$Assignkpstrain is to privde the strain information of each layer
The format is
$Assignkpstrain ϵxx ϵyy ϵzz ϵyz ϵzx ϵxy ϵxx ϵyy ϵzz ϵyz ϵzx ϵxy ϵxx ϵyy ϵzz ϵyz ϵzx ϵxy ... ...