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From: Sun★Works
Originally Posted by Brownsound,Mar 13 2009, 06:10 PM
Rob, I've never heard of plastic and elastic "damage" before, but what I think you are talking about, plastic/elastic deformation, is a HUGE part of my Materials Engineering class.
There are two types of deformation: plastic and elastic. Elastic deformation occurs on a stress/strain graph linearly until it reaches it's Modulus of Elasticity, or yield strength. Plastic deformation occurs after the Modulus of Elasticity is passed, and arcs upward until the maximum tensile strength and then downwards until it finally breaks.
Stress = Force / Area
Strain = Stress / MoE = DeltaLength / InitialLength
This is pretty much what you are talking about.
This is why I missed Tilted Kilt last night, I had a test on this this morning
Reading this thread makes my head hurt... a lot of armchair engineering in here
There are two types of deformation: plastic and elastic. Elastic deformation occurs on a stress/strain graph linearly until it reaches it's Modulus of Elasticity, or yield strength. Plastic deformation occurs after the Modulus of Elasticity is passed, and arcs upward until the maximum tensile strength and then downwards until it finally breaks.
Stress = Force / Area
Strain = Stress / MoE = DeltaLength / InitialLength
This is pretty much what you are talking about.
This is why I missed Tilted Kilt last night, I had a test on this this morning
Reading this thread makes my head hurt... a lot of armchair engineering in here
But yes Brownsound, that was exactly what I was describing.
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Originally Posted by GPMike,Mar 13 2009, 08:02 PM
gpmike didn't he break his leg in that one am i correct
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