Beam deflection in a cantilever beam

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SUMMARY

The discussion focuses on calculating the deflection of a 25ft cantilever beam subjected to an evenly distributed load of 3000 lbs/ft, along with concentrated loads of 4000 lbs at 8ft and 5000 lbs at 18ft from the clamped end. To determine the total deflection, the beam must be analyzed in three segments: one for the distributed load, one for the concentrated load at 8ft, and one for the concentrated load at 18ft. The deflection profiles for each segment can be sourced from mechanics of materials textbooks, specifically using equations from Roark's formulas for stress and strain.

PREREQUISITES
  • Understanding of cantilever beam mechanics
  • Familiarity with distributed and concentrated loads
  • Knowledge of deflection equations from mechanics of materials
  • Ability to interpret Roark's formulas for stress and strain
NEXT STEPS
  • Study the equations for cantilever beam deflection under distributed loads
  • Learn how to calculate deflection for concentrated loads using Roark's formulas
  • Explore the concept of superposition in structural analysis
  • Review mechanics of materials textbooks for detailed examples and equations
USEFUL FOR

Structural engineers, civil engineering students, and anyone involved in analyzing cantilever beams and their deflection under various loading conditions.

anthonym44
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I need help finding the equation for a 25ft cantilever beam deflection where the beam has an even distributed load of 3000 lbs/ft and also has concentrated loads of 4000lbs 8ft from the clamped end and 5000lbs 18ft from the clamped end. A generic equation from a Roark table would do, but I am having trouble finding one. Any help is appreciated. thanks in advance.
 
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What you are going to need to do is split the beam up into three different problems:

1) Cantilever beam with distributed load
2) Cantilever beam with concentrated load at 8 ft
3) Cantilever beam with concentrated load at 25 ft

Find the deflection profile for each of these cases and then add them all together. The deflection profile can be found in the back of any mechanics of materials book.

Hope this helps,

jrw
 
yes, that helps me a lot. Thank you very much.
 
no problem
 

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