But how thick are the frame rails is the question. A light car like that obviously wont have what an SUV would, but still...Wonder how a unibody would have fared in that wreck? Probably be shattered peices all over.
But how thick are the frame rails is the question. A light car like that obviously wont have what an SUV would, but still...Wonder how a unibody would have fared in that wreck? Probably be shattered peices all over.
MrDudeMan
Lifer
- Jan 15, 2001
- 15,069
- 94
- 91
well what i did was use the design of my truck, which is a certain grade of steel at about 1/4" thick. it comes in a sort of H with cross bracing every little bit, but as far as the actual pieces of steel, they wouldnt break apart like that at any less than my initially stated speed, and that is on my truck. i would venture a guess that my truck is thicker and wider than the audi in question.
edit: no pun intended
What about 1/8". I'll bet thats right around what that Audi has on the frame, 1/8" with crossbraces front n rear. Again, this is coming from never having been under an Audi, for all i know their built Volvo tough. I dont know.
MrDudeMan
Lifer
- Jan 15, 2001
- 15,069
- 94
- 91
1/8" is too thin. there are 3 things you design for when doing any type of loading...sheer & deflection are the most important...and 1/8" steel would pretty much fail very badly in even minor collisions. i would have a hard time believing any car is that thin in the frame. gimme a minute to see how that would change the impact sheer on the same piece of steel
edit: gotta get into my computer at work...need the max psi rating on steel to accurately calculate this
edit: gotta get into my computer at work...need the max psi rating on steel to accurately calculate this
MrDudeMan
Lifer
- Jan 15, 2001
- 15,069
- 94
- 91
ok, actually the third component, flexure, would fail at a remarkably lower speed than this could ever have happened at. flexure is the moment of a beam or member that is connected on both ends...sort of like a torque. anyway, assuming it was 1/8" thick and a square prism of 2 inches corner to corner (basically a hollow piece of steel..like what a frame actually is) i am coming up with 22.8kips (22,800 lbs) of resisting force per foot. if the car weighs roughly 3000lbs at, lets just speculate, an even distribution of 12 feet, which is 250 lbs per foot, it would break at roughly 110mph. so my initial was a little low...
Nebor
Lifer
- Jun 24, 2003
- 29,582
- 12
- 76
skyking
Lifer
- Nov 21, 2001
- 22,833
- 6,005
- 146
Live wood is a great deal stronger and more flexible than telephone poles, etc.
I witnessed a 70's muscle car, either a cuda or V8 dart, hit a pole near our farm. We were about 1200 feet away, and heard this car coming into a couple of twisties near the farm, so we looked up. He oversteered, overcorrected, and went into a left skid. The car took the pole at the fender/door junction, and it snapped very cleanly.
The cool part about it was the distance involved. It was long enough for that time delay of the sound to take effect. We hear the skid, and see the pole get clipped, then a fracton later, hear this nice <crack!>
To add insult to injury, it falls right across the roof, big old trough dent. The driver was not seriously hurt, but he went for the darwin award when he got out among the potentially live lines.
I witnessed a 70's muscle car, either a cuda or V8 dart, hit a pole near our farm. We were about 1200 feet away, and heard this car coming into a couple of twisties near the farm, so we looked up. He oversteered, overcorrected, and went into a left skid. The car took the pole at the fender/door junction, and it snapped very cleanly.
The cool part about it was the distance involved. It was long enough for that time delay of the sound to take effect. We hear the skid, and see the pole get clipped, then a fracton later, hear this nice <crack!>
To add insult to injury, it falls right across the roof, big old trough dent. The driver was not seriously hurt, but he went for the darwin award when he got out among the potentially live lines.
It looks like the car was stolen. If you look at the ignition there appears to be a shim used to crank it.
Originally posted by: AkumaX
saw this in there: "I guess calipers, painted red do not help- beep-beep 2004-03-19"
LOL saw that just now too. Damn that's insane.
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