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Gold9472
06-12-2007, 04:46 PM
Purdue Creates Scientifically Based Animation of 9/11 Attack

http://newswire.ascribe.org/cgi-bin/behold.pl?ascribeid=20070612.120054&time=12%2048%20PDT&year=2007&public=0

Tue Jun 12 12:48:10 2007 Pacific Time

WEST LAFAYETTE, Ind., June 12 (AScribe Newswire) -- Although most Americans believe they know what brought down the World Trade Center twin towers on Sept. 11, 2001, civil engineers are still seeking answers to questions that could save lives in the future.

Structural engineers need to know from a scientific perspective what happened to the buildings during the terrorist attacks in order to prevent future failures. The search for answers continues with the help of a state-of-the-art animated visualization created by researchers at Purdue University.

Christoph Hoffmann, a professor of computer science and director of Purdue's Rosen Center for Advanced Computing, a division of Information Technology at Purdue, says the animation reveals more information than could be conveyed through a scientific simulation alone.

"Scientific simulations restrict us to showing the things that are absolutely essential to the engineer," Hoffmann says. "This gives us a simulation that doesn't deliver much visual information to a layperson. Our animation takes that scientific model and adds back the visual information required to make it a more effective communication tool."

The scientific simulation, the completion of which was announced last September, required several test runs before the researchers were satisfied; the final test run required more than 80 hours of high- performance computing. The simulation depicts how a plane tore through several stories of the World Trade Center north tower within a half-second and found that the weight of the fuel acted like a flash flood of flaming liquid, knocking out essential structural columns within the building and removing fireproofing insulation from other support structures. The simulation used lines and dots to show the aircraft and building during the event.

To develop the new animated visualization, Voicu Popescu, an assistant professor of computer science, developed a translator application that creates a link between computer simulations and computer visualization systems to automatically translate simulation data into a 3-D animation scene.

"This translator is scalable and can be used in other simulations," Popescu says.

The animation can be seen online at http://www.cs.purdue.edu/cgvlab/papers/popescu/popescuWTCVIS07.mov.

In the animation, elements that were not part of the scientific simulation, such as flames and smoke, are clearly rendered, although the visualization does not show the subsequent effects of the fire.

Even though details were added in this animation, Popescu says the visualization was intentionally kept "non-descript" so that they would not be exploitive of the horrific attack.

"For example, on the airplane there are no airline insignia or windows," Popescu says.

Still, Popescu says the visualization has a realism never seen before.

"The crashes and computer models you often see on television are not scientifically accurate," he says. "This provides an alternative that is useful to the nonexpert but is also scientifically accurate, so it provides a more realistic picture of the event."

The visualization begins with a Google Earth map of lower Manhattan as it appeared on Sept. 11, 2001. The video then shows the damage caused by the aircraft as it hit the north tower, follows the disintegrating plane through the interior, and then shows the airplane metal, ignited fuel, dust and smoke exiting the building on the opposite side.

The simulation found that the airplane's metal skin peeled away shortly after impact and shows how the titanium jet engine shafts flew through the building like bullets.

As with an earlier simulation developed by this team that examined the 9/11 attack on the Pentagon, the World Trade Center simulation showed that it was the weight of the 10,000 gallons of fuel more than anything else that caused the damage.

"It is the weight, the kinetic energy of the fuel that causes much of the damage in these events," Hoffmann says. "If it weren't for the subsequent fire, the structural damage might be almost the same if the planes had been filled with water instead of fuel."

Mete Sozen, Purdue's Kettlehut Distinguished Professor of Structural Engineering and a principal investigator on the simulation project, says the researchers worked for years and used the best computing resources available to recreate the event.

"To estimate the serious damage to the World Trade Center core columns, we assembled a detailed numerical model of the impacting aircraft as well as a detailed numerical model of the top 20 stories of the building," Sozen says. "We then used weeks of supercomputer time over a number of years to simulate the event in many credible angles of impact of the aircraft."

Sozen says the actual damage to the building's facade that was observed was identical to the damage shown by the numerical simulation.

"We calibrated our calculations using data from experiments we had conducted to evaluate the energy imparted from fluid moving at high speed to solid targets," he says. "We concluded that the damage map we calculated for our numerical model of the building would correspond closely to the actual extent of the damage."

The simulation represented the plane and its mass as a mesh of hundreds of thousands of "finite elements," or small squares containing specific physical characteristics. In the visualization, these scientific data points are used to show how airplane components swept through the building and out through the other side as the fuel ignited.

"The aircraft moved through the building as if it were a hot and fast lava flow," Sozen says. "Consequently, much of the fireproofing insulation was ripped off the structure. Even if all of the columns and girders had survived the impact - an unlikely event - the structure would fail as the result of a buckling of the columns. The heat from an ordinary office fire would suffice to soften and weaken the unprotected steel. Evaluation of the effects of the fire on the core column structure, with the insulation removed by the impact, showed that collapse would follow whatever the number of columns cut at the time of the impact."

The animation is the latest in a series of projects by the Purdue team that arose after 9/11 to determine the structural damage that occurs when an airplane collides with a building. Although one goal was to develop structures that can withstand a terrorist attack, the team also has used this research to investigate other scenarios, such as an airplane inadvertently crashing into a building located near an airport.

"This is important work that has many more applications than we first thought," Hoffmann says. "The important thing is that we are learning so much in so many different areas."

The research was funded in part by the National Science Foundation.

Others involved in the research are civil engineering assistant professors Ayhan Irfanoglu and Santiago Puiol, computer science doctoral student Paul Rosen, and civil engineering doctoral students Oscar Ardila and Ingo Brachmann.

- - - -

CONTACTS

Writer: Steve Tally, 765-494-9809, tally@purdue.edu

Sources: Christoph Hoffmann, 765-494-6185, cmh@cs.purdue.edu

Voicu Popescu, 765-496-7347, popescu@cs.purdue.edu

Mete Sozen, 765-494-2186, sozen@purdue.edu

NOTE TO EDITORS: Broadcast-quality DVDs of the animation without the researcher's narration are available in both standard quality and high definition from Steve Tally, 765-494-9809, tally@purdue.edu

IMAGES: Publication-quality photos are available at http:// news.uns.purdue.edu/images/+2007/popescu-animation.jpg and http://news.uns.purdue.edu/images/+2007/popescu-animation3.jpg. A video is available at http://www.cs.purdue.edu/cgvlab/papers/popescu/popescuWTCVIS07.mov.

PHOTO CAPTION 1: A team of researchers from Purdue has created a scientifically based video animation of the 9/11 attacks on the World Trade Center. The animation shows that the façade of the World Trade Center north tower provided little resistance to the aircraft used in the attack. The visualization of the attacks will help civil engineers develop buildings that are more resistant to terrorists, the researchers say. (Purdue University image/Voicu Popescu)

PHOTO CAPTION 2: Purdue researchers have developed a scientifically based video animation of the 9/11 attacks on the World Trade Center. Their research has found that it was the weight of the fuel combined with the fire, and not the aircraft itself, that caused the most damage to the buildings. This information can be used by engineers to build new structures that are better able to withstand such attacks, the researchers say. (Purdue University image/Voicu Popescu)

VIDEO: A scientifically based video animation of the 9/11 attacks on the World Trade Center by researchers at Purdue shows that it was the weight of the fuel combined with the fire, and not the aircraft itself, that caused the most damage to the buildings. Only a few parts of the airplane, such as the titanium jet propeller shafts, actually continued through the building, the researchers say. (Purdue University image/Voicu Popescu)

Gold9472
06-12-2007, 04:53 PM
And THIS is exactly why I don't promote Controlled Demolition, and instead, refer people to Prof. Jones. How the fuck do I know who's science is right or wrong?

Gold9472
06-12-2007, 04:55 PM
However, I think it's fucking stupid for people to promote Controlled Demolition as fact. Especially because work like this exists.

Gold9472
06-12-2007, 04:59 PM
And making it the movement's main point of focus is just idiotic.

AuGmENTor
06-12-2007, 05:00 PM
I don't think that will stop anyone though Jon...

Gold9472
06-12-2007, 05:01 PM
Does that make me a shill, or does that make me someone who tries my damndest to promote the best information possible, and doesn't take chances with information I don't understand.

Gold9472
06-12-2007, 05:02 PM
I don't think that will stop anyone though Jon...

Of course not. This movement has been played. I can't prove it, but it has.

Gold9472
06-12-2007, 05:03 PM
All I know is you can't debunk the information I put forward.

AuGmENTor
06-12-2007, 05:45 PM
Of course not. This movement has been played. I can't prove it, but it has.You mean penetrated and corrupted by disinfo? No shit...

Gold9472
06-12-2007, 06:07 PM
You mean penetrated and corrupted by disinfo? No shit...

I didn't say disinfo. I meant the movement has been played into making CD it's main focus.

MrDark71
06-12-2007, 06:50 PM
And THIS is exactly why I don't promote Controlled Demolition, and instead, refer people to Prof. Jones. How the fuck do I know who's science is right or wrong?

Maybe I'm not following you ....are you saying you believe those buildings fell as a result of impact and fire?

PhilosophyGenius
06-12-2007, 06:53 PM
Now obviously they made this to explain the collapse.

In other words, they knew what the conclusion was and based the models around it. Now if they had done a test pre-9/11 of what would happen if planes hit those buildings, I'm 100% they'd have a completly different animation.

Gold9472
06-12-2007, 06:55 PM
Maybe I'm not following you ....are you saying you believe those buildings fell as a result of impact and fire?

Not at all. I'm saying I don't know. That being said, I think Professor Jones makes an extremely convincing argument, and has earned the right to be heard. However, I do not believe it is prudent to be going around, and only promoting the idea of Controlled Demolition.

Gold9472
06-12-2007, 06:56 PM
If this thread becomes a Controlled Demolition debate, be forewarned, I won't be apart of it.

AuGmENTor
06-12-2007, 06:59 PM
I think we have done that to death in here...

Gold9472
06-12-2007, 07:04 PM
I think we have done that to death in here...

I'm waiting for someone to call me a "shill." A "disinformationist." A "Zionist mole." An "agent of Larry Silverstein." A "LIHOPer." A "gatekeeper."

AuGmENTor
06-12-2007, 07:13 PM
If I see that shit, I will ban them myself....

PhilosophyGenius
06-12-2007, 07:22 PM
I'm waiting for someone to call me a "shill." A "disinformationist." A "Zionist mole." An "agent of Larry Silverstein." A "LIHOPer." A "gatekeeper."

Wrong forum.
















:jesusico:

Gold9472
06-12-2007, 07:41 PM
If I see that shit, I will ban them myself....

They won't do it here. It will take place elsewhere in an effort to "discredit" me. At least, that's what has happened in the past. If you don't like my efforts regarding 9/11 Truth, then don't listen to what I have to say. However, know this... I am no "disinformationist", or a member of an alphabet agency. I do this because I love my country, and this world, and I don't want to see it go to hell in a hand basket just so some rich people can become richer. I also don't want to see murderers get away with murder. I will always promote what I consider to be "good" information. Read it, don't read it. It's better you don't rely on me for your information anyway.

AuGmENTor
06-12-2007, 07:43 PM
I have to get my info from SOMEWHERE... You have proven an priceless resource. Fuck the haters...

Gold9472
06-12-2007, 07:44 PM
Thanks.

Eckolaker
06-12-2007, 07:59 PM
Jon you are
I'm waiting for someone to call me a "shill." A "disinformationist." A "Zionist mole." An "agent of Larry Silverstein." A "LIHOPer." A "gatekeeper."

There I said it hehe.

Seriously though, I don't think anyone here doubts how those buildings came down. However, its not the "lynch pin" if you will. It's simply another fact in the sea of many that proves 9/11 was not an Arab-terrorist plot.

Gold9472
06-19-2007, 07:21 AM
Purdue providing look inside Sept. 11 attacks

http://www.wthr.com/Global/story.asp?S=6677255&nav=9Tai

David MacAnally/Eyewitness News
June 19, 2007 06:13 AM

West Lafayette - New images are putting you inside the World Trade Center on 9-11. Purdue scientists are studying the strike and what really brought down the twin towers.

Experts at Purdue's Rosen Center for Advanced Computing are computing a new view of the 9-11 attacks.

Computer scientists studied the strike on the north tower of the World Trade Center for almost three years. Another team used a special program to convert those numbers into numbing visuals.

"You can visualize the important damage done to the core columns," one of the team members reported on a video summarizing the findings.

In a new finding, Purdue experts calculate the sheer weight of the jet fuel badly damaged the building's supports even before the fireball.

"At high speed, liquid can become hard and aluminum can become cutting," said Purdue Professor Christoph Hoffman. "Liquid impact and the debris cut some of the structure, the entry hall and the core and it stripped off some of the fireproofing."

That may have made the building more vulnerable to the fireball, speeding up the deadly collapse. The Purdue team says the visualizations do not support conspiracy buffs who claim bombs brought the building down.

"The conspiratorialists would like you to believe that nobody is investigating these questions and they have been investigated," said Professor Hoffman.

"The Holy Grail of the work like this would be to be able, in real time, when these disasters happen, to estimate the viability of the building. How long will it stand and how long do rescuers have," said Voicu Popescu, who worked on the computer visualizations.

When word of the on-line visualizations first got out, the web site scored 1500 hits per hour, temporarily bringing down the server.

Gold9472
06-20-2007, 07:46 AM
New Study Supports Federal Finding in 9/11 Tragedy

http://www.fox28.com/News/index.php?ID=20383

6/20/2007

A study using 3-D simulation supports a federal agency's findings about how two hijacked jetliners were able to bring down New York's World Trade Center towers on 9/11.

The two-year Purdue University study shows that when the planes struck the buildings, they stripped away crucial fireproofing material. The weakened towers collapsed under their own weight. A federal agency's analysis focused on damage to the fireproofing, and did not blame the collapse on the design of the towers.

One of the lead researchers on the Purdue study, Christoph Hoffman, says it shows the absolute essential nature of fireproofing steel structures. Hoffman says when the World Trade Center was built the codes did not require steel beams to be fireproofed.

The study shows that the planes' fuel produced a "flash flood of flaming liquid" that knocked out vital structural columns.

Gold9472
06-20-2007, 07:52 AM
http://www.fox28.com/News/index.php?ID=20383
http://www.wthr.com/Global/story.asp?S=6677255&nav=9Tai
http://www.foxnews.com/story/0,2933,284816,00.html
http://www.boston.com/news/nation/articles/2007/06/20/simulation_finds_911_fireproofing_key/?p1=MEWell_Pos5
http://www.washingtonpost.com/wp-dyn/content/article/2007/06/20/AR2007062000308.html
http://www.smh.com.au/news/World/Computer-simulates-Trade-Centre-attack/2007/06/20/1182019190229.html
http://www.guardian.co.uk/worldlatest/story/0,,-6722428,00.html
http://www.wistv.com/Global/story.asp?S=6683593

I think I'm going to throw up. Regardless of whether or not CD took place at the WTC, now that this simulation exists, and the media is promoting it, we have been "debunked" on this issue, and our credibility is going down the tubes.

As William Pepper said, "THEY WILL DISCREDIT YOU." Thank you to everyone that helped to make CD our main talking point.

Chana3812
06-20-2007, 08:44 AM
Jon, they did the same thing when Nova produced a documentary called "Why the Towers Fell." Same shit, different day. Everyone ate it up.

I finally got a chance to watch purdue's video - it proves nothing. Fancy smancy - it doesn't show a collapse sequence, NOTHING ABOUT BUILDING 7.

The sheep will continue to follow because they Never want to think for themselves. The critical thinkers will continue to do their research and question everything.

The Purdue video was not that impressive in proving why the towers fell (just good cad)- imho

Gold9472
06-20-2007, 09:04 AM
Jon, they did the same thing when Nova produced a documentary called "Why the Towers Fell." Same shit, different day. Everyone ate it up.

I finally got a chance to watch purdue's video - it proves nothing. Fancy smancy - it doesn't show a collapse sequence, NOTHING ABOUT BUILDING 7.

The sheep will continue to follow because they Never want to think for themselves. The critical thinkers will continue to do their research and question everything.

The Purdue video was not that impressive in proving why the towers fell (just good cad)- imho

My point is, it doesn't matter whether it proves or disproves anything. The fact that it even exists is enough. My point is, ENOUGH with CD as being the main point of focus for every single God damned 9/11 event. My point is, ENOUGH with people going around promoting as fact that people like Larry Silverstein are murderers. My point is, there is MORE to the story. There always has been.

Chana3812
06-20-2007, 09:27 AM
My point is, there is MORE to the story. There always has been.


So Very True.... And We will never know the whole story.... but

Bubele, just don't let some cutesy animation get you all farfalen...

this story will be just a blip on the newscreen by tomorrow.

obviously too many people were paying attention to 9/11 truthers so "they" had to conjure up some scientific crap to play to the public.

Gold9472
06-20-2007, 10:04 AM
Over a two year period?

Chana3812
06-20-2007, 11:23 PM
Yeah! It may have taken them two years to perfect their little animation - it doesn't prove anything, or disprove anything either. And I DO believe a plane hit the building and it was full of jet fuel - that's all the animation shows.

It's A Propaganda Story - just like the first feature documentary "Why the Towers Fell" which proposed the same theory - that flimsy fireproofing caused the trusses to fail ... which I watched back then and was facinated by .... before I learned the Truth.

So, I am a good example. I bought the bullshit at first, then later heard the truth from someone I trusted, and then did a LOT of internet research on my own .... and I changed my belief.

MrDark71
06-21-2007, 07:38 AM
To me it just proves these guys might want to look for work with video games

Chana3812
06-21-2007, 10:39 AM
Yeah, this story will be gone in another 24 hours. I still haven't seen it mentioned on TV, anyone ??

Wakeup
06-22-2007, 11:45 PM
I wish someone could fund a study where tower 1 or 2 were reconstructed, like 20 storys or so, not the whole thing, and fly an unmanned drone into it and see what happens. You could add lead weights or something on the top to represent the gravitational stress that the rest of the building that wasn't built would have added. It would probably find that there could have been 200 more storys of weight above the impact and it still wouldn't have collapsed lol. Just rambling my thoughts.
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What a shocker! Watch http://www.zeitgeistmovie.com/index.html I feel enLIGHTened. :banana: