# Homework Help: Finding the shear stress and angle of twist in hollow shaft

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1. Mar 4, 2015

### shannonxtreme

MODERATOR NOTE: THIS THREAD WAS ORIGINALLY IN ANOTHER FORUM, SO THERE IS NO TEMPLATE.

I have a hollow shaft made of a titanium alloy, Shear Modulus "G". The shaft has a wall thickness of 3.2mm and an inner diameter of 20mm. The shaft looks as show in the attached image. A torque T of 232 Nmm is applied to the tube. How do I :
a) Find out the shear stress in both sections of the tube
b) Find the angle of twist of the entire component?

Last edited by a moderator: Mar 4, 2015
2. Mar 4, 2015

### SteamKing

Staff Emeritus
The attached image says the shaft is made from steel.

You want to find the shear stress and angle of twist for a similar shaft made on unknown titanium alloy with no specified material properties.

Exactly how do you expect to make this calculation without more information?

3. Mar 4, 2015

### Staff: Mentor

For this problem, what is the equation for the shear strain on a plane of constant z in the θ direction?

Chet

4. Mar 4, 2015

### shannonxtreme

No, the image is for Part 1, Part 2 shown under it is unrelated. The Part 1 question simply states titanium, and expects me to find out what the properties are.