Hi Antonio,
"Spot" refers to the position through the ply thickness where the results will be shown (top, mid, bottom), and "Component" specifies the direction of the stress component across which the stress results are intended to be plotted. For more information, please refer to the Ansys Help document - 2.1.19.3. Solution Plots (ansys.com)
Hope this helps!
Regards,
Asitang
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