Here is the solution. Perform simulation and then calculate the distance between inner and outer nodes where make sense. Calculating the distance between corresponding inner and outer nodes is a valid and efficient way to determine the wall thickness of a plastic bottle in Abaqus CAE following a blow molding simulation. During model creation in Abaqus CAE, ensure you have properly defined element sets for the inner and outer surfaces of the bottle geometry. These element sets will group the nodes that lie on the respective surfaces. Abaqus CAE offers options to calculate the distance between nodes. For each node on the outer surface, you can subtract the corresponding inner surface node's coordinates (X, Y, and Z) to obtain the distance vector. The magnitude of this vector will represent the wall thickness at that particular location. At post processing module, you can then interpret results.
After running the blow molding simulation, you can use the Plyshell feature in Abaqus CAE to create a shell representation of the bottle geometry.
In the Visualization module, you can use the Contour plot option to visualize the wall thickness distribution across the bottle surface. This will show you the variations in wall thickness.
You can also extract the nodal thickness values by selecting the Nodal output variable for Shell Thickness and create a report or spreadsheet to analyze the thickness data in more detail.
Alternatively, you can use the Query tool in Abaqus CAE to probe the thickness at specific locations on the bottle surface and understand the local variations.