That's right, the magnetic forces produce magnetic pressure which is distributed along the surface. It looks like I am getting some heat for not presenting the problem to its fullest, although my initial intent was to show, what I believed was a simplified version of the problem, as I was just...
I am glad I can count on you guys to have a look at this problem with another set of eyes as ineria4u has mentioned. Basically, let me spill some more input so we can eliminate some of the questions. This short column (strut) is basically in a vertical position. so the weight factor is...
I have found the right beam-column formulas and looks like everything looks good. As zekeman has mentioned I should not have a bucking problem of the main column because my slenderness ratio is 13.5. I have yet to include the weight of the system.
I was also thinking of another approach, man this is getting long. What if simply use just the 48KN side load with a simply supported beam and calculate the deflection. Then, convert the deflection to column problem with an eccentric axial load by deriving the eccentricity, following with the...
I think what I am missing is an equations for critical force for a beam-column problem. My Timoshenko book on mechanical of material only refers me to his other book on theory of elasticity which I don't have. Can anybody point me to a web site which has the equation, or post in on the forum...
I really appreciate everybody's help, especially ineria4u. I will crunch some numbers and get back later on if I am still puzzled, but at least now I see the light. THanks.
THanks for the help inertia4u. From what I undestand the first step would be to do a simple beam deflection calculation with the beam length set up to half of the length (1m) and a 48kN load, but I am not sure I understand the second part and how to apply that to the buckling analysis using the...
Yeah I see what you saying, but the loads that come from the four directions from the four beam phases are 90deg apart and with the same magnitude, sort of squishing the beam. Then the second part is the axial (compression) loading from both sides with different magnitude than the first four...
I have been trying to figure this out for a while and am having a problem with putting this together. Here is the setup. I have a long square hollow beam (L=2m, h=w=0.3m, t(wall)=0.5in), capped of on both side with the same thickness plates. Its loaded in compression as well as there is a...
Yes, the units are micro-inches, and it seems like I am asking for the impossible. I am now thinking that as btrueblood mentioned I would be able to slow the rotation to possibly 0.5 rpm. It is basically a copper disk, and the path that is being abraded is approximately 1cm wide. Currently I...
Thanks for the interest. The disk spins at maximum of 500rpm, which based on diameter gives you 12 m/s surface speed, but most of the time it would operate between 5-7 m/s.
I am not sure if this is even possible, but if so it would definitely be of use to me. I have spent some time looking into ways of measuring (in situ) surface roughness (Ra) of a rotating Cu disk, to determine changes in surface roughness with time, while is it being abraded. Since this...
I am not sure if I am in the right forum for this question, but I have been looking around for this for quite some time and can not find it anywhere.
I am in search for a small DC liquid (water) pump (12-24V DC) that will be able to operate at ambient temperature but with water @ 25-90 deg C...
I have the following problem and would appreciate any input on the subject. I have a recirculating (low preassure) CO2 system, driven by a blower, and at one point am adding steam through a nozle into the main tube (d = 2.5in). I am using a small (2kW) steam (sauna) generator. At this point...
Thanks a lot Andy. When in comes to Davies Craig electric pumps, I was going to use one on my project, but the head pressure on the pump is really low, and just did not suit my application. I don't know what the problem with the pump was, but maybe because of fouling the flow rates are reduced...
I have worked out a thermal model to predict steady state (SS) temperature distribution for a TEFC machine based on already existing models created for example by P.H.Mellor. I would like to estimate the transient response, or at least the max winding temperature under a higher transient load...
I am aware that this is a very broad question, but was wondering if there is an approximate method to evaluating a needed radiator size? For example, lets take a 200hp, turbocharged engine, 1.8L, 4cyl motor. I know there are lots of variables in this problem such as the coolant flow rate, air...
Sorry for not being specific enough. I am looking for an average flow rate, and possible the maximum also, in particular for the two engines that I have specified. I am talking about the radiator coolant output temperature, before it enters the engine and after it has been cooled. Hope this...
