Article View: la.transportation
Article #372Dynamic Modeling
From: Mike O'Dorney
Date: Mon, 20 Aug 2001 15:20
Date: Mon, 20 Aug 2001 15:20
23 lines
2262 bytes
2262 bytes
> ...and computer-controlled devices that can shake a > model of a structure to see what would happen (and we also have > fast enough computers to analyze what how the structure would > respond as well). ALong these lines, Parametric Technology Corp, Makers of Pro Engineer, has a cad cam model of a steam locomotive frame and driving gear. They use this demo model with some of their software that shows deflections of mechanical structures under dynamic loads. This particular model has the deflections amplified ten times. Steam locomotives are usually unbalanced, despite a plethora of counterweights, and to watch this demo twist and squirm as the driving gear moves is eye-opening. I haven't seen this demo in a museum, but have seen it at a few trade shows. It's been around a few years, so PTC might not mind it "floating around". It would be interesting to see the models used to design the new Bay Bridge, and see the flexing (amplified ten times) under simulated earthquakes. Any Pro-E jockeys out there with the loco frame (and maybe a bridge?) cheers, Mike
Technical Details
Message-ID:
<4a5d976e.0108200720.3775198e@posting.google.com>Path:
arc1-ca.pugleaf.net!archiver1.google.com!news2.google.com!postnews1.google.com!not-for-mailReferences:
<88e6ca33.0108090052.98e157@posting.google.com> <3B72B2AA.CA9FBCA1@thegrid.net> <3B72C87B.38024F02@but.us.chickens> <88e6ca33.0108101737.4377befd@posting.google.com> <9l260p$lmk$1@slb6.atl.mindspring.net> <nobody-1908012341220001@adsl-209-233-20-69.dsl.snfc21.pacbell.net>Show Full Headers
Complete Article Headers
X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: fd3ff,aa5314338c14ea63 X-Google-Attributes: gidfd3ff,public X-Google-Thread: f59f9,865b7458dc0f15ec X-Google-Attributes: gidf59f9,public X-Google-ArrivalTime: 2001-08-20 08:20:47 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news2.google.com!postnews1.google.com!not-for-mail From: modorney@aol.com (Mike O'Dorney) Newsgroups: la.transportation,ba.transportation Subject: Dynamic Modeling Date: 20 Aug 2001 08:20:47 -0700 Organization: http://groups.google.com/ Lines: 23 Message-ID: <4a5d976e.0108200720.3775198e@posting.google.com> References: <88e6ca33.0108090052.98e157@posting.google.com> <3B72B2AA.CA9FBCA1@thegrid.net> <3B72C87B.38024F02@but.us.chickens> <88e6ca33.0108101737.4377befd@posting.google.com> <9l260p$lmk$1@slb6.atl.mindspring.net> <nobody-1908012341220001@adsl-209-233-20-69.dsl.snfc21.pacbell.net> NNTP-Posting-Host: 64.128.204.249 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Trace: posting.google.com 998320847 30406 127.0.0.1 (20 Aug 2001 15:20:47 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: 20 Aug 2001 15:20:47 GMT