To　explore　the　wide-frequency　damping　and　vibration-attenuation　performances　in　the　application　of　aerospace　components,　the　cylindrical　sandwich　shell　structure　with　a　gradient　core　of　entangled　wire　mesh　was　proposed　in　this　paper.　Firstly,　the　gradient　cores　of　entangled　wire　mesh　in　the　axial　and　radial　directions　were　prepared　by　using　an　in-house　Numerical　Control　weaving　machine,　and　the　metallurgical　connection　between　skin　sheets　and　the　gradient　core　was　performed　using　vacuum　brazing.　Secondly,　to　investigate　the　mechanical　properties　of　cylindrical　sandwich　shells　with　axial　or　radial　gradient　cores,　quasi-static　and　dynamic　mechanical　experiments　were　carried　out.　The　primary　evaluations　of　mechanical　properties　include　secant　stiffness,　natural　frequency,　Specific　Energy　Absorption　(SEA),　vibration　acceleration　level,　and　so　on.　The　results　suggest　that　the　vibration-attenuation　performance　of　the　sandwich　shell　is　remarkable　when　the　high-density　core　layer　is　at　the　end　of　the　shell　or　abuts　the　inner　skin.　The　axial　gradient　material　has　almost　no　influence　on　the　vibration　frequencies　of　the　shell,　whereas　the　vibration　frequencies　increase　dramatically　when　the　high-density　core　layer　approaches　the　skin.　Moreover,　compared　to　the　conventional　sandwich　shells,　the　proposed　functional　grading　cylindrical　sandwich　shell　exhibits　more　potential　in　mass　reduction,　stiffness　designing,　and　energy　dissipation.　©　2023　China　Ordnance　Society