Battering ram vs metallic door

[tyFlow]

The metal bending can be achieved with a typical tyParticleSkin/PhysX setup. You can find those in the official example files. The wood splintering/cracking would just be a regular Voronoi fracture sim with the chunks initially bound together but separable by breaking forces. To get thin wood splinters, you'll want to scale the voronoi slice planes along the Z axis. Settings for doing that are in the Voronoi Fracture operator.