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The Solid Fracture SOP divides up the geometry into pieces, each of which consists of primitives that cannot be broken apart by the finite element solver. The primitives are represented by a primitive attribute
fracturepart that has a distinct number for each unbreakable part. The geometry with the
fracturepart attribute can then be used as the Initial Geometry on the FEM Solid Object.
Doing finite-element fracturing sims without
fracturepart is likely to result in breakage of individual tets. It is recommended that you use the Solid Fracture asset or that you create a
fracturepart attribute manually in order to specify the smallest pieces that should stay together.
This asset works for polygons as well as tetrahedrons. This means that the asset can not only be used for fracturing Solid Object sims, but also for fracturing Cloth Object simulations (tearing).
When Split Primitives is enabled, the geometry will be split into separate pieces by the
fracturepart attribute. Along with the Original and New point groups, this option can be used to pre-fracture geometry for welding back together in the Vellum Solver.
This specifies the scale of the fracture parts. The larger this parameter, the larger the fracture parts will be.
This allows you to shift the position of the pattern that is used to create the parts.
This allows you to see the parts as colors.
Split the primitives by the
fracturepart attribute, creating separate pieces of geometry.
Original Point Group
A point group to store all the original input points before splitting.
New Point Group
A point group to store any points created in the splitting process.