Peridynamics　(PD),　as　an　alternative　formulation　of　classical　continuum　mechanics,　is　a　powerful　method　for　predicting　the　spontaneous　initiation　and　propagation　of　cracks.　In　this　paper,　a　unified　elasto-viscoplastic　peridynamics　model,　named　the　Bodner-Partom　theory-based　Peridynamics　(BPPD)　model,　is　proposed　to　describe　the　whole　deformation-damage-fracture　process　for　both　brittle　and　ductile　materials　under　impact　loadings.　It　defines　the　bond-wise　elasto-viscoplastic　deformation　by　incorporating　the　Bodner-Partom＇s　(B-P)　constitutive　theory　into　the　ordinary　state-based　PD　framework.　In　BPPD　model,　the　bond　deterioration　is　introduced　as　an　intrinsic　variable　coupled　with　the　modified　B-P　theory　and　the　bond　fracture　is　realized　by　the　critical　bond　stretch　model.　The　proposed　BPPD　model　permits　the　natural　development　of　plastic　deformation　and　material　deterioration,　which　shares　the　same　vision　as　PD　theory.　Equipped　with　the　elastic　short-range　force　contact　model,　the　present　study　further　investigates　the　modelling　capacity　of　the　BPPD　model　under　various　impact　loadings.　Simulations　for　brittle　drop-ball　test,　Taylor　impact　test　and　ballistic　penetration　test　show　a　good　agreement　between　numerical　results　and　experiment　data.　The　proposed　BPPD　model　can　accu-rately　capture　the　whole　deformation　processes　of　various　impact　fractures　and　thus　contribute　a　new　diversity　to　the　development　of　PD　theory　and　a　new　perspective　to　the　understanding　of　material　fracture　mechanism.