Percentage Thickness Calculation for Shells

In HyperView, the existing implementation of thickness calculation is based on strain data available with result file. In the case where the strain data is not available in the results, HyperView is not able to show the percentage change in the thickness. The existing method of calculating the percentage change in thickness using strain is the most generic method and takes away any assumptions on the initial sheet thickness. However in absence of strain data in the result file, HyperView needs to be able to calculate the percentage thickness reduction based on the thickness at the time step 0. The implementation to meet this need is explained below.

LS-DYNA Implementation

In the result data, if strain result data is available then HyperView will use the implemented method and calculate the % thickness reduction and plot the same. In case of missing strain data, HyperView will calculate from thickness at time step 0 and the current time step. HyperView will add label % thickness reduction which is scalar. This needs to be calculated at each step using the formula from the thickness. This is valid for shell elements only.