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Exhaust Car Jack

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#1 jump



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Posted 29 October 2011 - 11:40 AM


im undergraduate student from Malaysia...

we have to design car jack for our project..
so we decide to design exhaust car jack..


we are facing problem on the calculation of pressure on the jack

which formula/ laws need to use...

anyone can help?

Sry for my bad English

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#2 PegoAC


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Posted 29 October 2011 - 01:20 PM

Hello - the balloon is a pressure vessel
the force of the car must be equaled by the force in the balloon pushing up.
Pressure equals force/area.
find the cross sectional area of the balloon (pi x radius x radius) - the max radius parallel to the ground.
Lifting half the car from the side use half it's mass x gravity to give the force.
This allows the pressure to be calculated
use pressure vesel calculations to find the stress produced in the material.


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