Stiffness & Carbon Fibre

Here are our CFD links and discussions about aerodynamics, suspension, driver safety and tyres. Please stick to F1 on this forum.
louish49
louish49
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Joined: 14 Nov 2012, 20:17

Stiffness & Carbon Fibre

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Doing my A-level physics coursework, and i'm probably just being a bit thick/suffering from tiredness, but why is having a high Young's modulus important for a material that will make the best part of the car?

any help will be greatly appreciated

xxChrisxx
xxChrisxx
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Joined: 18 Sep 2009, 19:22

Re: Stiffness & Carbon Fibre

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Should we really be doing your homework for you? You must have done at least some research and investigation for this.

What do you think?


Also just as a hint, the premise of your question is wrong.

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flynfrog
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Joined: 23 Mar 2006, 22:31

Re: Stiffness & Carbon Fibre

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louish49 wrote:Doing my A-level physics coursework, and i'm probably just being a bit thick/suffering from tiredness, but why is having a high Young's modulus important for a material that will make the best part of the car?

any help will be greatly appreciated
do you have any grasp of basic vehicle dynamics? OR at least why chassis stiffness and light weight are important?

xxChrisxx
xxChrisxx
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Joined: 18 Sep 2009, 19:22

Re: Stiffness & Carbon Fibre

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flynfrog wrote:
louish49 wrote:Doing my A-level physics coursework, and i'm probably just being a bit thick/suffering from tiredness, but why is having a high Young's modulus important for a material that will make the best part of the car?

any help will be greatly appreciated
do you have any grasp of basic vehicle dynamics? OR at least why chassis stiffness and light weight are important?
Why would you need to?

As it's written it's a pure materials question, and that doesn't have to relate to racing cars. Also as asked, it shows a lack of understanding about why you would select a material based on it's properties. It may just be a poorly worded question.

It's also worrying that someone has come on to a forum ask for help with coursework, without demonstrating that they have done any work themselves. Especially with the obvious urgency of the OP.

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flynfrog
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Joined: 23 Mar 2006, 22:31

Re: Stiffness & Carbon Fibre

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xxChrisxx wrote:
flynfrog wrote:
louish49 wrote:Doing my A-level physics coursework, and i'm probably just being a bit thick/suffering from tiredness, but why is having a high Young's modulus important for a material that will make the best part of the car?

any help will be greatly appreciated
do you have any grasp of basic vehicle dynamics? OR at least why chassis stiffness and light weight are important?
Why would you need to?

It's a pure materials question, and that doesn't have to relate to racing cars. Also as asked, it shows a lack of understanding about why you would select a material based on it's properties.

It may just be a poorly worded question.
I am confused as to why the chassis is the best part of the car when the wheel nut is far better.

louish49
louish49
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Joined: 14 Nov 2012, 20:17

Re: Stiffness & Carbon Fibre

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clearly you're all far too stuck up to help me.. theres nothing online about the actual reason why it needs to be stiff..

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Tim.Wright
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Joined: 13 Feb 2009, 06:29

Re: Stiffness & Carbon Fibre

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Mate, there is so much information online regarding this its not funny.
Not the engineer at Force India

louish49
louish49
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Joined: 14 Nov 2012, 20:17

Re: Stiffness & Carbon Fibre

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Tim.Wright wrote:Mate, there is so much information online regarding this its not funny.
i cant find anything.. and to the people saying i havent researched, i dont quite know what they're basing that on..
maybe im just looking in the wrong places.. any chance you could point me towards anywhere with the answer?

Lycoming
Lycoming
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Joined: 25 Aug 2011, 22:58

Re: Stiffness & Carbon Fibre

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http://lmgtfy.com/?q=youngs+modulus

http://lmgtfy.com/?q=stiffness

Seriously, you only need the first link from those two sources. You don't even have to scroll down. You don't even have to look at any of the other results.

You obviously either haven't searched, or did an exceedingly poor job of it.

Tommy Cookers
Tommy Cookers
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Joined: 17 Feb 2012, 16:55

Re: Stiffness & Carbon Fibre

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louish49 wrote:clearly you're all far too stuck up to help me.. theres nothing online about the actual reason why it needs to be stiff..
for the last 30 years the rules have made F1 cars flat-bottomed, and forced suspensions to be very stiff
without an outstandingly stiff structure the cars behaviour could not be optimised
cfc has a very high E relative to its low density

louish49
louish49
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Joined: 14 Nov 2012, 20:17

Re: Stiffness & Carbon Fibre

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Lycoming wrote:http://lmgtfy.com/?q=youngs+modulus

http://lmgtfy.com/?q=stiffness

Seriously, you only need the first link from those two sources. You don't even have to scroll down. You don't even have to look at any of the other results.

You obviously either haven't searched, or did an exceedingly poor job of it.
by why is it important in f1?!

Lycoming
Lycoming
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Joined: 25 Aug 2011, 22:58

Re: Stiffness & Carbon Fibre

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from the first result of the second link I posted:

"A high modulus of elasticity is sought when deflection is undesirable"

Now, where might that be true in an F1 car... If you can't figure that out on your own....

louish49
louish49
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Joined: 14 Nov 2012, 20:17

Re: Stiffness & Carbon Fibre

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Lycoming wrote:from the first result of the second link I posted:

"A high modulus of elasticity is sought when deflection is undesirable"

Now, where might that be true in an F1 car... If you can't figure that out on your own....
cant put it into physics words on this little sleep, no

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mep
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Joined: 11 Oct 2003, 15:48
Location: Germany

Re: Stiffness & Carbon Fibre

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You should fail your A-levels....

Lycoming
Lycoming
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Joined: 25 Aug 2011, 22:58

Re: Stiffness & Carbon Fibre

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Well I didn't want to say it, but, yea.

If you plan to go to university, not working well enough to figure this out on little sleep will kill you. Besides, now you're asking me to just straight up give you the answer, which is kind of silly since I already have.