Regarding　to　sandwich　plates　and　shells　with　partially　smart　constrained　layer　damping　(SCLD)　treatment,　based　on　the　zig-zag　hypothesis,　an　electromechanical　coupling　dynamic　finite　element　(FE)　model　is　derived,　and　realized　the　accurate　calculation　of　frequency　and　loss　factor.　A　eight-node　element　with　quadratic　shape　function　is　adopted　for　FE　modeling,　and　each　node　with　7　mechanical　degrees　of　freedom　(DOFs),　considering　the　complex　elastic　modulus　of　damping　layer.　Through　calculation　and　simulation　of　an　example　from　the　literature　to　verify　the　model＇s　accuracy.　The　effects　of　coverage　percentage　of　SCLD　and　curvature　of　structure　are　investigated.　This　study　provides　references　for　vibration　reduction　and　optimization　design　of　sandwich　smart　structures.　©　2021　IEEE.