Smart Car or Death Trap?

[trojan]

actually you're right, it's not entirely the same, it's more like running backwards into the wall at 300, which is worse but add to that there's the sandwich effect:

for same, imagine you're parked nose up to the wall and another dually hits you from behind at 300... that IS the same

Which proves Boost's point.

[Hoodlum]

20 tons at 30 mph gives 600 tm
your ute weighs 2t therefore it's the same as hitting a immovable wall at.....

300mph....

You were saying?

The same force that hits the car,truck, or whatever,and say it is the 2 ton dually,and is the same force as hitting a wall at 300mph,wouldn't it be the same force on the front of that dump truck? I don't have a dog in this fight, but wouldn't the dump truck look a lot worse if it hit a 2 ton dually running 300mph? Wouldn't that technically be like a dually hitting the dumper or a wall at 300? I understand your point trojan,but I have seen a car t boned by a semi running 60,which in according to your calculations should be like hitting an immovable oblect at 600mph...The driver survived, and the car was not totally flattened like it would have been by hitting something at 600mph...I have seen what cars look like after being dropped from planes and hitting the ground at terminal velocity which is way less than 600mph, and they looked much worse than the t-boned car....
Hoodlum
Hoodlum

[trojan]

Hood, in your example the car could move

[trojan]

I guarantee you I'd have come out of that collision better in my dually than that small car did and if you wish to try and argue that point feel free. I need a laugh tonite.

Yep, thanks for that, I just got some tricky electronics/software I've been working all week on to purr like a kitten so I'm already in a good mood, so I didn't really need that laugh but thanks anyway

[fabr]

So does the front truck add to to that is the effect of time over distance. THe dually is twice as long and has more structure to crumple.

[trojan]

the front truck is assumed to not move or move insignificantly, as are the weights and speeds assumed an no brakes, just to make the model simple

The dually would just be a bigger lump, the ramming truck is 10 times it's weight at least.

[fabr]

No one is saying the forces acting on the vehicles would be different. The bigger lump(dually compared to a small car) and the time taken to crush it tho  is what makes the dually much more likely to make the crash survivable. The crumple zone effect expanded. You do understand that I know. Also the much higher seating position of the dually as compared to the small car is advantageous to survivability.

[trojan]

you would have a point if, at impact, the 20t truck was going ~ 7 mph, you would probably survive.
By the damage on the trucks front (the right side chassis looks effected), it looks like it hit at about 30 or more?

[fabr]

Try as you might you aren't convincing me of a thing till you produce a pic of a dually crushed like that even at 30 mph.

[trojan]

yet I'm the only one providing any reasoning

[fabr]

I posted proof of a small car . Your turn.

[trojan]

35 mph broke it's back....



it doesn't matter which passenger car when you are dealing with that much momentum and the other truck made sure it basically ALL went into the car... squish!

Fab I'll let you keep score

[fabr]

1-0 ,my favor, till you post up something relevant that shows a dually in the condition of that small car but even though you continue to compare apples to oranges your vid shows a passenger compartment basically untouched at 35 MPH . So what do you think speed would be required to do the same damage to the dually as the small car sustained in my posted pic ? Oh yeah,didn't you say 300 mph somewhere?

[Boostinjdm]

Ok twinkle toes (Fabr), quit dancing around it.  You showed a pic of a crushed car between two dump trucks.  How bout YOU show US a non-crushed dually between two dump trucks to prove your unsupported point.

BTW, from what I could find, the GVW is 62,000lbs for those trucks.  At 35mph, how much force do you suppose that would exert on impact?

[fabr]

 Are you guys seriously trying to say that it takes the same energy to crush a vehicle with at least twice the mass,a true frame, and over twice the length as that small car to that condition? It sure seems like you are.  You need time to rethink this?