Force Required to Fit (3 different materials)

[kieren12345]

I have three different parts:
1. An Aluminum Bronze Outer Ring
2. A Neoprene Ring
3. A Phenolic Composite Ring.

The (2) fits into a recess in (1), (2's) purpose is to seal between (1) & (3).

What I would like to do is create a calculator on excel that will calculate the force required to insert (3) into (1) & (2).

I am presuming that the Formulas here won't work as I have the neoprene compressing but also being backed up by the aluminum bronze.

Any help will be greatly appreciated. I have a little maths and physics knowledge at HND level but that's my limit I am affraid.

Thanks
Kieren

 

[kieren12345]

sorry missed the link to formulas

http://www.engineersedge.com/calculators/machine-design/press-fit/press-fit-equations.htm

 

[oswaler]

Thank you for sharing your project with me. I am happy to provide some guidance on calculating the force required to fit these three different materials together.

Firstly, it is important to understand the properties of each material in order to accurately calculate the force required. Aluminum bronze is a type of bronze alloy that is known for its strength and corrosion resistance. Neoprene is a synthetic rubber material that is known for its flexibility and resistance to oils and chemicals. Phenolic composite is a type of plastic material that is known for its strength and heat resistance.

To calculate the force required for fitting these materials together, you will need to consider the following factors:

1. Material properties: As mentioned, each material has its own unique properties that will affect the force required for fitting. For example, the neoprene ring will compress more easily compared to the aluminum bronze and phenolic composite rings.

2. Contact area: The contact area between the three materials will also play a role in determining the force required. A larger contact area will require a greater force to fit the materials together.

3. Friction: The presence of friction between the materials will also impact the force required for fitting. Friction is the resistance that occurs when two materials rub against each other.

To calculate the force required, you can use the equation F=μN, where F is the force required, μ is the coefficient of friction, and N is the normal force. The normal force is the force perpendicular to the contact area between the materials.

To determine the coefficient of friction, you will need to conduct some experiments or research to find the appropriate values for each material combination. You can also use online resources or reference books to find the coefficient of friction for different materials.

Once you have all the necessary information, you can use the equation F=μN to calculate the force required for fitting the three materials together. You can then input this equation into your excel calculator to get the desired result.

I hope this helps guide you in your project. Remember to always consider the properties of each material and the factors that can affect the force required for fitting. Good luck!