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WaCKy-Angel
post Jun 9 2014, 01:10 PM

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QUOTE(hong3831 @ Jun 9 2014, 11:02 AM)
i think god still wont help if human crash by milo tin car.
car made tougher because to survive driver and passenger in the car.
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cars made safer with airbags, not by making it harder
hong3831
post Jun 9 2014, 01:45 PM

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QUOTE(WaCKy-Angel @ Jun 9 2014, 01:10 PM)
cars made safer with airbags, not by making it harder
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you need strong/tougher chasis rather than airbag...although airbag is important as well.
btw, a accident photo like this cannot judge a car.

Attached Image
kadajawi
post Jun 9 2014, 08:22 PM

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You need a structure that is strong enough so that the area where you are sitting in won't be reduced in size. If the passenger area collapses you are in deep trouble, all the airbags in the world can't safe you.

However, the second thing that is important is that you, the passenger, slow down gently enough so that you don't get internal injuries. Walking into a big pillow is less painful than walking into a wall at the same speed. Your head shouldn't directly impact the hard steering wheel, the b pillar, windows, ... that's what airbags are for. They are still quite hard, but soft enough to slow you down at a reasonable speed. They also only work in conjunction with the seatbelts, which are also there to slow you down gentle enough. When a crash is sensed explosions go off in the seat that make the seatbelt pull you into the seat. The seat may move into a better position (Volvo for example). The seatbelt is also locked, it can't be released. However there are points in the mounting that will tear, so when you do crash, and the body pulls at the seatbelt with full force, the seatbelt will be released. The forces are reduced.

That is also the task of the crumple zone. Slowing down the passengers in a gentle enough way. Imagine driving a car that is so tough that the passenger area comes to a full stop immediately. That deceleration is way too high for the passengers, and they will die. Even with airbags, since the airbags can't take away all the energy.
bananadriver
post Jun 9 2014, 09:58 PM

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QUOTE(kadajawi @ Jun 9 2014, 08:22 PM)
You need a structure that is strong enough so that the area where you are sitting in won't be reduced in size. If the passenger area collapses you are in deep trouble, all the airbags in the world can't safe you.

However, the second thing that is important is that you, the passenger, slow down gently enough so that you don't get internal injuries. Walking into a big pillow is less painful than walking into a wall at the same speed. Your head shouldn't directly impact the hard steering wheel, the b pillar, windows, ... that's what airbags are for. They are still quite hard, but soft enough to slow you down at a reasonable speed. They also only work in conjunction with the seatbelts, which are also there to slow you down gentle enough. When a crash is sensed explosions go off in the seat that make the seatbelt pull you into the seat. The seat may move into a better position (Volvo for example). The seatbelt is also locked, it can't be released. However there are points in the mounting that will tear, so when you do crash, and the body pulls at the seatbelt with full force, the seatbelt will be released. The forces are reduced.

That is also the task of the crumple zone. Slowing down the passengers in a gentle enough way. Imagine driving a car that is so tough that the passenger area comes to a full stop immediately. That deceleration is way too high for the passengers, and they will die. Even with airbags, since the airbags can't take away all the energy.
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great explanation here. just imagine putting an egg into a hard metal box. then drop it from the 2nd storey. the egg (you) breaks inside the metal box upon impact with the ground below. now put an egg wrapped in styrofoam and drop it. the chances of the egg not breaking is higher. this is the simplest explanation on the crumple zone theory.
samftrmd
post Jun 9 2014, 10:06 PM

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I thought Alvin and Vivian lol.

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