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Beam stiffness
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Posted by: benNZ

09/04/2006, 04:03:08

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Does anyone know how to calculate a value for k (the stiffness of the steel beam) by knowing the 2nd moment of area and youngs modulus for steel
Thanks







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Re: Beam stiffness
Re: Beam stiffness -- benNZ Post Reply Top of thread Forum
Posted by: zekeman

09/06/2006, 09:13:09

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The curvature of a beam( 2nd derivtive of the deflection) is equal to
M/EI or
d(dy/dx)/dx=M/EI
M= moment applied to beam at x
E= modulus of elasticity
I= 2nd moment of area or moment of inertia
From this you can get the information you need.






Modified by Administrator at Sat, Sep 09, 2006, 08:30:43


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Re: Beam stiffness
Re: Beam stiffness -- benNZ Post Reply Top of thread Forum
Posted by: Kelly Bramble

09/04/2006, 08:33:04

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Stiffness is equal to force divided by deflection. Stiffness is an "intensive property". Meaning that is does not depend on the size or amount of material in the section.






Modified by Administrator at Fri, Sep 08, 2006, 19:50:13


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