Results: The resulting coefficient of determination R 2 (R squared) for most curves was near 0.999, indicating that an appropriate fitting function was selected for the description of the experimental stress–stretch curves. Conclusions: The stress–stretch behavior of cani...
The hysteresis, defined as the fraction of the membrane strain energy between the loading and unloading curves tension-areal stretch curves, was low (approximately 12%) and did not vary with strain rate. The results of the present work indicated that MVAL tissues exhibit complete strain rate ...
It is observed that all stress based curves can be used very well to describe material formability of the examined steel compared to the strain based FLC. The strain based FLC depend on forming history and strain paths change. In the other hand, the stress based FLC do not depend on these...
It was found that the true stress–strain curves had the same trend in three directions, and the difference was not particularly significant. So, the average value of the stress at a certain strain in each direction was the final measured data of stress-strain. Figure 1. Measured stress–...
We can obtain the constitutive model parameters through the following two steps: performing mechanical tests of the sample and fitting the experimental stress–strain curves with the strain energy function. However, since one parameter combination cannot cover the mechanical behavior of different poro...