Search found 1799 matches
- Wed Apr 03, 2024 12:17 pm
- Forum: Simplified Momentum Analysis, PC-Crash, Virtual Crash
- Topic: WHY Use Simulation to “Test and Refine” Traditional Crash Reconstruction Results
- Replies: 1
- Views: 3916
WHY Use Simulation to “Test and Refine” Traditional Crash Reconstruction Results
WHY Use Simulation to “Test and Refine” Traditional Crash Reconstruction Results This topic is a follow-up on some other related topics: Should an Expert Rely Solely on PC-Crash for an Opinion? Simulation Analysis: Effects of Input Variations Classic Example of Sensitivity of Momentum Solutions The...
- Thu Mar 28, 2024 3:41 pm
- Forum: James Bond Spiral Jump Stunt
- Topic: Why We Call It The James Bond Spiral Jump by McHenry
- Replies: 1
- Views: 13705
Re: Why We Call It The James Bond Spiral Jump by McHenry
March 2024: Interesting coincidence. Earlier this year we were contacted by Chris Distin who's written a book on the movie with the stunt And the interesting coincidence: From the book a few items: The jump was filmed on the 1st of June 1974 , the 31st day of movie production. The patent had been a...
- Mon Mar 25, 2024 12:34 pm
- Forum: McHenry News!
- Topic: Raymond R McHenry, Pioneer in Crash Reconstruction
- Replies: 5
- Views: 13430
Re: Raymond R McHenry, Pioneer in Crash Reconstruction
March 2024, Ray is 95 and healthy and doing great.
- Unfortunately in June 2023, Connie, his wife and my mother, passed away.
- Mon Mar 25, 2024 12:13 pm
- Forum: Simplified Momentum Analysis, PC-Crash, Virtual Crash
- Topic: Is a Straight Line From Impact to Rest in Momentum Correct?
- Replies: 1
- Views: 7108
Re: Is a Straight Line From Impact to Rest in Momentum Correct?
March 2024: edited updated and added the graphics
- Sun Mar 24, 2024 11:24 am
- Forum: Collision Simulation, SMAC
- Topic: The Effects of Friction on EDRs and DeltaV
- Replies: 6
- Views: 29932
Re: The Effects of Friction on EDRs and DeltaV
March 2024, added mention and link For restitution effects, please see Effects of Restitution on the Application of Crush Coefficients for details on effects of restitution, which "reduces the residual deformation while increasing the total impact speed change". In this forum topic, we foc...
- Sun Mar 24, 2024 10:49 am
- Forum: Damage Analysis, CRASH
- Topic: What Speed Should I Use to Calculate CRASH3 A&B Coeff?
- Replies: 2
- Views: 5764
Re: What Speed should I Use to Calculate CRASH3 A&B Coeff?
Q: The argument behind the idea that we're getting to dV from damage and stiffness (and, of course, BEV) made me hesitate...maybe I read stuff wrong before and it IS dV we should be using. But, by my way of thinking, if I work it all the way back to Emori, for example, the input was always the spee...
- Sat Mar 23, 2024 1:33 pm
- Forum: General Topics
- Topic: Rollover Analysis: minimum speeds and roll velocity approximation
- Replies: 9
- Views: 12311
Re: Rollover Analysis: minimum speeds and roll velocity approximation
Q: (Posted to a Facebook forum) Can anyone here share a rollover formula? A: One of the responses was: During WREX 2016 a presenter gave a presentation on a new rollover formula. S=sqrt 13(d). The distance is from trip to final rest. I have used it several times and get within 5mph of the minimum sp...
- Sat Mar 23, 2024 11:58 am
- Forum: Damage Analysis, CRASH
- Topic: What Speed Should I Use to Calculate CRASH3 A&B Coeff?
- Replies: 2
- Views: 5764
Re: What Speed should I Use to Calculate CRASH3 A&B Coeff?
Q: Got into a discussion with someone and we ran into a "conundrum." It has to do with a reading of the various papers and such as it relates to stiffness coefficients. So say we have a set of crash test data and we want to find stiffness coefficients. The discussion hinges on the velocit...
- Wed Mar 13, 2024 6:36 pm
- Forum: msmac3D Licensee Notes
- Topic: msmac3D Ver 4.6.1 FEATURE HIGHLIGHTS, AVAILABLE NOW!
- Replies: 8
- Views: 21533
Re: msmac3D Ver 4.5.5 FEATURE HIGHLIGHTS, AVAILABLE NOW!
4.5.5 uploaded!
- Sat Mar 09, 2024 1:24 pm
- Forum: Damage Analysis, CRASH
- Topic: CRASH Damage Analysis Estimations at Higher DeltaVs?
- Replies: 0
- Views: 5149
CRASH Damage Analysis Estimations at Higher DeltaVs?
Q: I am attempting to determine what research exists into how the CRASH algorithm may/may not overestimate DV at higher levels (i.e. 75mph). In my research I have found 1982 DOT HS 806 152 Accuracy & Sensitivity of CRASH by Smith and Noga which appears to show good correlation in the mid 60's D...