Measuring Young's Modulus: Clamped vs Freely Supported Ends

[adiputra]

I have a project to measure young modulus by measuring the deflection of a beam under point mass. I have derived the equation but i am confused to how the end of beam should be placed to obtained best precision. Should it be both clamped end, freely supported end or a mixture of both?

My idea so far is that for both freely supported ends, its disadvantage is the reference point of x=0 might be displaced during deflecton. However, i can't think of the both clamped scenario disadvantages

 

[archis]

By clamped and do mean fixed end? By such test useally the and is free (support doesn't take any banding moments). Teoretecly u can support your beam as you want. You will have differnet stresses and different deflections.

 

[oswaler]

.

As a scientist, it is important to consider the experimental setup and conditions in order to obtain accurate and precise measurements of Young's modulus. In this case, the placement of the ends of the beam is a crucial factor that should be carefully considered.

Both clamped ends and freely supported ends have their own advantages and disadvantages in this experiment. For example, using both clamped ends may provide more stability and reduce the potential displacement of the reference point during deflection. However, this setup may also introduce additional stress on the beam, affecting the accuracy of the measurements.

On the other hand, using freely supported ends may reduce the stress on the beam, but it may also lead to potential displacement of the reference point during deflection. This can affect the precision of the measurements.

In order to obtain the best precision, it may be beneficial to use a mixture of both clamped and freely supported ends. This can help to balance out the advantages and disadvantages of each setup.

Furthermore, it is important to carefully control and monitor the experimental conditions, such as the applied force and the position of the point mass, in order to minimize any potential errors and ensure accurate results.

In conclusion, the choice between using clamped or freely supported ends for measuring Young's modulus should be based on careful consideration of the experimental setup and conditions. A mixture of both setups may provide the best precision, but it is important to carefully control all variables in order to obtain accurate and reliable results.