The　dynamic　fracture　of　a　thin-walled　structure　that　is　mainly　due　to　impact　and　explosive　loading　is　studied.　Use　is　made　of　a　meshless　SPH　shell　formulation　based　on　Mindlin-Reissner＇s　theory.　The　formulation　is　an　extension　of　the　continuum-corrected　and　stabilized　SPH　method　allowing　a　thin　structure　to　be　modelled　using　only　one　particle　characterizing　the　mean　position　of　the　shell　surface.　Fracture　is　based　on　an　effective　criterion　similar　to　that　of　the　visibility　method.　Four　numerical　examples　are　studied　among　which　tearing　of　pre-notched　plates,　fracture　due　to　impact　loading　and　dynamic　fracture　of　cylindrical　shells.