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Big Les · 20th December 2008, 08:14 AM

I can't find any reference on the forums to the below-linked PDF (from "Century Dynamics Inc"), so thought you guys might be interested. I'm not up enough on the subject these days to know whether the contents are so outdated as to be useless (as I would imagine they might be after 6 years).

http://hsrlab.gatech.edu/AUTODYN/papers/paper142.pdf

Mancman · 21st December 2008, 06:35 AM

Interesting. Never seen this one before.

There's a few errors that jump out at me though.

They give the plane a total weight of 186 tons - probably an overestimate by approx 55 tons. The fuel is given as 94 tons, approx 3 times the probable value.
They have the plane coming in wings level, when it was banked to 25 degrees IIRC.
They also state the engines weigh 31 tons each, which is bizarre.

The impact part is certainly made redundant by later simulations. The collapse analysis looks interesting though, I'll let more qualified people (anyone else) comment on that bit.

20th December 2008, 08:14 AM	#1
Big Les Not so much a medium as a large Join Date: Mar 2006 Location: United Kingdom Posts: 5,004	AUTODYN-3D modelling of N Tower collapse (2002) I can't find any reference on the forums to the below-linked PDF (from "Century Dynamics Inc"), so thought you guys might be interested. I'm not up enough on the subject these days to know whether the contents are so outdated as to be useless (as I would imagine they might be after 6 years). http://hsrlab.gatech.edu/AUTODYN/papers/paper142.pdf
	__________________ "Feeling you’ve done something is not quite the same as the empirical scientific proof." -Stephen Fry The BS Historian

21st December 2008, 06:35 AM	#2
Mancman Graduate Poster Join Date: Jun 2006 Location: Manchester, UK Posts: 1,010	Interesting. Never seen this one before. There's a few errors that jump out at me though. They give the plane a total weight of 186 tons - probably an overestimate by approx 55 tons. The fuel is given as 94 tons, approx 3 times the probable value. They have the plane coming in wings level, when it was banked to 25 degrees IIRC. They also state the engines weigh 31 tons each, which is bizarre. The impact part is certainly made redundant by later simulations. The collapse analysis looks interesting though, I'll let more qualified people (anyone else) comment on that bit.
	__________________ R.I.P Dr. Adequate