Fig. 1.

Flowchart of proposed multi-step optimization procedure for the synthetic model. In Step 1, all the parameters are estimated using both the volume and strain data, followed by (Step 2) an estimation of $a_{\text{f}}$ and $b_{\text{f}}$ using the volume data only. Similarly in Step 3, $a_{\text{s}},b_{\text{s}},a_{\text{fs}},b_{\text{fs}}$ are estimated using the strain data only. In Step 4, the remaining parameters $a,b,a_{\text{f}},b_{\text{f}}$ from Step 3 are optimized using both the volume and strain data