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Reply #12: Is this more genuous? [View All]

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jberryhill Donating Member (1000+ posts) Send PM | Profile | Ignore Wed Jan-10-07 04:36 PM
Response to Reply #9
12. Is this more genuous?

Impact of the Boeing 767 Aircraft into the World Trade Center

J. Engrg. Mech., Volume 131, Issue 10, pp. 1066-1072 (October 2005)

Mohammed R. Karim1 and Michelle S. Hoo Fatt2
1Graduate Student, Dept. of Mechanical Engineering, The Univ. of Akron, Akron, OH 44325-3903.
2Associate Professor, Dept. of Mechanical Engineering, The Univ. of Akron, Akron, OH 44325-3903 (corresponding author). E-mail:

(Accepted 1 December 2004)

A numerical simulation of the aircraft impact into the exterior columns of the World Trade Center (WTC) was done using LS-DYNA. For simplification, the fuselage was modeled as a thin-walled cylinder, the wings were modeled as box beams with a fuel pocket, and the engines were represented as rigid cylinders. The exterior columns of the WTC were represented as box beams. Actual masses, material properties and dimensions of the Boeing 767 aircraft and the exterior columns of the WTC were used in this analysis. It was found that about 46% of the initial kinetic energy of the aircraft was used to damage columns. The minimum impact velocity of the aircraft to just penetrate the exterior columns would be 130 m/s. It was also found that a Boeing 767 traveling at top speed would not penetrate exterior columns of the WTC if the columns were thicker than 20 mm.
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  -Do the Crash Physics Prove No Planes? spooked911  Jan-09-07 08:42 AM   #0 
  - clearly this analysis has serious issues  vincent_vega_lives   Jan-09-07 01:36 PM   #1 
  - You aren't kidding....  jberryhill   Jan-09-07 03:40 PM   #3 
  - Still looks like wood to me?  DoYouEverWonder   Jan-10-07 04:39 AM   #5 
  - Yes and an 767 is a simple homogenous structure  vincent_vega_lives   Jan-10-07 04:53 AM   #6 
     - I didn't post the examples  DoYouEverWonder   Jan-10-07 04:58 AM   #7 
        - As usual you miss the point  vincent_vega_lives   Jan-10-07 06:58 AM   #8 
  - That is a disingenuous comparison.  PerpetualYnquisitive   Jan-10-07 09:03 AM   #9 
     - Is this more genuous?  jberryhill   Jan-10-07 04:36 PM   #12 
     - No, as it is merely proof of imagination.  PerpetualYnquisitive   Jan-12-07 11:34 AM   #17 
        - They rely very heavily on computer simulations.  greyl   Jan-12-07 11:41 AM   #19 
        - okay, then watch an airplane wing go through concrete...  jberryhill   Jan-22-07 09:01 AM   #78 
           - Nice try but NO cigar.  PerpetualYnquisitive   Jan-22-07 01:33 PM   #79 
              - Yes, that's what the narrator says  jberryhill   Jan-22-07 11:40 PM   #80 
                 - if you think the concrete is being "sliced"  CB_Brooklyn   Jan-23-07 12:02 AM   #83 
     - How 'bout plastic?  vincent_vega_lives   Jan-11-07 02:55 PM   #14 
        - From your link.  PerpetualYnquisitive   Jan-12-07 11:39 AM   #18 
           - No Shit it isnt in production  vincent_vega_lives   Jan-12-07 12:36 PM   #20 
              - I won't bother to hold my breath waiting....  PerpetualYnquisitive   Jan-12-07 02:16 PM   #21 
                 - Please bother  vincent_vega_lives   Jan-12-07 03:41 PM   #22 
                    - Airliner vs. light tier  PerpetualYnquisitive   Jan-13-07 12:26 AM   #23 
                       - Now you've proved you don't know what your talking about  vincent_vega_lives   Jan-13-07 10:15 AM   #26 
  - You still haven't given an example where this is wrong.  spooked911   Jan-13-07 12:30 PM   #28 
  - I'd still like an example of any object disintegrating as it collides with another object  spooked911   Jan-15-07 08:53 AM   #36 
  - I'd still like an example of any object disintegrating as it collides with another object  spooked911   Jan-16-07 09:37 AM   #37 
     - I'd still like an example of any object disintegrating as it collides with another object  spooked911   Jan-17-07 06:13 AM   #40 
        - Funny  vincent_vega_lives   Jan-17-07 11:22 AM   #43 
        - It was pretty darn close  spooked911   Jan-18-07 02:43 AM   #45 
           - So now we go from  vincent_vega_lives   Jan-18-07 07:38 AM   #52 
        - Hollow Point Bullets  jberryhill   Jan-22-07 11:46 PM   #81 
  - Look up 'depleted uranium penetrator' and 'pyrophoric'  vincent_vega_lives   Jan-17-07 11:21 AM   #42 
     - Where did the plane go, if it didn't disappear?  spooked911   Jan-18-07 02:51 AM   #46 
     - Mostly in the fucking building obviously  vincent_vega_lives   Jan-18-07 06:56 AM   #48 
        - Isn't the idea that DU is "pyrophoric" and burns when exposed to air?  spooked911   Jan-18-07 07:20 AM   #49 
           - I've said it before, I'll say it again  vincent_vega_lives   Jan-18-07 07:33 AM   #51 
              - Here is the actual quote from wikipedia  spooked911   Jan-19-07 07:28 AM   #53 
                 - Deleted message  Name removed   Jan-19-07 08:26 AM   #54 
                 - What are you referring to please.  vincent_vega_lives   Jan-19-07 10:00 AM   #55 
                 - why didn't you put a link in  spooked911   Jan-21-07 11:53 AM   #75 
                 - Bullshit! You've made a simple mistake, I forgive you. vvl did nothing unethical.  greyl   Jan-19-07 12:10 PM   #58 
                    - WTF????  vincent_vega_lives   Jan-19-07 02:10 PM   #60 
                    - What is this "wiki-mirror" and why would someone use it over  spooked911   Jan-21-07 11:57 AM   #76 
                 - Thats odd.  vincent_vega_lives   Jan-19-07 10:27 AM   #56 
                 - VincentVega, come on down!  boloboffin   Jan-19-07 11:51 AM   #57 
                 - See post 58 nt  greyl   Jan-19-07 12:12 PM   #59 
                 - Now it's official  vincent_vega_lives   Jan-19-07 02:28 PM   #61 
                    - That would be fair, wouldn't it? nt  greyl   Jan-20-07 06:52 AM   #62 
                    - Fine, I will retract. However-- you should have provided your source in the first place.  spooked911   Jan-21-07 12:00 PM   #77 
     - thanks for the example though  spooked911   Jan-18-07 03:00 AM   #47 
        - Though I should clarify-- I wanted an example where the object  spooked911   Jan-18-07 07:22 AM   #50 
           - Bullet Fragmentation  jberryhill   Jan-22-07 11:49 PM   #82 
  - It may be "surprising what it can penetrate" but what can it  treestar   Jan-20-07 12:38 PM   #63 
  - I had a look at the Holmgren thing  KJF   Jan-09-07 01:45 PM   #2 
  - OR  mirandapriestly   Jan-09-07 10:36 PM   #4 
  - You really should get the opinion ...  William Seger   Jan-11-07 03:12 PM   #15 
  - A lot of half truth and bald faced lies, there.  TheWraith   Jan-10-07 03:01 PM   #10 
  - Another excellent analogy. n/t  boloboffin   Jan-10-07 04:01 PM   #11 
  - Do Calendar Physics prove that Today is Friday?  MervinFerd   Jan-10-07 07:23 PM   #13 
  - "Is there something wrong with these analyses?"  William Seger   Jan-11-07 03:17 PM   #16 
  - Then explain it with physics  treestar   Jan-20-07 12:41 PM   #64 
     - Useless?  AZCat   Jan-20-07 02:25 PM   #69 
        - If the expert cannot explain it to non-experts, how can he/she  treestar   Jan-20-07 08:20 PM   #72 
           - That's funny.  AZCat   Jan-21-07 12:49 AM   #74 
  - Planes don't disappear into buildings without any trace  mirandapriestly   Jan-13-07 03:01 AM   #24 
  - Why do you post stuff you know is patently false?  LARED   Jan-13-07 08:40 AM   #25 
     - we've seen a picture of an engine under a canopy  spooked911   Jan-13-07 12:24 PM   #27 
        - And large sections of fuselage on roofs  LARED   Jan-13-07 01:41 PM   #29 
           - Don't worry the truthers "are just asking questions"  Anarcho-Socialist   Jan-13-07 02:11 PM   #30 
           - I've seen one section of fuselage-- on the roof of WTC5-- may well  spooked911   Jan-13-07 09:01 PM   #31 
              - There are lots more than that  G Hawes   Jan-13-07 09:24 PM   #32 
              - I only see remotely plane-like debris in the first two  spooked911   Jan-15-07 08:48 AM   #34 
                 - Parts have serial numbers  DoYouEverWonder   Jan-20-07 04:31 PM   #71 
                 - They are photos taken by a twoofer  G Hawes   Jan-20-07 10:10 PM   #73 
              - Fireball could have been from some other fuel in the building.  LARED   Jan-13-07 10:59 PM   #33 
                 - there are lots of possible explanations for this-- it is the least of the problems  spooked911   Jan-15-07 08:51 AM   #35 
                 - If there are lots of explanations, can you provide at least  LARED   Jan-16-07 10:55 AM   #38 
                    - fuel-bomb, incendiary missile, etc  spooked911   Jan-17-07 06:12 AM   #39 
                 - Did you say "fireball" Lared?  mirandapriestly   Jan-17-07 10:55 AM   #41 
                    - What makes you think this is a laser?  LARED   Jan-20-07 01:28 PM   #65 
                       - You're not going to get an answer, LARED.  AZCat   Jan-20-07 01:56 PM   #66 
                          - Wow, I'm getting misty thinking of all the times  LARED   Jan-20-07 02:17 PM   #67 
                             - Pull yourself together, man!  AZCat   Jan-20-07 02:22 PM   #68 
                                - Sniff. You're right.. I'll try and focus on "business"  LARED   Jan-20-07 03:24 PM   #70 
  - So this is the latest junk theory?  vincent_vega_lives   Jan-17-07 11:34 AM   #44 

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