VoxelSim FEA – Linear FEA：Blender 建模插件

VoxelSim FEA runs a real linear-elastic finite element analysis on any closed mesh, straight inside Blender. Pick the part, mark its supports and loads, choose a material, and solve — no external FEA package, no export/import round-trip.

Real material values. Four built-in isotropic presets (structural steel, structural aluminum, ABS, PP) plus a Custom slot for your own datasheet numbers. Stiffness is entered in GPa, yield strength in MPa — matching how material datasheets are normally quoted — and the solver reports actual von Mises stress in MPa and displacement in mm, not a unitless placeholder.

Four ways to look at the result, all built from the same solve and kept side by side in a "VoxelSim FEA Results" collection so you can flip between them instantly without re-solving:

• Von Mises stress, mapped onto the part's own surface
• Displacement magnitude, same surface mapping, in millimeters
• Safety factor (yield ÷ von Mises stress), so you can see at a glance where the design is closest to yielding
• A 3D voxel cross-section with a Geometry-Nodes clip plane you can drag through the part to inspect internal stress

An on-screen color-scale legend is drawn directly in the viewport so the color mapping is never a guess.

Boundary conditions are just mesh objects: drop a small mesh where the part is held (a support, with per-axis X/Y/Z locking for rollers), another where a load acts (a real force vector in Newtons), and VoxelSim FEA voxelizes the part and assembles the model automatically.

Compute backend: Auto (recommended) or CPU, plus multi-process CPU . The matrix-free conjugate-gradient solver core is shared with BlendTopo(our topology-optimization add-on) — proven on real hardware there, adapted here for a single, absolute-value linear solve instead of an iterative relative-shape one.

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