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Engineering : Recent Questions and Answers (Page 10)

Find answers to your questions about Engineering or help others by answering their Engineering questions.

How to create a mechanical equivalent to dropping object onto steel floor

(I was informed on the Physics board that this is an Engineering question, therefore they closed it there, and I moved it here) First, I have next to zero formal...

Asked on 08/31/2021 by RTC

1 answer

Geometric constraints on Planetary Gears

I would like to design a single stage planetary gearbox using standard gears. There appears to be three primary conditions to ensure the geometry of the gears will fit -...

Asked on 08/31/2021 by Brian L.

1 answer

Abaqus vcct fatigue consistently underpredicts disbond growth rate

I'm modelling a fatigue disbond using abaqus. I've understood the disbond growth rate is equal to: $$dfrac{partial a}{partial N} = c_3 Delta G^{c_4}$$ I've set up...

Asked on 08/31/2021

0 answer

Starter direction for methanol engine

I am having a small 2.5cc methanol 2-stroke engine that I am building an electric starter mechanism for. From my research I was under the impression that for a 2-stroke...

Asked on 08/31/2021

1 answer

Glass/Tile drill bits

I meant to get a countersink for wood. Then in the hardware store, beside the countersinks, I saw a glass/tile drill bit set, which as a pack, is not so...

Asked on 08/30/2021

1 answer

Serrated locking part

I need to fixate something at adjustable approximate angles. It doesn't need to have a lot of holding power. So the idea is to have washers/nuts that are serrated, that...

Asked on 08/30/2021 by Dehbop

1 answer

Is it safe to use a 125PSI rated auxiliary air tank with a 150PSI air compressor?

I have a small, 5 gallon, pancake compressor which has a maximum 150PSI rating. Unfortunately, it doesn't have the air capacity to power the demands of an HVLP paint sprayer...

Asked on 08/29/2021

3 answer

Do drawing dimensions have to start from datum?

When specifying the depth of a cut, should the dimension start from the datum surface or from the surface where the cut will be made? In the example below, a...

Asked on 08/28/2021

1 answer

Torque based bending on shaft

I wanted to see if the force acting at A (30 kN) would create a deflection from OB other than twist. In other...

Asked on 08/25/2021

2 answer

Penetration rate for miniature cone

Is there any recommended/suggested/required penetration rate for a miniature cone penetrometer? A 20mm/s is for a standard size of cone penetrometer, what about for miniature one?...

Asked on 08/20/2021 by shemelyn

1 answer

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