computer simulation of WTC attacks by Perdue university

Pardalis

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I'm sorry if this has already been discussed, I just ran into it while listening to the "skeptical Guide to the Universe" podcast.

http://news.uns.purdue.edu/UNS/html4ever/2006/060911.Sozen.WTC.html

Researchers at Purdue University have created a simulation that uses scientific principles to study in detail what likely happened when a commercial airliner crashed into the World Trade Center's North Tower on Sept. 11, 2001.
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It has all the links to the study.
 
Architect said:
Good stuff. Especially when they explain how complex it all is to model. Doubtless the CT mob will hand wave it all away and go back to analysing pictures. Badly.
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The deniers can also put some effort into it and create their own computer model. I think the map editor for Counter Strike will prove to come in handy.
 
Santiago Pujol, an assistant professor of civil engineering, worked with the researchers to develop experimental data to test the accuracy of the simulation by using an "impact simulator" to shoot 8-ounce beverage cans at high velocity at steel and concrete targets at Purdue's Bowen Laboratory. These data enabled the researchers to fine tune and validate the theoretical model for the simulation.

"We created a mathematical model of the beverage can and its fluid contents the same way we modeled the airplane, and then we tested our assumptions used to formulate the model by comparing the output from the model with that from the experiment," Sozen said.
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They did research with a beer cannon?
more beer cannon.
 
Wow, amazing article. It'd be devestating to the twoofers if they weren't running on pure ignorance already.

"Current findings from the simulation have identified the destruction of 11 columns on the 94th floor, 10 columns on the 95th floor and nine columns on the 96th floor," he said. "This is a major insight. When you lose close to 25 percent of your columns at a given level, the building is significantly weakened and vulnerable to collapse."
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Sadly, Purdue has already started out on the wrong foot.

Quote from the article:

"The researchers are analyzing how many columns were destroyed initially in the building's core, a spine of 47 heavy steel I-beams extending through the center of the structure, Sozen said."

They've already forgotten to account for the vast amount of invisicrete used in the construction of the core. :)

On a serious note, I look forward to reading more as their future modeling results are published.
 
BTW, Truthseeker123456789, if you're reading this you realize now that your precious "NIST didn't release thier computer models" argument is completely out the window, don't you?

Now that we have a scientifically accurate, publicly available computer model based on actual laboratory tests, all your whining about it is officially over.
 
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Sword_Of_Truth said:
BTW, Truthseeker123456789, if you're reading this you realize now that your precious "NIST didn't release thier computer models" argument is completely out the window, don't you?

Now that we have a scientifically accurate, publicly available computer model based on actual laboratory tests, all your whining about it is officially over.
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Says you.

Now the -them shills are into it as well- crap can commense.
 
Santiago Pujol, an assistant professor of civil engineering, worked with the researchers to develop experimental data to test the accuracy of the simulation by using an "impact simulator" to shoot 8-ounce beverage cans at high velocity at steel and concrete targets at Purdue's Bowen Laboratory. These data enabled the researchers to fine tune and validate the theoretical model for the simulation.

"We created a mathematical model of the beverage can and its fluid contents the same way we modeled the airplane, and then we tested our assumptions used to formulate the model by comparing the output from the model with that from the experiment," Sozen said.
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Mercutio said:
They did research with a beer cannon?
more beer cannon.
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Woah! They did actual experimental research? What a bunch of fraccin' shills!!!!!

Wait, what does shill mean again? Never mind!
 
High-performance computing is essential for the research, Hoffmann said. The computer scientists and engineers have been using the "nano-regatta" computer, an IBM system approximately equivalent to the combined power of 128 personal computers. The computer is operated by Information Technology at Purdue as part of the Network for Computational Nanotechnology, based at Purdue's Discovery Park and supported by the NSF.
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So, even if the truuuutherss demands to have copies of the models were met, they still wouldn't be able to do anything with them. Any bets on how they'd react to that?
 
Bell said:
They did, but the core is made of invisicrete. They modeled it so precise, that even if you look closely, you'll not be able to see it.
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No, in the beginning of that video I linked, the NIST says the core was a hollow steel shaft. How the NIST could make such a gross oversight is beyond me.
 
kevin said:
I find this simulation amazing:
http://www.cs.purdue.edu/homes/cmh/simulation/phase1/image1/10sep02.gif

Watch two columns rip down the center of the plane without snapping. It isn't until the fluid filled wings come into the picture that your really start seeing some damage to the structure.
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I'm not sure if that animation gives an acurate view of what happened at the Pentagon. It suggest that the airplane entered the building 'intact' (like at the WTC) and the wings started to break up inside the building. But looking at the actual damage, I would conclude the wings were crushes at the point of impact.
 
BTW, Truthseeker123456789, if you're reading this you realize now that your precious "NIST didn't release thier computer models" argument is completely out the window, don't you?
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No. Like NIST, Purdue didn't study the collapses either. Even assuming their computer model is accurate, and assuming that this core damage + killer fires lead to local collapse, they do not explain how local collapse can lead to the obliteration of the tower, as observed.

Purdue's timeline was truncated even earlier than NIST's.

A far better use of the time and energy would be to assume a local collapse, and then model how that then leads to the pulverization, the ejection, the molten metal, the collapse times, etc.
 
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