Calculating Bending Moment of a Steel Tube

Thread starter fcukniles
Start date Mar 4, 2005
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Bending Bending moment Moment Steel Tube

AI Thread Summary

To calculate the bending moment of a steel tube with a diameter of 25mm, thickness of 3mm, and length of 410mm, it is essential to determine the load application and constraints first. Young's modulus is relevant for understanding the material's elasticity, but the correct formula for bending moment will depend on these factors. Creating free body diagrams will help visualize the forces and moments acting on the tube. Accurate calculations will require considering the specific loading conditions. Understanding these principles is crucial for determining when the tube will bend.

Mar 4, 2005

fcukniles

Hi,
I need to work out the bending moment of a steel tube, 25mm diameter (3mm thick) 410mm long.

im assuming i have to use youngs modulus in some way? what's the correct formula for working out when it will bend?
thanks
chris

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Mar 4, 2005

brewnog

Science Advisor

Gold Member

Well firstly you need to decide how the load is applied, and how the tube is constrained.

Then get drawing some free body diagrams.

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