Determine Wall Thickness for 1,000 in. Aluminum Tube to Support 10-kip Load

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Homework Help Overview

The discussion revolves around determining the wall thickness of a large aluminum tube intended to support a specified load while adhering to stress limits. The subject area includes mechanics of materials and stress analysis.

Discussion Character

  • Conceptual clarification, Mathematical reasoning, Assumption checking

Approaches and Questions Raised

  • Participants explore the relationship between load, stress, and area, with some questioning the original poster's approach to calculating stress. There is a discussion about the distinction between normal stress and shearing stress.

Discussion Status

The discussion is ongoing, with participants providing guidance on the correct interpretation of stress calculations and questioning assumptions made in the initial approach. There appears to be a productive exchange of ideas regarding the correct formulas to use.

Contextual Notes

Participants note the importance of correctly identifying the type of stress involved and the appropriate relationships between load, area, and stress. There may be confusion regarding the definitions and calculations being applied.

thall88
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An aluminum tube with an outside diameter of 1,000 in. will be used to support a 10-kip load. If the axial stress in the member must be limited to 30 ksi T or C, determine the wall thickness required for the tube. I used tau=shearing stress/area therefore 30(pie times 1-d)=10 but that is not correct Thanks
 
Last edited:
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https://www.physicsforums.com/showthread.php?t=94379
 
I believe the question refers to normal stress \sigma
 
Also remember that stress divided by area is not what you want. You want LOAD divided by area to get stress.
 

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