The newton meter (Nm), occasionally employed as a measure of work or energy, is equivalent to the joule, the standard international power unit in this context....

How to convert 500 ft-lbs to Nm?]]>

The problem is the following: (I enclose the hydraulic diagram, sorry I know it is not accurate, I did it again on the fly on the PC by copying it from the workbook, unfortunately it is not to scale but it should still be useful to understand the exercise)....

Advanced Hydrodynamic Problem - University level -> Calculations]]>

draw depth 140mm

245mm OD

straight walled

properly ventilated

STUCK!]]>

I've been thinking about the solution for cleaning a water-cooled gas cooler and would love to hear some advice from the smarter people with more experience.

Gas Cooler is used to decrease exhaust gas temperature. The exhaust gas temeprature is usually between 450-700 deg C, so You get relatively clean exhaust gas. Water/glycol mixture is used as a coolant.

After some time the exhaust gas builds up a deposit layer...

Cleaning of the finned tubes on gas cooler without disassembling]]>

I am designing a housing for a pressure sensor and I am a bit confused.

Some places on the internet O-ring squeeze ratio is expressed as the amount of o-ring squeeze divided by the o-ring cross section.

Other places it is expressed as the amount of squeeze divided by groove depth.

These two methods of calculation give very different answers.

My O-ring is 1.778mm thick and the groove is 1.325mm deep.

The first method gives a squeeze ratio of 25.5%, the other 34%.

Which of these is...

How to calculate O-ring squeeze ratio?]]>

I need to calculate the diameter of a rod (rounded).

the rod holds a wheel and is held from one end (just like trailer wheel)

so I am trying to understand how to calculate it?

should I refer to this calculation for both shear stress and bending moment?

Material: 316

Length: 100mm

Thank you all

Noam.]]>

I have a 1 metre length of 9mm stainless steel 201 bar. I'm looking for help in approximating how much force/weight would be needed to bend it, 10cm from one end.

I know this is appallingly basic. Any online calculators or equations I could get a general idea (5kg, 10kg, 40kg).

thanks / simon]]>

And not like this:

View attachment 1599]]>

I was wondering how to calculate the effective stress when multiple stress factors are implicated. For example, I know the bottom of a thread acts as a stress concentration, but what if there is a small crack at the bottom of the thread? The crack also acts as a stress concentration, but how do you calculate the total stress in that case? Do you multiply the applied stress by both stress concentration factors or is there like a correction factor that comes in?

These are random...

Question about stress concentration]]>

What do you call people who calculate the output of mechanical system? They use simulation programs like matlab and mathematics. I am not looking for people who design or develop but calculate the output of system.

Thank you

Kingofjong]]>

I have recently been tasked to find the stress, strains as well as safety factors for a human sitting on a folding stool. While I have prior knowledge of stress and strain calculations, I am quite clueless on how I should go about starting my calculations for this particular item. I have attached an image of the chair below.

It can be assumed that the chair is just a cuboid, and that the faces at the side is a full rectangle unlike the one shown below where there are some...

Static analysis for folding chair]]>

I am about to purchase a large grandfather clock my ceiling height is 96in the clock measurements are height 91in width 23in and depth 14in, the clock will be carried in horizontally and than stood up, my question is will the clock clear my ceiling when stood up from a horizontal position, also what would be the max dimensions of the clock to clear an 8ft ceiling.

Thank you very...

Diaginoal caculation I think?]]>

Now I'm design a spline coupling and I conpare between 2 calculation software: KissSoft & MITcalc

I found an abnormal result. This is permissible pressure value of material.

I select same material, same hardness, there's a different as below. anybody can explain why permissible pressure different so much? please.

and how to calculate permissible pressure from tensile strength?

View attachment 1328]]>

View attachment 1326

According to “Mechanical Metallurgy” by George E. Dieter, a better approximation of the crack growth rate that does account for the stress ratio is:

View attachment 1327

α is a geometric factor that depends on the crack...

Fatigue crack growth rate]]>

I'm quite embarrassed and feeling rather sorry for myself having to ask for help to figure this out.

I had a few semesters of structural engineering at university (15 years ago), but have not touched an equation since and feel like a complete idiot now as I can't even remember how to solve for X in the simplest of equations.

Anyway, the problem I am trying to figure out goes as follows:

I am making a sliding hatch rail for my small sailboat and am trying to figure out how deep...

Calculating failure load (Please help)]]>

So, I would like to know about inverted pendulum motion equations.

Please explain me these equations.

]]>

I got a problem when calculate bolt tightening torque for clamp pulley (belt transmission of motorcycle) as bellow picture:

Please explain to me how to calculate: how much bolt axial tension (clamp force) for 01 bolt is enough?

Material:

- Pulley: S45C

- Bolt: S45C

- Hub mounting(Thread tap hole): Aluminium (A356)

Thanks you very very much!

View attachment 1075]]>

I am trying to dispense some food from the container using a rack and a pinion, but was not successful in that, as the stepper motor I use doesnt give enough torque. So I need to know the torque I am supposed to generate to dispense the food. But I am not sure how to measure the force required to dispense the food. Please help me out in...

Calculating the force required]]>

I have some problem in calculate nut strength endurance.

It's very easy to calculate standard nut because there're so many article and handbook analysis this (as below)

View attachment 1077

For example in Nut M6 (metric) with 6 thread, You can see, stress concentrate at first engaged root is 33.7%. However, now I have to calculate for tapped thread hole with non-standard thread length (number of thread is 14), so, how many percent of load at first root?...

Calculation: Stress generated at the roots of nut thread]]>