Shaun Foster's video: Unreal 4 Destructible Mesh Tutorial with resource links below

FYI: Unreal in 4.18 (and higher) ... go to Settings / Plug-Ins / Turn on Apex Destruction! (restart Unreal) *phew* all set! Unreal 4 Destructible Mesh Tutorial 01:20 Fracture and add particle & sound effects 02:54 Physics destruction 03:42 Radial force actor 05:20 Add radial force to player gun 08:45 Define structural support LINKS: Destructibles Content Examples https://docs.unrealengine.com/latest/INT/Resources/ContentExamples/Destructables/ Nvidia Game Works PhysX https://developer.nvidia.com/gameworks-physx-overview APEX Destruction https://developer.nvidia.com/apex-destruction-physxlab-tutorials Troubleshooting Guide https://wiki.unrealengine.com/Destructible_Troubleshooting_Guide Tesla’s Destructible Tutorial(s) https://www.youtube.com/watch?annotation_id=annotation_1549553865&feature=iv&src_vid=QIvcTwlosMQ&v=1aSdzw5zPtg Parallels & Other Thoughts: PHAT https://docs.unrealengine.com/latest/INT/Engine/Physics/PhAT/