Hi people, i am in the process of designing a timber beam to eurocode 5, for university. One of the formulas used to calculate a critical factor, requires the value of torsional moment of inertia, and i have looked everywhere and cant find it. The shape of the beam is rectangular and as i say, the formula i need requires this particular value, i dont know if it is called something else but can anyone help???
2006-11-21 06:51:40 · 3 answers · asked by Tom1983 1 in Science & Mathematics ➔ Engineering
You can find it using the general bending formula as related to torsion (twisting) rather than bending.
T/j = G/Theta x L = Shear stess/Radius
The folowing link explains much better than I can.
http://www.freestudy.co.uk/c105.htm
2006-11-21 07:36:06 · answer #1 · answered by Jimbobarino 4 · 0⤊ 1⤋
I think this means just the "moment of inertia" which is defined as the integral of MR^2 where M is the mass and R is the distance from the axis of rotation.
The moments of inertia for common objects and shapes are easily found
I think the one you want is the solid cuboid in the reference I have given
2006-11-21 07:11:55 · answer #2 · answered by Mike 5 · 0⤊ 1⤋
Yes it is also know as
Sphincter lickus
2006-11-21 06:55:17 · answer #3 · answered by Anonymous · 0⤊ 3⤋