：　A　new　type　of　displacement-amplified　torsional　damper（DATD）　can　realize　composite　energy　dissipation　by　the　shear　hysteresis　deformation　of　lead　core　and　high　damping　rubber.　This　paper　further　analyzed　the　working　principle　and　energy　dissipation　performance　of　DATD.　The　seismic　performance　of　frame　beam-column　joints　with　this　damper　was　studied.　The　ABAQUS　software　was　used　to　establish　the　finite　element　model　of　the　DATD，the　ordinary　cast-in-place　joint　and　the　joint　equipped　with　the　DATD　respectively.　By　comparing　the　finite　element　analysis　results　of　the　ordinary　cast-in-place　joint　with　the　previous　test　results，the　hysteresis　curves　of　the　two　were　in　good　agreement，thus　verifying　the　effectiveness　of　the　numerical　simulation　method.　Furthermore，the　energy　dissipation　performance　of　ordinary　joints　and　joints　equipped　with　DATD　under　cyclic　loads　were　compared，and　the　influence　of　DATD　on　the　seismic　performance　of　beam-column　joints　was　analyzed.　The　research　results　show　that　DATD　joints　have　full　hysteretic　curves　and　superior　energy　dissipation　capacity，which　can　significantly　delay　joint　cracking，and　protect　beam-column　joints.　©　2023　Tongji　University.　All　rights　reserved.