Hello,
APEX destruction in UE4 supports apply damage and impulse from a different direction at runtime, but APEX doesn't support mobile devices. I know Houdini can create playback destruction animation, but it is static. Is it possible to create a fractured mesh in Houdini, each fragment is a physic body in ue4?

I think you could make that work. Though I am not quite sure I understand the question. I think you could make an HDA that will generate fractured individual meshes with collisions and settings to run real-time physics in Unreal (on play). But I don't know whether that will do the trick for you.

https://www.sidefx.com/docs/unreal/_attributes.html#AttributesGroups [www.sidefx.com]
I think you could set unreal_uproperty_ so that the mesh would be moveable and physics simulated by default. I haven't tried though. Please come back with your findings.