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In Reply to: Re: What is your authority on rigidity? posted by Sean_328i(East Bay) on January 15, 2001 at 21:06:22:
I'd guess the moonroof delete would save you about 15-20 lbs. Each seat, probably another 15 lbs.
I'd estimate total weight savings would be around 50 lbs. That is significant!
John,
I am not disputing your stand on this but i do remember from my Bachelor level Physics that it's the flexibility of a metal that determines it's strength, for a stronger body you would want more flexible metal. That is why steel is used which is the most flexible. As far as i know flexibility of any metal is described as the ability to come back to it's original shape and thus resist deformation, a concept opposite of rigid bodies. You would'nt want to construct your car of a rigid structure. Young's modulus.
PS: I meant the concept of elasticity
...elasticity has nothing to do with rigidity. The most rigid body would be die cast or forged, like a crankshaft.
Of course this would not be desirable for any number of reasons.
Flexibility and rigidity are in fact opposites from a structural standpoint. Would you want your crankshaft to be flexible? I think you would prefer it be rigid, right?
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