Lineárisan rugalmas anyagmodell pontosságának vizsgálata poliamid modellezésekor optikai mérőrendszer segítségével
Investigating the accuracy of the linear elastic material models when modelling PA6 using an optical measurement system
Keywords:
finite element analysis, digital image correlation, material model fitting, /, végeselemes szimuláció, digitális képkorreláció, anyagmodell illesztésAbstract
For the modelling of polymers in the elastic region, many different material models are used. The simple linear elastic material model is one of these models however, it is only able to simulate the load response of these materials in the small-strain region. This work investigates the accuracy of the linear elastic material model when modelling polyamide (PA6) under quasi-static uniaxial tension. The finite element results were then compared to laboratory measurements, which were performed using the GOM Aramis full-field optical measurement system, thus the accuracy of the material model could be determined.
Kivonat
Műanyagok rugalmas zónában történő modellezésére több különböző anyagmodell használata ismert. A lineárisan rugalmas anyagmodell is ezek közé tartozik, azonban csak egy bizonyos nyúlásértékig képes ezen anyagok terhelésre történő válaszát leírni. Jelen cikkben a lineárisan rugalmas anyagmodell pontosságát vizsgáltuk poliamid (PA6) kvázi-statikus egytengelyű húzásra történő modellezésekor. A végeselemes vizsgálatok eredményeit a GOM Aramis teljes-mező optikai mérőrendszer által nyújtott eredményekkel vetettük össze, így megállapítottuk a modell pontosságát.
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