Recent content by pityocamptes

No one? Thats odd. I guess than, I will just have to experiment with different orifice sizes to get the best result, was trying to avoid this and wanted to see if a mathematical solution existed for this problem.

Anyone? Bump...

I have a small pump system for an aquarium, and have decided to build a small manifold. The total volume of the manifold and the tubing is 2.9828 cu inches. Here is my pump specs: Inflation time < 8s (from 0-200 mmHg in a 100cc tank) Air flow > 70mL/min Max pressure > 360mmHg Leakage max...

Thanks! I'll probably just order the material and experiment a little.

I was hoping someone could help me with a project I am doing. I have contacted a manufacturing company thatmakes thermal wrap material, and I need to see if this will work for my project. According to the manufacturer the material is 1/16" thick - this info was also given to me by the...

If I have a beam supported by two springs at either end and each spring is rated for 500 lbs, does that mean the max load that can be applied to beam (assuming the beam can hold it) is 500 lbs before the springs compress all the way? Or does the distibuted load across the beam diminish the load...

Thanks! Thats what I thought (moment problem). After I typed it out I started wondering if I was overthinking it Thanks again, I appreciate the help.

Bump - to see if anyone might have had a chance to review? :smile:

I have another question maybe someone can help me with. I have attached a drawing of a beam (tube) that is 42" long and weighs 50 lbs. The beam pivots at one end (red dot). If the beam weighs 50 lbs how much force is required to lift the beam to a vertical position if I apply force at a 45...

OK, here is what I have: 2 x 2 x .120 square tubing -> M = maximum bending moment = 9091 in-lb. M = .55 (safety factor) * 30,000 (psi) * .551 (section mod) = 9091 in-lb y = distance from the neutral axis of the cross section to outer edge of beam = 1 inch I = moment of inertia...

OK. Thanks, that makes sense to me. Will calculate moment of inertia and post back for some more suggestions. Thanks again.

Thanks Fred. So basically the beam will support a higher poundage if the load is distributed, and the numbers I came up with are a worse case scenario, as you mentioned, for a max point load? Since I'm new at the structural physics "thing" maybe you can shed some light on what the Moment of...

Thanks FredG! I was able to figure out the section modulus and max bend moment with the steel tubing I would like to use. Here are some problems maybe you or someone else can help me with. My trailer is 36" X 48". I would like to use 2x2x1/8 steel tube (mild steel with a yield of 36,000...

Hi, all. New here. Currently I'm a computer science student so I have some background in physics. I do not know very much about mechanical/structural physics or the equations associated with them. Currently, I am trying to build a small utility trailer and have questions about the steel tubing...