Create the area. Before meshing run the following code:

ET,1,SHELL181

n=2 ! index in the power law;  0

you have two possibilities, one is to do a different layer with diffrent proprities for eatch one , the second is to do a macro witch able to change the elements material

god luck

Create the area. Before meshing run the following code:

ET,1,SHELL181

n=2 ! index in the power law;  0

https://www.researchgate.net/publication/316966052_FGM_Modelling_using_Dummy_Thermal_Loads_Applied_with_ANSYS_APDL

Article FGM Modelling using Dummy Thermal Loads Applied with ANSYS APDL

FULL TEXT Available at:

http://dergipark.gov.tr/josisat/issue/33131/339251

This 'do' program is good for when the material variation in one direction but if the material is required to vary in Two directions then how to modify 'do' codes