Deflection in a Cantilever beam

In summary, a cantilever beam can be deflected by modifying its structure, by providing a stiffer or more rigid support, or by using a cable stay.
  • #1
choudhari.mayu
6
0
Hello,

i was looking for ways i can reduce the deflection in the cantilever beam whose one end is fixed and load is applied at the free end.

Few i thought of was,
1- Reducing the length of the beam
2- Increasing the modulus of elasticity of the beam
3- ??
4- ??
5......

Appreciate your help

Thanks
 
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  • #2
One of few formulas you should memorize is the deflection at the free end of a cantilever with a point load applied at the free end. Write it down and see what variables you can change besides length and elasticity yo reduce the deflection.
 
  • #3
Increasing the second moment of area of the beam, providing extra supports etc.

I'm trying to reduce the reflection of a cantilever beam as well, but there isn't much you can do. Best bet is to reduce the length but in most cases it isn't possible.
 
  • #4
choudhari.mayu said:
Hello,

i was looking for ways i can reduce the deflection in the cantilever beam whose one end is fixed and load is applied at the free end.

Few i thought of was,
1- Reducing the length of the beam
2- Increasing the modulus of elasticity of the beam
3- ??
4- ??
5......

Appreciate your help

Thanks

Can you use a supporting cable to help?

http://media.cheggcdn.com/media/339/339bef0e-5707-4c7e-b0d1-eb9d4b8afef9/phpB1vxDf.png
phpB1vxDf.png
 
  • #5
Optimised variable section .
Rigid stay .
Haunch .

Cable stay shown is not set at a very effective angle to reduce deflection .
Cable stays with no provision for setting tension are in any case not a reliable means of reducing cantilever beam deflection .

Edit : Old thread - op has gone .
 
Last edited:
  • #6
The deflection can be made approximately zero by creation/modification of the structure in that way.
Then the arrangement of members will form a structure which deflects the point to some other direction or make it zero approx...
 

FAQ: Deflection in a Cantilever beam

What is deflection in a cantilever beam?

Deflection in a cantilever beam refers to the amount of bending or deformation that occurs in the beam when a load is applied to it. It is a measure of the beam's flexibility and is typically measured in units of length, such as inches or millimeters.

How is deflection calculated in a cantilever beam?

The deflection of a cantilever beam can be calculated using the beam deflection formula, which takes into account the beam's length, material properties, and the applied load. This formula is typically derived from the Euler-Bernoulli beam theory and can be solved using various mathematical methods, such as integration or the use of tables and charts.

What factors affect the deflection of a cantilever beam?

The deflection of a cantilever beam is affected by several factors, including the beam's length, material properties, cross-sectional shape, and the magnitude and location of the applied load. Other factors, such as temperature changes and material imperfections, can also impact the beam's deflection.

How does deflection impact the strength of a cantilever beam?

Deflection can significantly affect the strength of a cantilever beam. As the beam deflects under an applied load, the internal stress and strain within the beam increase. If the deflection exceeds the beam's elastic limit, it can lead to permanent deformation or failure. Therefore, minimizing deflection is crucial in maintaining the structural integrity and strength of a cantilever beam.

Can deflection be reduced in a cantilever beam?

Yes, there are several ways to reduce deflection in a cantilever beam. One method is to increase the beam's stiffness by using a stronger or thicker material or changing the beam's cross-sectional shape. Another approach is to decrease the applied load or distribute it more evenly along the beam's length. Additionally, adding supports or reinforcements can also help reduce deflection in a cantilever beam.

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