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This is a structural simulation of the collapse of the Arecibo Observatory in 2020. The simulation implements the three major failure events which ultimately led to the progressive failure causing the platform to fall into the dish. The simulation is based in part on actual physical data such as mass and strength for the larger components, and in part on plausible estimations. What appears to be multiple simulations at different points in time is actually one large global simulation. Deviations from reality are to be expected due to the fact that the simulation software runs completely autonomous, only the main initial failure points have been triggered by a predefined script. Nothing is animated by hand. Failure history: 2020-08-10 Tower 4 auxiliary main cable north comes loose from the socket (#301) 2020-11-06 Tower 4 main quadruple cable south broke, one of four (#101) 2020-12-01 Tower 4 main cable total failure and collapse Some stats for nerds: Base 3D model - 1.87 million polygons Simulation model - 12,900 elements + 136k constraints Simulation time - ~16 h Credits: Simulation & video by Kai Kostack http://kostackstudio.de Observatory 3D model provided by Dr. Rhys Taylor http://www.rhysy.net/ Additional data obtained from Phil Perlialt's website https://naic.nrao.edu/arecibo/phil/ Music: Kai Engel - Run (CC BY) Made with Blender + BCB + Fracture Modifier https://www.blender.org/ https://inachuslaurea.wordpress.com https://blenderartists.org/t/custom-build-blender-fracture-modifier/616502 The "BCB" structural simulation software has been developed at the Laurea University of Applied Sciences, Finland. Written within the scope of EU Inachus FP7 Project (607522): Technological and Methodological Solutions for Integrated Wide Area Situation Awareness and Survivor Localisation to Support Search and Rescue (USaR) Teams Island Observatory Failure
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