Structural Mechanics: Solving Shear Force on a Cut Beam

[hsohl]

hi there

any 1 know how to work out shear force ona cut beam ? i got the str3 web page problems!

 

[FredGarvin]

I would answer you if I could understand what the heck you just asked. Post in a legible format and you will be helped.

 

[synnott84]

Hi

Does anyone know how i go about answering the following question:

A timber beam with a span of 4 m is carrying an inclusive UDL of 40 kN. The safe allowable bending stress is 6 N / mm2. Choose a suitable section for the beam.

Thanks

 

[Mech_Engineer]

It's obvious this is a homework question, and you woke up a 4 year old thread to ask it.

Make a new thread in the homework section, follow the posting rules, and people will be happy to help.

 

[alphy]

Hello there,

As a structural mechanics scientist, I can help you with solving shear force on a cut beam. Firstly, it is important to understand that shear force is the internal force that acts perpendicular to the longitudinal axis of a beam. To calculate the shear force on a cut beam, you will need to use the principles of equilibrium and free body diagrams.

1. Draw a free body diagram of the cut beam, showing all the external forces acting on it (such as point loads, distributed loads, and reactions).

2. Apply the principle of equilibrium, which states that the sum of all forces acting on a body must be equal to zero. This will help you determine the unknown shear force.

3. Next, use the shear force equation: V = dM/dx, where V is the shear force, M is the bending moment, and x is the distance from the support to the cut section.

4. To determine the bending moment, you can either use the moment equilibrium equation or integrate the shear force equation.

I suggest referring to your textbook or online resources for further guidance on solving specific problems. Additionally, there are also software programs available that can help you with shear force calculations.

I hope this helps you with your structural mechanics problem. Best of luck!