Search found 1788 matches

by MSI
Tue Dec 29, 2020 8:10 pm
Forum: Specs, Crash Tests, Etc.
Topic: Effective Drag aka Tumble Number for Rolling vehicles
Replies: 1
Views: 1448

Effective Drag aka Tumble Number for Rolling vehicles

On the Napars Facebook page they brought up Effective Drag for a rolling vehicle: This is a topic which clearly has a "seminal" paper that everyone handling crash analyses should be familiar with SAE Paper 890859 One might also do well to review Searle's 1983 SAE paper on pedestrian crash ...
by MSI
Tue Dec 29, 2020 10:28 am
Forum: Vehicle Safety
Topic: Infotainment Data used to catch a criminal
Replies: 0
Views: 5012

Infotainment Data used to catch a criminal

Just saw this posted up and figured time to start posting up articles on infotainment and other data in your vehicle. So here's a start! Think it is great (that crimes can be solved!) Insecure wheels: Police turn to car data to destroy suspects' alibis Looser privacy standards for vehicle data are a...
by MSI
Mon Dec 28, 2020 4:28 pm
Forum: General Topics
Topic: 18% Restitution at 35 MPH??
Replies: 4
Views: 5199

Re: 18% Restitution at 35 MPH??

A Response posted to Facebook NAPARS page: Q: So maybe the tires are getting involved at 35, but not 30? Interesting. Our Response: That is possible. Also sorting through the test result data might allow sorting with respect to tire size, overhang and whether tire deflated or not Then it will might...
by MSI
Mon Dec 28, 2020 4:27 pm
Forum: General Topics
Topic: 18% Restitution at 35 MPH??
Replies: 4
Views: 5199

Re: 18% Restitution at 35 MPH??

Dec 23, 2020: New post on Restitution by NAPARS/Wade on Facebook : Monson and Germane reported on a bunch of full-barrier crash tests at 30 and 35mph, and found a higher restitution value for the higher speeds, more or less across the board . This is contrary to our expectation that e should go down...
by MSI
Thu Dec 24, 2020 1:10 pm
Forum: Simplified Momentum Analysis, PC-Crash, Virtual Crash
Topic: More Discussion on issues with PC-CRASH type simplified momentum solutions
Replies: 1
Views: 5835

Re: More Discussion on issues with PC-CRASH type simplified momentum solutions

We recently responded to some questions on simulation posted to the INCR Forum Simulation Analysis effects of input variations and it included our issues with crash simulation programs which use simplified momentum solutions. These include PC-CRASH , Virtual Crash , Planar Impact Models , and others...
by MSI
Thu Dec 24, 2020 11:08 am
Forum: 3D Vehicle Simulation, msmac3D
Topic: Simulation Analysis: Effects of Input Variations
Replies: 1
Views: 10146

Re: Simulation Analysis: Effects of Input Variations

Another response on the INCR thread included the following statement/question on Simulation: Q: For those who are doing the simulations, correct me if I am incorrect on this, but if you do a simulation, and it overlays the physical evidence, vehicles hit in the correct locations, stop in the correct...
by MSI
Wed Dec 23, 2020 11:32 pm
Forum: msmac3D General Q&A
Topic: 2020 Year End Special Pay-When-You-Use msmac3D!
Replies: 1
Views: 1216

Re: 2020 Year End Special Pay-When-You-Use msmac3D!

Be sure to see a new feature rolling out in Jan 2021:
by MSI
Wed Dec 23, 2020 4:02 pm
Forum: 3D Vehicle Simulation, msmac3D
Topic: Simulation Analysis: Effects of Input Variations
Replies: 1
Views: 10146

Simulation Analysis: Effects of Input Variations

New: Use this link to go to the latest post on this thread This is response to the question posted on INCR about Momentum which morphed into a question on simulation: " I wonder how many of the simulation program users have played with some of the unmeasurable factors that go into the analysis...
by MSI
Wed Dec 23, 2020 9:50 am
Forum: Simplified Momentum Analysis, PC-Crash, Virtual Crash
Topic: PC-CRASH: How Many % May An Investigator Be Wrong with pc-crash?
Replies: 6
Views: 10753

Re: PC-CRASH: How Many % May An Investigator Be Wrong with pc-crash?

On the other forum an additional response was posted about the case wherein the police used pc-crash to "prove" who was on the wrong side of the road. Our response: I am sorry for the many issues. I think it is time to use email for further questions/details/etc and to expedite responses. ...