Thanks. I have put these into the formula and have got..
Moment of inertia;
I=(π×D^4)/64
I=π/64×(〖0.0253〗^4-〖0.0213〗^4)
I=1.000797×〖10〗^8 m^4
W;
W=F2/2
W=268.05/2
W=134.03N
Deflection;
y=(Wc^2)/3EI(c+l)
y=(134.03×〖0.58〗^2)/(3×(7.03×〖10〗^10)×(1.000797×〖10〗^8))(0.58+0.36)
y=0.0201
Note...
Thanks again for your help.
I have realized that I needed to half both forces as the lever is made up of two 'beams'.
This then gives me a moment of;
M1(0) = + 96.35*(0) - 191.39 = -191.39 (N*m)
M1(0.36) = + 96.35*(0.36) - 191.39 = -156.46 (N*m)
Which gives me a stress of
1.978E+08. This...
There is a hook on the lever at point A, which is to attach to a bar. The lever can pivot on this point around the bar. Therefore this has been treated as a hinge.
The two forces have been found through research.
The lever is on a hinge at the left, P2 is a human downward pull force, and P1 is where an object is being compressed.
The moment I have used in the stress calculation is M1(0.36), as this is where I believe the stress will be acting(?) So for...
Thanks for all your responses.
Apologises, I got my units mixed up! It should read mm, not m. The lever is a fixed hinge on the left hand side.
My bending moment has be re-calculated as..
M(x1) = + RA*(x1) - MA
M1(0) = + 192.65*(0) - 382.70 = -382.70 (N*m)
M1(0.36) = + 192.65*(0.36) -...
Thanks for that, my mistake!
However my calculations are still coming out at 3.955E+11, as opposed to the 2.1E+8.
Seems like they are still quite a bit different, any ideas why this could be?
I have ran an FEA simulation on a lever to work out the stress on the part. I have now started doing some hand calculations to validate the software results and am struggling to get the values to match up. I am unsure whether my calculations are wrong, or whether the software is incorrect.
The...
I have ran an FEA analysis on part screenshot below. I wanted to do some hand calculations to validate the results. What formula should I use to calculate the stress?
No, this is additional work I wanted to include but needed some guidance on what formula to use. No worries if you can't assist, its not essential work.
The CoG of the block is in the centre of the block, and I assume the block will topple at the bottom right point?
I am unsure what formula to use to work out the equilibrium and toppling?