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4 votes

Why do two simply supported beams stacked on top of each other deflect more than a single beam of twice the thickness?

Why do two simply supported beams stacked on top of each other deflect more than a single beam of twice the thickness? Because the mating surfaces slide. The result is that you don't have the same ...
Transistor's user avatar
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3 votes

How to find out the strain distribution of a block in a simple compression test?

Strain is displacement normalized by the original distance, so yes, the same displacement applied uniformly to the same original dimension will produce the same strain for that axis for any material. ...
Chemomechanics's user avatar
2 votes
Accepted

Trying to detach a detachable handle on a meat grinder

Because the joint created by the handle and the auger bit is solid metal, the threading is, as you've noted, held in place by the rotation. It is common that a sharp blow on the handle in the correct ...
fred_dot_u's user avatar
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1 vote
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Twisting of thick ring due to internal pressure

Solution using ring Using figure from the question: Ring rotation stiffness Section $\Gamma$ rotates by angle $\varphi$ around point $S$ located at height $s$ from the bottom. Axial coordinate $z$ ...
Tomáš Létal's user avatar
1 vote
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Does gold have elastic behavior?

Gold has a Young's modulus of 79 GPa which is very similar to silver, but significantly lower than iron or steel. https://www.totalmateria.com/page.aspx?ID=CheckArticle&site=ktn&LN=NO&NM=...
r13's user avatar
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1 vote

Why do two simply supported beams stacked on top of each other deflect more than a single beam of twice the thickness?

If you look at the stress distribution in a bending beam it is zero at the neutral axis, and increases linearly as you approach the surface. M / I = σ/y = E / R is the important equation, if you ...
Greg Locock's user avatar
1 vote
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Optimal shape for cantilever beam subject to body weight only

Red is beam depth blue is stress. That's a numerical solution that's why it goes silly at the tip
Greg Locock's user avatar
1 vote

Optimal shape for cantilever beam subject to body weight only

You are overthinking. Since the only variable is "h" (b & L = constant), so $w = \rho*b*h$ $M_\max = \dfrac{w*L^2}{2} = \dfrac{\rho*b*h*L^2}{2}$ $I = \dfrac{b*h^3}{12}$ Given, $\sigma= \...
r13's user avatar
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1 vote
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Thin wall pressure vessels: local stresses in bends

Junction between cylindrical and conical shell Simple conservative solution You can use longitudinal membrane forces and put them into equilibrium in vertical direction. Cylindrical shell has the ...
Tomáš Létal's user avatar

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