Recent content by davidgruty

or just sum of forces in the vertical direction: T1 + T2 = P

ok! So sum of moments respect to the center and I already have it. Like this:

ahá, I see now well the equation. So I have the relation between T1 and T2. Now I need to plug it in the equilibrium equations, but I don't see them yet. How does the friction force affect the cylinder??

I'm not following. What do you mean with T1 in terms of T2? their relation? Such T2 = N + T1 ? This is one equation on the rope Then we have the N = T2 * e^(mu*theta) And finally the moments around the center: P * a + T2 * R = T1 * R + N (xxxx) I don't know how N contributes in the...

Yes, the rope should not slip. I want to find the distance "a" maximum before starts slipping. Using the static friction coefficient

What is theta? the angle of contact between rope and cylinder? 180º in this case (Pi) So N = T2 * e^(mu*PI) ? There are 4 forces: the two tensions (T1, T2), the friction (N) and the weight (P) How can I connect them? I can't say that the sum of forces in the vertical axis is zero. N is...

ok, right. I just realized the the tension in both sides of the rope is not the same

Hi, We have a cylinder held by a rope . The rope holds it around its lower half. If the center of mass of the cylinder is not in the middle, but towards a side, a distance "a". How does this offset affect to the friction on the rope? or How big does "a" have to be so the cylinder starts...

Hi there! I run into a situation where I can't go on. It's about a thermal analysis, I already made a simulation using Ansys but I also want an approach made "by hand". In order to simplify the case I made this example: We have a metallic bar inside the soil. The bar is at 100ºC and the...

My answer seems rude, my exclamation mark is irony! ;) (now, with smiles better)

Of course not! My question is how to spread the points over the crown area, not a circumference.

I have to correct my post; It is not a complete circle, it's an Annulus (circular crown). Thanks

Hello all! I am designing a plate to hold some crystals, bla, bla... The point is that this mounting plate is held by other plate by let's say "interface" pieces. I made some calculations and I need 24 pieces (6 by quadrant) to be on the safe side. I do not know how share them over...

I was thinking this night (i take the work home) i can live with the heat flow but the problem is how to calculate de global K of the wall. i have the K of the material but there is still missing what happens in the faces of the wall

Ok, I understand about the balance of temperatures. (the in part is going to get warmer) Let's say we have a cooling machine inside which keeps the -25ºc. The question is how does the thickness of the wall affects to difference of temperatures. I need to know the global "k" (coefficient...