Hi,
I am trying to numerically model the viscoelastic properties of nanocomposites through the software DIGIMAT.
For this, the software ask me for the Prony series as input. I performed DMA in the plain Epoxy sample and obtained the Loss and Storage Modulus as a function of temperature and time. I've been trying to obtain from this curve the Prony series, however, I haven't succeeded. The literature in the majority is how to obtain the Prony series from the frequency but my frequency was kept constant in the experimental data.
How is it possible to obtain the Prony series from the time or temperature domain?
hi.,
refer this link:
http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-77432020000200104
To obtain a Prony series from experimental data in the DMA temperature domain for numerical modeling of viscoelastic properties in nanocomposites using DIGIMAT software, you can follow these steps. First, collect the experimental data from dynamic mechanical analysis (DMA) measurements, including temperature-dependent storage modulus (G') and loss modulus (G'') values. Next, preprocess the data by removing any noise or outliers. Then, fit the data to a Prony series model, which represents the viscoelastic behavior of the material. This involves finding the optimal set of Prony parameters that best match the experimental data. You can use regression techniques or optimization algorithms to achieve this. Once the Prony parameters are determined, input them into the DIGIMAT software to create a numerical model that accurately represents the viscoelastic properties of the nanocomposites in the DMA temperature domain.
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