria Frontini, Asanka P. Basnayake, Nahuel Rull |
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| Rok vydání: | 2020 |
| Předmět: |
Digital image correlation
Materials science Applied Mathematics Mechanical Engineering 02 engineering and technology Experimental validation 021001 nanoscience & nanotechnology Finite element method Polyurethane elastomer Stress (mechanics) chemistry.chemical_compound 020303 mechanical engineering & transports 0203 mechanical engineering chemistry Mechanics of Materials Bulge test Modeling and Simulation Polycaprolactone Cyclic loading Composite material 0210 nano-technology |
| Zdroj: | The Journal of Strain Analysis for Engineering Design. 56:206-215 |
| ISSN: | 2041-3130 0309-3247 |
| Popis: | The mechanical behaviour of a high performance polycaprolactone based polyurethane elastomer (PCL) up to large strain levels, cyclic loading and equibiaxial stress has been assessed. The PCL can be categorised as a rubber-like material, thus, showing nonlinear stress-strain behaviour. The materials elastic network is based on a high molecular weight PCL polyol which gives the material its elastomeric behaviour similar to polyurethanes. In this work, mechanical testing capturing the major features of the stress-strain curve under different loading conditions is performed. Both, uni-axial loading-unloading curves and bulge test are thoroughly studied through the addition of digital image correlation (DIC) to measure the strain field. Results show the presence of hysteresis and loading configuration dependence. Then, two well-known hyperelastic constitutive models, the Arruda-Boyce eight-chain and Bergström-Boyce, were fitted to the uni-axial monotonic and cyclic test data and compared to the bulge test experimental results through finite element analysis (FEA) in Abaqus. |
| Databáze: | OpenAIRE |
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