Questions tagged [elastic-modulus]

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Tau max value in torsion calculation [duplicate]

I am going to try and ask this question again. In this formula to calculate shear stress in a solid shaft: τ = T r / J If I want to solve for the radius; I should use the modulus of rigidity ...
8
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8answers
5k views

Can I weaken a coil spring consisting of spring steel?

I have a steel coil spring that is used by compression. It is too strong, and I would like to reduce its strength by some fraction, ideally keeping its length. Reducing it to roughly half would be ...
3
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0answers
99 views

Shape memory alloy fibers with low Young's Modulus?

I am wondering if there exist any species of shape memory alloy fibers with low Young's Modulus at room temperature, for an application I'm working on. So far I've played with Flexinol, but it is a ...
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2answers
69 views

Youngs modulus in ASTM specification A36

In ASTM A36 I cannot find a single mention of the Youngs modulus of the material. It does mention the tensile strength and yield point among other things. Where is such information normally indicated ...
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2answers
11k views

How to calculate the diameter of a transmission shaft from RPM & Torque

If I know the torque and rpm that the shaft need to operate at, can I calculate the diameter of the shaft? A motor operating at 60 rpm applying 1,000 Nm of force on a shaft that has a modulus of ...
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2answers
282 views

Thick walled cylinder theory - Stress/strain in ballooned out tube

I want to work out how much I can expand a piece of rubber tubing before it ruptures. The wall is 0.75mm and the ID 5mm. Hence I am working out the stress/strain from thick-walled cylinder theory ...