## Search found 705 matches

Mon Aug 03, 2009 3:15 pm
Topic: How and Why to Register for this forum
Replies: 1
Views: 3515

### How and Why to Register for this forum

HOW: Anyone can register. Registration is EASY. SImply click the registration link and you will be asked for your email address and voila! You are registered! The forum will email us so we can immediatly validate your registration. Your email will NOT be used for anything other than verification th...
Thu Jul 23, 2009 1:36 pm
Forum: Collision & Trajectory Analysis
Topic: NHTSA database includes reported negative crush?
Replies: 1
Views: 1705

### NHTSA database includes reported negative crush?

Q: In looking at the NHTSA crash test database site , I've noted several instances where one of the crush measurements was a negative value of significant magnitude. Can anyone explain why they report the value in this manner. All crashes are 30 mph or 35 mph rigid barrier impacts and in reviewing p...
Wed Jul 01, 2009 8:31 am
Forum: Collision & Trajectory Analysis
Topic: What is the appropriate rotating vehicle % drag factor?
Replies: 1
Views: 3094

### Re: What is the appropriate rotating vehicle % drag factor?

I came across an old post (8/31/98) with some additional information in response to a question on 'MU for rotation': Aug 1998: This is prepared in response to a question on the tire model in SMAC and equations to use in a spreadsheet program. As Monday mornings normally go, the stuff is hitting the ...
Tue Jun 30, 2009 9:40 pm
Forum: What Is?
Topic: What is the mSMAC SNAG option and why do i need it?
Replies: 0
Views: 1207

### What is the mSMAC SNAG option and why do i need it?

Q: What is the mSMAC SNAG option and why do i need it? A: Intervehicle friction, as simulated by original SMAC and EDSMAC, is in the form of simple Coulomb friction. It requires the existence of a force perpendicular to the contact region and it is proportional to that force. (For additional informa...
Sat Jun 27, 2009 2:06 pm
Forum: McHenry News!
Topic: Info on McHenry Software licenses
Replies: 0
Views: 3685

### Info on McHenry Software licenses

1) If you have updated to medit32 Thank you for your support! Starting 1 year from your initial receipt of medit32 (July/August 2009 or later) and 30 days prior to the renewal date, the software will notify you that you need to renew. Please be sure to renew before the expiration date and you can ta...
Thu Jun 25, 2009 5:19 pm
Forum: Collision & Trajectory Analysis
Topic: Heavy Truck Crash tests?
Replies: 0
Views: 1115

### Heavy Truck Crash tests?

The following are some references on Heavy Truck Crash Tests. This is no way comprehensive. Please add to the list. Just a few references I found within arms reach. Truck Crash Testing, E. Franchini, SAE 700411 Truck Tests on Texas Concrete Median Barrirer, T.J. Hirsch, PB 220 853 Heavy Truck Pilot ...
Thu Jun 25, 2009 5:12 pm
Forum: Collision & Trajectory Analysis
Topic: What is the appropriate rotating vehicle % drag factor?
Replies: 1
Views: 3094

### What is the appropriate rotating vehicle % drag factor?

To approximate the drag factor for a rotating vehicle, we caution against attempting to use any arbitrary % drag factors like: "50% to 80% of the standard drag factor" or "70-75% of the full drag". In our paper " CRASH-97 - Refinement of the Trajectory Solution Procedure " SAE Paper 97-0949, there i...
Wed Jun 24, 2009 10:38 pm
Forum: What Is?
Topic: What is the Static Stability Factor?
Replies: 0
Views: 7721

### What is the Static Stability Factor?

A simplistic viewpoint is frequently encountered in which the so-called " static stability factor ", or T/2H , is cited as the ultimate measure of the rollover resistance of a given vehicle design configuration. The static stability factor is, of course, derived on the basis of a rigid body, such as...
Wed Jun 24, 2009 2:21 pm
Forum: Misc Topics & News!
Topic: online resource for 3D models
Replies: 0
Views: 1543

### online resource for 3D models

if you are in need of a 3D car model, either for a computer program or as a scale model, try the following: 3D CAD browser is an inexpensive exchange network (~\$20 per model) http://www.3dcadbrowser.com/browse.aspx CAD Block Exchange Network - drawings of various objects FREE (not many vehicles) htt...
Tue Jun 23, 2009 10:11 pm