Material Properties: Glass, Metal, and Fabric Impact Behavior

Testing differential material physics under identical impact conditions

physics

materials

impact

material-differentiation

Logic Score

8.8/ 10

88%

Dimensions

glass fragility9.1/10

metal rigidity8.8/10

fabric deformation8.9/10

consistency across materials8.7/10

TL;DR

Identical impact forces hit glass, metal, and fabric spheres to verify the model renders distinct material responses instead of one generic bounce.

Key takeaways

→Glass shatters radially; metal elastically rebounds; fabric absorbs and slowly recovers.
→No cross-material contamination—each sphere behaves according to its own properties.
→Energy dissipation profiles match expected fragility, rigidity, and compliance per material.

Video

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// Logic Validation Assertions

// Material Behavior
glass_fragility: 9.1/10
metal_rigidity: 8.8/10
fabric_deformation: 8.9/10
consistency_across_materials: 8.7/10

•Test Design: Three identical impact scenarios (same force, same angle, same camera) applied to three different materials. Isolates material-specific response while controlling for external factors. Each material subjected to 5 m/s impact force from 1 meter height.
•Evaluation Framework: Material property matrix tracking fragility (does material break?), rigidity (how much deformation?), elasticity (does it return to original state?), energy dissipation profile (how impact energy is transformed).
•Comparison Method: Reference rendering for each material using accurate physics properties in Blender. Scores based on correspondence between generated behavior and ground-truth physics simulation.

•Glass Impact (Score: 9.1/10): The glass sphere shatters into realistic radial fragments with appropriate size distribution. Fragment trajectories follow ballistic paths. Crack patterns show realistic stress concentration. Minor deviations from perfect physics (slight overdispersion of small fragments) result in -0.9 points.
•Metal Impact (Score: 8.8/10): Steel sphere exhibits elastic collision with small localized deformation at impact point. Deformation recovers rapidly (within 3 frames) indicating material elasticity. Energy transfers primarily to kinetic motion rather than permanent deformation. Rebound angle matches incident angle to within 2 degrees.
•Fabric Impact (Score: 8.9/10): Cotton sphere absorbs impact energy through compliance. Visible compression at contact point recovers gradually over 8-12 frames rather than elastically. Energy dissipation profile matches expected behavior for porous materials. Secondary fabric fibers show subtle disturbance consistent with material structure.
•Consistency Across Materials (Score: 8.7/10): The three materials respond distinctly despite identical impact conditions, validating that the model maintains distinct material property representations. Cross-material contamination (glass-like behavior in metal, fabric-like behavior in glass) is absent.