Hellow guys, Welcome to my website, and you are watching WTC Simulation - World Trade Center Case Study - Blender Demolition (Demo 3). and this vIdeo is uploaded by Kostack Studio at 2011-09-05T17:11:53-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
| Name | WTC Simulation - World Trade Center Case Study - Blender Demolition (Demo 3) |
| Video Uploader | Video From Kostack Studio |
| Upload Date | This Video Uploaded At 06-09-2011 00:11:53 |
| Video Discription | Demo video of the development of the Demolition feature for Blender 2.5x/2.6. The main purpose of this video is to prove the capabilities of my physics system development, if any. It is not intended to prove or disprove 9/11 conspiracy theories. I'm deleting comments that include hate speech, so you better think twice before starting an argument about the reasons of 9/11 here. Instead, I recommend to read a neutral source like: https://en.wikipedia.org/wiki/9/11_conspiracy_theories to get some pros and cons instead of watching videos on YouTube like mine to come to a realistic conclusion about what has happened that day. This test case scenario needed 10 minutes per frame to calculate geometry deformations and additional 5 minutes to render the image. The test system was an Intel Core i7-980X Extreme Edition with 3,33 GHz, 12 virtual cores and 12 GB of RAM. Check here for a slowed down version: http://www.youtube.com/watch?v=eh3qUmNxC6E WTC7 Simulation: https://www.youtube.com/watch?v=MSlIFXw3EGg For more information see: http://blenderartists.org/forum/showthread.php?t=207866 http://kaikostack.com FAQ: Q: Is the core missing in your model? A: No, it's just hardly visible because of the low camera angle. Q: Why did the tower not tip over? A: If one part of the supporting structure fails then a progressive process starts which makes neighbor supports failing as well due to increased load they have to bear and so on. This happens within seconds so that the building has literally no time to tip over. The larger a building the more immovable is it due to inertia. Q: But I saw lots of demolition videos where high buildings tipped over, what now? A: Reinforced concrete buildings with solid load bearing walls are not comparable to lightweight steel structures like the Twin Towers were. Also most certainly none of them were even half as high. Q: The debris obviously didn't choose the way of least resistance by falling through the still intact structure, how is this even possible? A: With the debris mass accumulating and accelerating over time also the momentum increases. It increases much faster than the resistance of the still intact structure could slow it down. In this case also the energy required to redirect the momentum to a path of less resistance would be much greater than keeping the original motion path throughout the intact structure. So it depends on the direction of momentum if the path of least resistance would actually be the most energy efficient way to go. Q: What about Newton's third law? The collapse doesn't match up with my school physics calculations. A: Classical Mechanics describes the behavior of idealized non-deforming objects, but steel isn't. In fact no known material in the universe is. You cannot reduce complex problems to simple formulas without iterative process, that's why we use computer simulations to understand the behavior of building collapses. Q: Where's the rest of the building collapsing? A: The whole building was basically too large at the time. I remember this to simulate about a day per run and the simulation time increases exponentially with increasing element count. Waiting a month per simulation to finish was just out of scope. Q: I don't see my comment (anymore), do you censor? A: No. YouTube automatically marks comments as possible spam if they contain certain keywords such as bad language, links to unknown websites, or when they basically got reported by other users. Then I need to manually accept them in order to make them visible again. I usually do this for most marked comments periodically and sometimes it takes a while until I see them. |
| Category | Film & Animation |
| Tags | WTC | collapse | Simulation | Purdue | NIST | FEMA | FEM | wtc simulation | world trade center | tower | building | twin towers | AfE-Turm | Uni-Hochhaus | progressive collapse | pancake theory | Blender (Software) | conspiracy | thermite | truth | Finite Element Method | Demolition | New York | steel building | fracturing | fracture | shattering | shatter | digital molecular matter | DMM | engine | bullet | physics | Physics Simulation | Dynamica | WTC 1 | WTC 2 | The Walk | John Hancock Center | kai kostack |
