----- I created a new analysis model. Shell elements were created from the received CAD data. The panels are independent and do not need to share nodes. First I cleaned the edge of CAD data. If you do not do this correctly, a mesh with extremely small dimensions will be created. I made Mesh next. I fixed the mesh confirming mesh quality such as minimum size and angle.
The shell element aligns the direction of the normal vector. I gave mesh properties such as thickness. That is all for today. Generally, the model creation procedure of the structure CAE is as follows.
CAD data cleaning → mesh creation → mesh quality check → mesh modification → element property creation → material model creation → assignment of properties and materials to the mesh → load condition, constraint condition, creation of contact condition → output data setting