Recent content by Jameseyboy

When the disc rotational speed reaches 1 RPM, it needs to be capped but with smooth deceleration. The materials are steel and cannot be changed. I'll do some more research on magnetic brakes. I do have a little room to play with; my shaft is around 5cm radius, and my inner tube is around 16cm...

The 200kg is basically the mass of the plate + its loaded elements. Are you talking about eddy brakes? I understand they can be calibrated such that they are applied at a particular speed and effectively maintaining it. I am going to need to back everything up with calculations so the simpler...

Hi, I am looking into a braking system which can limit the rotational speed of a platform; the assembly consists of a fixed vertical shaft and a rotating outer tube (seated with bearings). The platform diameter is >5 times larger than the tube. I have looked into the typical band brake...

So I am planning on doing an FEA for a rotational component as part of university project. I am fairly confident about the analysis itself, meshing, convergence, etc.. I feel I am capable of setting up an accurate model. However, I need to validate my study with a simple preparatory FEA which...

Hi Guys, I am needed to work out the the amount of pressure an Air Motor will need to provide to keep an object on a slope in equilibrium. I have worked out the the force DOWNSLOPE of the object in Newtons- but I am unsure of the next steps to find an appropriate air motor (or what kind of...

Hi, I have 3 values for data set 1 (1a, 1b, 1c), and 3 values for data set 2 (2a, 2b, 2c). (assume set 1 are the ones being compared to) I know that to work out the error percentage for 1a and 2a -- it is the difference (of 1a and 2a) divided by 1a x 100. I can do the same with 1b and 2b, and...

I hear you mate, no problems. Thanks anyway

I've been given the angle between Gauge A and the axis of the Shaft (subjected to torsion) This is what the 28 degrees is When I've drawn the circle, I get the angle of -16 degrees from the Principal direction and the x axis. I don't understand how these two angles work together- do I add them?

3. I have been given Φ as 28 degrees. I have the orientation of the the strain gauges NOT relative to the 28 degrees

I converted the strains to εx, εy and γxy (2nd eq. 1st screenshot) I used the εA, εB εC values from before to find the principal strains ε1 ε2 (eq 4a) So I plotted this, and I work out the angle θ = -16.26 degrees. However, Where does my value Φ come into it? My value is given as 28 degrees...

Hi Guys, I have been given a lab report to complete on Torsion of a beam. - Beam was subjected to torsion under increments of weight - Strain gauge rosette was placed, A B and C where there is 90 deg between A and C, B at 45 deg in between. - The angle from Gauge A and the "x" axis was given...

Oh dear, had a complete 'idiot moment'. Thanks dude. I've actually been googling trying to find an online differentiation calculator but I'm sure that some of them aren't giving the correct answers- do you know of any which are reliable?

Homework Statement Homework Equations After looking through this on Wiki, I'm a little confused as to how these partial fractions are multiplied out. Is there a rule or something for this? With simpler partials I can do it but this one is something else! The Attempt at a Solution

Fantastic. Cheers

Right. So it's not the value I.e. Going from +2 to -2 meaning 4 ---> it's actually the absolute value from the x axis- so '2'?