The question should be more accurate. You have got a centrifugal air blower driven by a Universal AC-motor from normal mains supply. How will the typical flow/pressure characteristics look like? A Universal AC-motor got variable speed. A typical example of such an air blower is the motor of a...
You can not get a magnetic field anything near 400 T. As you write. Metglass saturates at about 2 T so you cannot get above that.
In air you can get higher magnetic field strength. Posibly quite high with pulse currents, but I doubt 400 T in normal applications. Super conducting magnets used in...
I have looked for the solutions for a point load to one side of the ring and a distributed rectangular load to the other side. I cannot find that in Roark's book, but it seems to be twice in the tables from Kittel supplied by robyengIT above.
I find it in the Kittel tables as "load case 2" and...
Thanks for the comment dhengr. Actually I use the rings for more purposes and often with more ropes or webbing going in to them. We also use this special hook in our gym to reach attachment points near the ceiling - you may like to know that it exists for other purposes...
robyengIT, thanks for this very detailed information with many cases.
For this special case I have found a reference with an analytical solution here:
Link
When the wire diameter is low compared to the ring diameter, then the max moment of the wire should be:
M = R x F / pi (robyengIT...
Thanks for reply.
I don't think I get this right.
When I look up the Stainless Steel A4-AISI 316 Marine Grade I get about 600 MPa of tensile stress. If I assume this to be the elastic stress, then I should get plastic deformation just above 60 kgf. But I measure it to be much higher level -...
Before I even considered calculating, and for a small project I ordered two kind of steel rings from here:
http://www.gsproducts.co.uk/stainless-steel-roundrings/
Some 4 x 40 mm rings and 5 x 50 mm rings, and they have specified breaking strengths of 800 kgf and 1600 kgf.
I decided to make...
I have seen websites from several agents selling eye bolts and eye nuts, with different specification on side load. The geometry can vary too. But quite many agents (and perhaps manufacturers) do specify 50% load at 90 deg. All just say no load to the side parallel to the center line of the eye...
Thanks for the replies.
I hoped for an easy solution, but apparently this question is more complicated than I anticipated. So I suppose I need a qualified structural engineer for this. I have tried to look for Whitmore, but It did not help me. Please note, that I am not a structural engineer...
XR250 - I think the DIN 580 standard specifies a maximum of 45 deg. load. However most manufacturers specify half load to the side eg. 90 deg. Please look at the link in my post.
Dear Sirs
Please see attached drawing.
I am going to use a M12 eye bolt DIN 580. And the force is applied parallel to the base plate. You can find specifications on the eye bolts here:
DIN 580 Eye bolt spec
The WLL for the eye bolt is 1700 N, and normally the breaking strength is 5 times...
Vzeos
Thank you for this explanation and the link.
I guess, that when you only have 3-4 diameters of pipe after the low inner diameter of 41 mm, a large portion of the kinetic energy is lost. As you say - normally you need 10 to 20 diameters for the pressure to recover. At 49 l/s in the 41 mm...
vzeos, thank you for clarifying this issue regarding the orifice. Yes, I have been comparing apples and oranges. However, according to this reference: http://sti.srs.gov/fulltext/tr2001361/tr2001361.html
For the 50mm/40mm case the permanent pressure drop should be about 38% of the near orifice...
Hi Vzeos
Thank you for your help in this matter. And how you may change k in relation to S for a particular hose type.
I should like to pay attention on more to my first problem regading the eFunda calculation on this site: http://www.efunda.com/formulae/fluids/calc_orifice_flowmeter.cfm
I...
The pictured hoses has helical rib, and I don't know of non-helical types of flexible hoses for a long time. I believe the formulaes developed already incorporate the helical nature. S is the distance between each rib, and in this case it is about 8,5 mm. According to Frank Yeaple this is like...
