Hi,
As I had mentioned before the mass doesn’t appear to be working fully in UE4 for DMs. I’ve entered the bug UE-5642. Without being able to set this you will probably not see the results you want. You may be able to use a radial force and place several around the top so that when it fractures it pushes away from that area to fake an effect. Just set the radial forces bottom half to be at the top. It’s not the best result but could probably help.
As far as tutorials go, it’s just a matter of looking at the documentation provided via the PhysX Labs Help Menu. A lot of the settings in there are carried over to UE4 and can be explained. We also have the doc that explains the properties here for reference in UE4: https://docs.unrealengine.com/latest/INT/Engine/Physics/Destructibles/DestructibleProperties/index.html.
The best way to learn the settings is to make a test map and start adjusting settings to see what affects what. This is where I started and I have a test level that is nothing but different setups and tests that I’ve experimented with during my with destruction meshes. Anytime I need to check something I open this map and test different settings. I would imagine it would be very hard to setup a series of videos going through trying to demonstrate every setting, but not impossible. Some of these need to be used in conjunction with other settings and really get specific results.
I will pass along the information for destructible video tutorials to our Docs team, but in the mean I believe the Nvidia documentation( developer.nividia.com via PhysXLabs), tutorials (https://developer.nvidia.com/apex-destruction-physxlab-tutorials), and the in-editor tutorials that can be accessed via the tutorials button next to the minimize button will be the best source of information aside from testing different setups manually.
Tim