I'm /guessing/ that the 120 dB at 2m is for a PSV venting to atmosphere. Compared with say an IC engine that is pretty small beer, so you should be OK with truck type exhaust pipe. To get around the organ pipe effect you could add a Helmholtz resonator, or an expansion/contraction muffler, which...
Superficially it looks similar because it is a regular truss with a point load, but in general there is little obvious similitude between a force diagram and the geometry of a structure. Here's an example
Unless you know how to construct a force polygon at a joint I don't see how you can...
waross- yes I agree in the absence of friction etc then the shape of the path (ignoring the loop) is irrelevant. Brachistocrone is optimising for minimum total transit time, not exit velocty explicitly.
Personally I'd steal my grandson's Hotwheels and do some experiments rather than trying to...
Well, if you finally get around to doing it properly you should get something like this for the bar forces. I got the geometry by cursoring figure 8
Coord=[0 185 0;0 0 0; 206 185 0;206 28 0;399 185 0;399 52 0;596 185 0]; % coordinates of nodes
Con=[1 2; 2 3; 3 1; 4 2; 3 4;3 5; 4 5; 4 6; 6 5;5...
" I assume the PSV discharging into a pipe would attentuate the noise for nearby operators, but don't have any experience to suggest what an actual attenuation value would be."
A dangerous assumption. That depends on a host of factors, but you have basically created a steam powered organ pipe...
So, ignoring aero drag, m*g*h=1/2*m*v^2+integral F dx, and we want to maximise v. F is the friction force. So there's a tradeoff between minimizing F (ie low radial accelerations) and total path length. So a big part of the problem is deciding on the optimal shape and size of the loop. A big...
The diagram is, AS THE ORIGINAL TEXT states, a superposition of all the joint diagrams, and I have explained how to construct it in one of my posts. I don't teach stupid.
Here's the Australian spec for grid forming rather than grid following inverters. https://aemo.com.au/-/media/files/initiatives/primary-frequency-response/2023/gfm-voluntary-spec.pdf?la=en&hash=F8D999025BBC565E86F3B0E19E40A08E
I'd be very wary of using a reference that labels a force diagram as a stress diagram.
Anyway he's constructed a Cremona/Maxwell diagram . This is good. I'm not crazy about his notation, should have used Bow's.
The key to determining the forces in a and b is shown in the little triangle at the...
Each book will have a torsional rigidity (about the axis into the screen in your picture). As you stack them up there is a compressive load due to the weight of the books, and at some point you will get Euler elastic buckling, which for self weight was first correctly solved in 1912. This is...
Possibly, there again this will have the worst performance of any possible configuration except for flapping wings. People in the past have got into trouble for designing cruise missiles and the like (which is not very difficult if you are after minimum viable product performance), I think we...
In which dik either demonstrates a complete misunderstanding of %ages, or knows damn well what he is doing and uses them to mislead (a politer version of what I initially wrote). See post 132. The %age is dropping slightly, the coal use is increasing, as Tugboat said.
B&K produce an excellent series of manuals and technical notes on signal analysis in general and vibration monitoring. The HP/Agilent intro is also fine...
True but does not support your easily disproved claim. Their coal consumption is increasing. 95% of the coal power stations being built are Chinese. Here's the graphs for China
