Rigid Body World

Reference

Panel:

Scene ‣ Rigid Body World

The Rigid Body World is a group of rigid body objects, which holds settings that apply to all rigid bodies in this simulation.

When you add rigid body physics to an object, primary there is created a group of objects with default “RigidBodyWorld” name. Rigid body objects automatically are added to this group when you add rigid body physics for them. You can create several Rigid Body World Collections and allocate the rigid body objects with the Collections panel.

Rigid body objects and constraints are only taken into account by the simulation if they are in the collection specified in the Collection field of the Rigid Body World panel in the Scene tab.

Settings

Rigid Body World

Enable/disable evaluation of the rigid body simulation based on the rigid body objects participating in the specified group of Rigid Body World.

Remove Rigid Body World

Remove rigid body simulation from the current scene.

Collection

Containing rigid body objects participating in this simulation.

Constraints

Containing rigid body object constraints participating in the simulation.

Simulation quality and timing settings:

Speed

Can be used to speed up/slow down the simulation.

Split Impulse

Enable/disable reducing extra velocity that can build up when objects collide (lowers the simulation stability a little so use only when necessary). Limits the force with which objects are separated on collision, generally produces nicer results, but makes the simulation less stable (especially when stacking many objects).

Substeps Per Frame

Number of simulation steps taken per frame (higher values are more accurate but slower). This only influences the accuracy and not the speed of the simulation.

Solver Iterations

Amount of constraint solver iterations made per simulation step (higher values are more accurate but slower). Increasing this makes constraints and object stacking more stable.

Rigid Body Cache

Reference

Panel:

Scene ‣ Rigid Body World ‣ Cache

The Cache subpanel specifies the frame range in which the simulation is active. Can be used to bake the simulation.

Start/End

First and last frame of the simulation.

Bake

Calculates the simulation and protects the cache. You need to be in Object Mode to bake.

Delete Bake

Active after the baking of simulation. Clears the baked cache.

Calculate to Frame

Bake physics to current frame.

Current Cache to Bake

Bake from Cache.

Bake All Dynamics

Bake all physics.

Delete All Bakes

Deletes all baked caches of all objects in the current scene.

Update All to Frame

Update cache to current frame.

If you have not saved the blend-file, the cache is created in memory, so save your file first or the cache may be lost.

Rigid Body Field Weights

Reference

Panel:

Scene ‣ Rigid Body World ‣ Field Weights

As other physics dynamics systems, rigid body simulation are also influenced by external force effectors.