Axle DesignIs there a common Method for this?

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In summary, the conversation discusses the analysis of reaction forces induced by a loading on an axle. The speaker is having trouble with their sum of moments equation and is considering using a different point to sum the moments. They also question whether there is a convention for how the loading will be distributed to the reaction forces on the diagram. The other speaker explains that the moment applied by each strut depends on the difference between two forces, and that this is a case of static indeterminacy. They suggest modeling the struts as part of the structure to determine the moment they apply to the axle, which depends on their bending stiffness.
  • #1
Saladsamurai
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Okay, so I am trying to analyze the reaction forces that are induced by a loading on this axle.
I am running into a problem because my sum of moments equation is not independent of my force summation.

That was due to a poor choice of a point to sum the moments about :blushing: So I could do it again about another point, but before I do I was wondering. Is there already a common convention on how the loading will be distributed to the reaction forces on the "strut" in the diagram Fo and Fi?

Thanks?

Picture1-37.png
 
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  • #2
Apparently this is statically indeterminate if I break the strut reaction into an inner and outer reaction.

I suppose I will just treat it as one (that is probably sufficient).
 
  • #3
The moment applied to the axle by each strut depends on the difference between Fo and Fi. This is an interesting case where any moment can be applied by the strut (infinite solutions), and it is undetectable in a summation of external moment, because the moments applied by the struts cancel out, due to symmetry, in a summation of external moment. Therefore, you would need to model the struts as part of the structure (statically indeterminate) to determine the moment they apply to the axle, which depends on the strut bending stiffness. If the struts apply zero moment to the axle (meaning they have zero bending stiffness), then that means Fi = Fo, or it could mean Fi = 0.
 

Related to Axle DesignIs there a common Method for this?

1. What is the purpose of an axle in a vehicle?

An axle is a central shaft that connects and rotates the wheels in a vehicle. It is responsible for supporting the weight of the vehicle and transmitting power from the engine to the wheels.

2. How is the size of an axle determined?

The size of an axle is determined by several factors, including the weight and load capacity of the vehicle, the intended use of the vehicle, and the type of suspension system used. Engineers use mathematical calculations and simulations to determine the appropriate size for an axle.

3. What materials are commonly used in axle design?

The most commonly used materials in axle design are steel and aluminum. These materials have high strength and durability, making them suitable for supporting heavy loads and enduring the stress and strain of constant rotation.

4. Is there a standard method for designing axles?

There is no one standard method for designing axles, as the design process can vary depending on the specific requirements of the vehicle. However, engineers typically follow a systematic approach that includes analyzing the vehicle's weight and load, determining the necessary size and materials for the axle, and conducting simulations and tests to ensure its strength and performance.

5. How do engineers ensure the safety and reliability of axle designs?

Engineers use a combination of mathematical calculations, computer simulations, and physical testing to ensure the safety and reliability of axle designs. They also adhere to industry standards and regulations to ensure that the axles meet the necessary safety and performance requirements.

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