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Midnight Mike
2006-09-12, 07:35 PM
Scientists And Engineers Simulate Jet Colliding With World Trade Center
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.

The simulation could be used to better understand which elements in the building's structural core were affected, how they responded to the initial shock of the aircraft collision, and how the tower later collapsed from the ensuing fire fed by an estimated 10,000 gallons of jet fuel, said Mete Sozen, the Kettelhut Distinguished Professor of Structural Engineering in Purdue's School of Civil Engineering.

http://www.sciencedaily.com/releases/20 ... 153219.htm (http://www.sciencedaily.com/releases/2006/09/060911153219.htm)
NIKV69
2006-09-12, 07:54 PM
Better understand? Is there a metal in this world that can withstand that temperature for any period of time?
PhilDernerJr
2006-09-12, 08:03 PM
So where's the simulation? I can't find thelink, only the article.
emshighway
2006-09-12, 08:14 PM
Better understand? Is there a metal in this world that can withstand that temperature for any period of time?

The tempature didn't have to be at melting point but just enough to soften and weaken the metal.
NIKV69
2006-09-12, 08:41 PM
The tempature didn't have to be at melting point but just enough to soften and weaken the metal.

6 and a half of one 5 and a half etc.

Any one with basic knowledge of those buildings knew the pancake effect would happen if enough floors gave way.
Jonesbeach
2006-09-12, 09:59 PM
I thought the latest report said the heat softened the floor joists so much that they deflected downward several feet. In the process of deflecting, they pulled on the exterior columns which were now the only structure holding up the building. (The jets took out the interior concrete core.) Once the exterior columns gave way, the section of building above the impact plunged to the ground bringing all the lower floors with it as it fell. So not so much one floor dropping onto the lower to start the chain reaction, but the whole top just ripping through everything.
Matt Molnar
2006-09-12, 11:14 PM
It's odd how the article cites the 10,000 gallons of jet fuel as the problem. Jet fuel does not burn very hot, and it was all burned away in a matter of minutes...it was the contents of the building...desks, chairs, computers, plastics, wood, paper, etc, that did the real damage.
Midnight Mike
2006-09-12, 11:42 PM
It's odd how the article cites the 10,000 gallons of jet fuel as the problem. Jet fuel does not burn very hot, and it was all burned away in a matter of minutes...it was the contents of the building...desks, chairs, computers, plastics, wood, paper, etc, that did the real damage.

It was a combination of all factors,

Here is a good illustration:

http://img.photobucket.com/albums/v726/MidnightMike/wtc_graphic.gif