Recent content by kieren12345

Hi all, I am trying to ensure that some supporting welds for a structure will meet the impact requirement of 1.3kJ. I have the following information for the weld deposit: UTS: 759 MPa 0.2% Proof: 598MPa 18.6% El 69.9% RofA Is there any formulas that I can use to create a fairly...

Any ideas?

Thanks, I have tried using the formula and found it is closer without the 0.20... I have attached a spreadsheet, to check the costing and it is approximatley 1% out across a range of examples. Please see attached

but 13.9148 * 3.9% +0.20 = 0.7424 0.7424-13.9148 = 13.1723 I have lost 3p out of the margin?

Thank you for your reply, but that's not what I am after. Sorry I probabily did not explain it very well. M= margin % P= Paypal Transaction Fee S = Sell Price R = Postage What I would like to do is calculate in my price the sell price to include the margin and all costs. If for...

Hi All, I have a costing problem, that seams simple but I must be missing something. We buy a product for X and we want to make a certain margin on this product, say %M. We have postage costs say P and finally we have a transaction fee that is charged at the total sell price. So this fee...

attached

Please see attached word doc. thanks to explain abit better. I have two circular plates that is bolted to an internal and external ring, so that there is a cavity inbetween. We are giong to pressurise this cavity to 10bar and see how an internal elastomer reacts. One of the end plates...

Thank you for correcting me there. the formula I have is yb=0 0b=0 ya=0 0a=0 mrb=-wa(C3L6-C6L3)/(C2C6-C3C5) Qb=w(C2L6-C5L3)/(C2C6-C3C5) mra=MrbC8+QbaC9-waL3 Qa=Qb(b/a)-(wRo/a) any help?

I have an old book on roarks formulas for stress and strain. Which seams to have the formulas I need but it doesn't have explanation of what the variables are. I am a mechanical engineer but have not studied Roarks. Does anyone know the following? b/a ro/a yb mrb ya mra Thanks

Thanks for all the help with this one guys. Yes I see your point with the wording, there are a lot of terms in engineering that can be considered something else if you have a dirty mind. Anyway, I heated the annulus and slowly tried to press the shaft in, however the shaft has buckled on...

Its a real tricky problem in my line of work. I am worried about damaging the shaft.

I have a problem at work! We have a large annulus that we need to fit a shaft into. I have calculated the tonnage required and it is outside of our workshop facilities. Any ideas, Lub, etc?

sorry missed the link to formulas http://www.engineersedge.com/calculators/machine-design/press-fit/press-fit-equations.htm

I have three different parts: 1. An Aluminum Bronze Outer Ring 2. A Neoprene Ring 3. A Phenolic Composite Ring. The (2) fits into a recess in (1), (2's) purpose is to seal between (1) & (3). What I would like to do is create a calculator on excel that will calculate the force required...