Abstract
Abstract. Experimental data are reported on polypropylene/clay nanocomposites in uniaxial
cyclic tensile tests at room temperature (oscillations between maximum strains and the zero
minimum stress with maximum strains increasing monotonically with number of cycles). Observations
reveal fading of memory of deformation history: when two samples are subjected to
loading programs that differ along the first n ¡ 1 cycles and coincide afterwards, their stress–
strain diagrams coincide starting from the nth cycle. Constitutive equations are developed in
cyclic viscoelasticity and viscoplasticity of nanocomposites, and adjustable parameters in the
stress–strain relations are found by fitting the experimental data. Ability of the model to predict
the fading memory phenomenon is confirmed by numerical simulation.
cyclic tensile tests at room temperature (oscillations between maximum strains and the zero
minimum stress with maximum strains increasing monotonically with number of cycles). Observations
reveal fading of memory of deformation history: when two samples are subjected to
loading programs that differ along the first n ¡ 1 cycles and coincide afterwards, their stress–
strain diagrams coincide starting from the nth cycle. Constitutive equations are developed in
cyclic viscoelasticity and viscoplasticity of nanocomposites, and adjustable parameters in the
stress–strain relations are found by fitting the experimental data. Ability of the model to predict
the fading memory phenomenon is confirmed by numerical simulation.
| Original language | English |
|---|---|
| Title of host publication | 6th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2012 |
| Number of pages | 15 |
| Publication date | 2012 |
| Pages | 6130-6144 |
| ISBN (Print) | 978-395035370-9 |
| Publication status | Published - 2012 |
| Event | European Congress on Computational Methods in Applied Sciences and Engineering 2012 - Vienna, Austria Duration: 10 Sept 2012 → 14 Sept 2012 |
Conference
| Conference | European Congress on Computational Methods in Applied Sciences and Engineering 2012 |
|---|---|
| Country/Territory | Austria |
| City | Vienna |
| Period | 10/09/2012 → 14/09/2012 |