Finite Element Analysis (FEA)

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World Trade Center 7 NIST Collapse Simulation

Lu-Jiang Model of the Collapse of WTC 1 and WTC 2

TrueGrid

LS-DYNA

Fire Modeling

Supercomputers

Electronics Simulation

Computer Simulation Examples

Explosives Simulation

World Trade Center Simulations

World Trade Center Blueprints

Report.pdf_page_00022.pdf


http://www.bridgeart.net/software_database/

http://www.calculix.de/

http://impact.sourceforge.net/

http://chronicle.com/weekly/v48/i15/15a02701.htm

http://911blogger.com/node/10466

http://www.geocities.com/throwawayaddy2/report.html

http://www.silvereagletaphouse.com/wtc-show.html

http://wtcmodel.wikidot.com/

http://911research.wtc7.net/wtc/models/index.html

[0609105 Cherry Tree vs. Cr╦ćepes Suzette: Global Model of Collapse of the World Trade Centers]

http://math.uni-graz.at/keeling/wtc.html

http://ccl.northwestern.edu/netlogo/models/

http://en.wikipedia.org/wiki/NetLogo

http://math.uni-graz.at/keeling/wtc.nlogo

http://news.uchicago.edu/news.php?asset_id=1354

http://www.abovetopsecret.com/forum/thread289264/pg7

http://www.rcac.purdue.edu/news/news_wtc.cfm

http://georgewashington.blogspot.com/2007/06/purdue-simulation-full-of-hot-air.html

http://www.youtube.com/user/mmmlink

http://library.witpress.com/pages/PaperInfo.asp?PaperID=18748

http://www.calculix.de/

http://www.ann.jussieu.fr/free.htm

http://tochnog.sourceforge.net/

http://impact.sourceforge.net/

http://s3.amazonaws.com/nasathermalimages/public/video/DeformedShape.avi

http://www.ansys.com/services/ss-hardware-support.asp

http://imechanica.org/node/470

http://impactprogram.wikispaces.com/Video1

http://www.caelinux.com/CMS/

http://www.code-aster.org

http://www.salome-platform.org/home/presentation/overview/

http://www.ce.berkeley.edu/rlt/feap/

http://www.opencascade.org/

http://z88.uni-bayreuth.de/english.html

http://www.dealii.org/

http://www-rocq.inria.fr/OpenFEM/

http://www.opendx.org/

http://www.geuz.org/gmsh/

http://tahoe.ca.sandia.gov/

http://www.ctcms.nist.gov/oof/

http://www.oofem.org/

http://www.csc.fi/english/pages/elmer

http://imechanica.org/forum/357

http://www.caelinux.org/wiki/downloads/docs/Pipe2007/PipeGeom.htm

http://www.bridgeart.net/software_database/

http://www.cs.cmu.edu/quake/triangle.html

http://www.cimne.com/kratos/

http://www.featflow.de/album/index.html

http://www.featflow.de/

http://sokocalo.engr.ucdavis.edu/jeremic/PDD/

http://mechsys.nongnu.org/index.shtml

http://www.fenics.org/wiki/FEniCS_Project

http://cern49.cee.uiuc.edu/cfm/warp3d.html

http://www.mathematik.uni-dortmund.de/numlab/

http://www.bridgeart.net/wiki/Main_Page

http://www.tecplot.com/

http://www.cs.cmu.edu/quake/showme.html

http://www.lanl.gov/news/index.php/fuseaction/home.story/story_id/13602

http://www.sciencenews.org/view/generic/id/37200/title/No_naked_black_holes

http://www.theage.com.au/news/technology/quarks-gluons-and-corroborating-emc2/2008/11/21/1226770694126.html

http://www.newscientist.com/article/dn16095-its-confirmed-matter-is-merely-vacuum-fluctuations.html?full=true&print=true

http://arxiv.org/PS_cache/arxiv/pdf/0711/0711.2106v1.pdf

http://www.dealii.org/

http://www.fenics.org/wiki/FEniCS_Project

http://libmesh.sourceforge.net/presentations.php

http://www.cimne.com/kratos/

ttp://www.abovetopsecret.com/forum/thread407861/pg1&addstar=1&on=5252107#pid5252107


Do NIST's computer models meet the International Building Codes?


Topic started on 3-11-2008 @ 02:10 PM by Griff


Let's look at the criteria for the "International Code Council Performance Code For Buildings and Facilities" to find out.


APPENDIX E

USE OF COMPUTER MODELS

This appendix gives guidance regarding qualifications and information that should be provided when undertaking computer modeling. More specifically, the appendix requests that computer program data be submitted as part of the documentation. Also, limitations and applicability of the model must be included as part of the documentation. Finally, the scenarios used to run the particular model must be justified. This is an area along with the analysis of individual performance-based designs and methods where organizations such as evaluation services may have a role. The model is only as good as the input selected and the specific application of the model. Very often, inappropriate and unrealistic input data is used, and models often have very specific application limitations. Therefore, simply because a model has been reviewed does not mean that enough information has been provided for the specific application to be accepted. The criteria used to approve the model must be very specific in order to provide guidance to the code official or outside reviewer as to what specifically about the model has been reviewed. These criteria will provide a clear understanding of what additional review of that specific application of the model may be necessary.

Personally, I feel NIST has failed.

Edit: Sorry for not supplying a link. You have to pay for the IBCs and it would probably be considered pirating if I supplied a link to them (if there even is one). I bought my copy, that is why I can copy and paste it.

1. Collapse Models

NIST's computer-generated models of the collapse of WTC 7, as in Figure 12-69 of NCSTAR 1-9 and Figure E-4 of NCSTAR 1-9A, as well as the collapse models presented at http://www.nist.gov/public_affairs/r...tc_videos.html do not correspond with the way in which the building can be seen descending on the several videos that captured the collapse. In the videos, the perimeter walls, connected to and supported by the large number of perimeter columns, retain their rectangular shape until late in the collapse; the perimeter columns clearly do not almost immediately buckle inwards over the building as they do in NIST's models. Therefore, NIST needs to develop a collapse model that describes the way in which WTC 7 actually collapsed on September 11th. -Vesa

http://www.ctcms.nist.gov/fipy/

http://trilinos.sandia.gov/capability_areas.html

http://home.gna.org/getfem/

http://www.fenics.org/wiki/Gallery

https://wci.llnl.gov/codes/ale3d/applications.html

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