Comparison to Reality: WTC Simulation 2025, Part 1 (South Tower) @KaiKostack

Comparison to Reality: WTC Simulation 2025, Part 1 (South Tower) @KaiKostack

Uploaded November 2025 | Updated September 2026, 6 hours ago

This video presents a technical comparison between selected sequences of the *WTC Simulation 2025, Part 1 (South Tower)* and authentic video material from the same structural event.
The purpose is to visually examine the realism and physical consistency of the simulated sequence under comparable viewing conditions.

The simulation and solver setup are identical to *Part 1*. For full details on geometry, materials, and computation methods, please refer to the original video:
👉 youtu.be/WpHXj62Ylw0

This comparison is part of an independent research project exploring methods of large-scale structure behaviour simulation. It is not affiliated with any official study or investigation.

3D software: Blender — blender.org
Simulation: Bullet Constraints Builder — github.com/KaiKostack/bullet-constraints-builder
Fracture Modifier (custom builds supported) — blenderartists.org/forum/showthread.php?343637-Custom-Build-Blender-Fracture-Modifier

Comparison to Reality: WTC Simulation 2025, Part 1 (South Tower)

$Full Dynamic Fracture in Blender Prototype This video shows for the first time a complete system for dynamic shattering and fracturing simulation in Blender. It uses the crack generation approach I revealed in my most recent videos about arbitrary deformed cell fracture. Dynamic means that no precalculation whatsoever like prefracturing or any other kind of preprocessing of the geometry is being done or required. All destruction is performed on the fly during simulation. You can find the older videos here: https://www.youtube.com/watch?v=QkBxXWGE7t8 https://www.youtube.com/watch?v=grrhs7gvcOo http://kostackstudio.de Tags: Blender (Software), collapse, Simulation, Finite Element Method, Abaqus, Xfem, Demolition, fracturing, fracture, shattering, shatter, dynamic, adaptive, engine, bullet, physics, Physics Simulation, Dynamica, Maya, Cinema4d, 3DS Max, MODO, Thinking Particles, Rayfire, non-manifold geometry, mesh topology, watertight mesh, boolean, next-gen fracture, voronoi cells, cell fracture, rigid body simulation, dynamic fracture, adaptive fracture, dynamic shattering, adaptive shattering, VDB fracture$

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Kostack Studio |

Comparison to Reality: WTC Simulation 2025, Part 1 (South Tower)