McHenry Forum - Crash Reconstruction & Simulation

Sept 2013 : NOTE: This post from April 2011 has been copied from thread Re: How can I calculate CRASH A & B Coefficients? to make this separate posting. Q: In calculating A & B Coefficients from crash tests which speed is correct to use, the test impact speed or the delta-v speed? Were the ...

Sept 16, 2013: This thread copied from 'member only' section to this section. I also found an additional thread How can I calculate CRASH A & B Coefficients? The other thread contains some additional information and some duplicate information. At some point I will merge these two topics (I don't...

Sept 10, 2013: MIT Technology Review: Researchers are using smart helmets and imaging to study brain injury risk in young football players over a season. by Susan Young Which begins: The end-of-August announcement that the National Football League will pay $765 million to settle a lawsuit involving ...

Sept 2013: While moving/sorting through office materials, I came across the Calspan announcement of Ray's second award from the IME: "Safety Award in Mechanical Engineering" The announcement was as follows: FOR IMMEDIATE RELEASE January 1971 BUFFALO, NEW YORK --- Raymond R. McHenry, a Corn...

Some additional information on the source of the documents in the CRASH3 Technical Manual : Most are from a familiar name here at McHenry Software , the name being Raymond R McHenry . Most of these documents are available on our website on McHenry Reports Sorted by Topic under heading: McHenry on CR...

Q: Does anybody here could help me to understand the equation from damage energy? Why the term c/2 at the equation is changed for "x"? and what exactly is "x" for two, four and six measurements in the equation. I'm trying to undertand the equation like development the equation, m...

Q: I’m involved in a low speed case and the opposing expert has said in so many words that using crush (based on NHTSA test data) isn’t real reliable and shouldn’t be used. I’m looking for papers that validate crush (i.e.-looked at crash tests with known speeds, did crush analysis, then compared the...

August 30, 2013: NY Times: NFL Agrees to Settle Concussion Suit for $765 Million The National Football League has agreed to pay $765 million to settle a lawsuit brought by more than 4,500 players and their families, largely closing the legal front in the league’s battle against accusations that it c...

August 12, 2013: Great article in the NY Times: A Black Hole Mystery Wrapped in a Firewall Paradox So Black Holes, those energy sucking things in space: Lets us say for the moment that you find yourself sucked into a black hole. What happens? Are you crushed? flattened? evaporated? burned up? Where ...

MIT Technology graphic: The Electric Car is Here to Stay

• In a single page simply graphical presentation, the folks at MIT Technology present the argument that EV's are here to stay!
  here's a couple of peeks:

  

  ev1.jpg (23.22 KiB) Viewed 3065 times

  

  ev2.jpg (18.86 KiB) Viewed 3065 times

Now see the full graphics at The Electric Car is Here to Stay