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Characteristic scales in Thin Shear Layers Equations (Aerodynamics)

Yes, they refer to the ratio of lengths: smaller lengths in the cross stream direction. So, for example the rate of velocity change cross stream happens over a smaller length than a comparable velocit …
Solar Mike's user avatar
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What does negative shear stress mean $\tau \:=\:\frac{VQ}{It\:}$?

Just the direction you are measuring ie above the line is positive, below is negative. If you put line A at the bottom of the item then all values would be positive.
Solar Mike's user avatar
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Metric bolt shear strength for a layman

I would go with M6 or M8 and use several. A variety of values are possible for each size as there are grades of bolts. The material that the rivnut is fitted into may be the limiting factor - body pan …
Solar Mike's user avatar
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Effect of multiple shear pins used in combination in a coupling

This is known as double shear. …
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Why does the fulcrum pin of a band brake experience "double" shear stress

From the image you should see that the pin on the left has two "lines" of shear stress while the one on the right only one, bending is of course an issue. …
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Difference in shear stress - one bolt vs two

Are the holes / bolts a machined fit? If not then one is most likely taking more stress than the other. However, when engineers do this type of analysis they take the load and divide it equally betw …
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How to fix sheared flats on a pulley?

One other possibility is to mount the motor / pulley in a drill stand and drill a "keyway" axially between the shaft and pulley then put a pin in that hole - 2mm dia but 10mm long which would work wel …
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