How to Optimize a Multi-Diameter Shaft with Varied Components in MATLAB?

In summary, the conversation discusses designing a shaft with 2 bearings and 2 gears of various diameters. The speaker mentions using a program like MATLAB for optimization and asks for recommendations on approaching the problem. They also mention the gears and bearings being fixed and ask for the number of remaining free parameters.
  • #1
JoeS4
7
0
How would you go about designing a shaft with 2 bearings, 2 gears, and the shaft has various diameters (d1, d2, d3)?
You know how much power needs to be transferred from one gear to another, the distance between both of the gears, the minimum allowed distance between gear and bearing centers, the material of the shaft, rotational velocity of input gear, the maximum length of the shaft, there will be 2 shoulders, input gear is somewhere along the second diameter, output gear is somewhere on the third diameter, bearings are somewhere on the first and third diameters.

I'd like to use a program like MATLAB for optimization to graphically identify changes as unknown values fluctuate. With so many unknown variables, how would you recommend approaching this?
 
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  • #2
If the gears have been designed and it is only the shaft that you wish to optimise then you probably know where the gears and bearings must be on the shaft. Do you know what type of bearings they will be? Are the gears straight cut or helical? Left or Right handed? Driven or driving?

Draw a diagram showing your hypothetical shaft. Parameterise the diagram.
Now, there are a number of parameters that are fixed.
How many parameters remain free?
 

1. What factors should be considered when optimizing shaft design?

When optimizing shaft design, some important factors to consider include the material properties of the shaft, the loading conditions and forces it will experience, the desired performance and function of the shaft, and any environmental or safety requirements.

2. How can I determine the appropriate diameter for a shaft?

The appropriate diameter for a shaft can be determined by considering the load it will experience and using engineering calculations such as bending and torsion equations. Additionally, considering the material properties and desired performance can also help determine the appropriate diameter.

3. What are some common methods for optimizing shaft design?

Some common methods for optimizing shaft design include using finite element analysis (FEA) software to simulate and analyze different designs, conducting physical testing and prototyping, and consulting with experienced engineers and experts in the field.

4. How can I ensure the strength and durability of a shaft?

To ensure the strength and durability of a shaft, it is important to choose a material with appropriate properties, properly size and design the shaft for the intended load and function, and conduct testing and analysis to verify its performance. Regular maintenance and inspection can also help maintain the strength and durability of a shaft over time.

5. Are there any special considerations for optimizing shafts in specific industries or applications?

Yes, there may be special considerations for optimizing shafts in specific industries or applications. For example, shafts used in the aerospace industry may have stricter weight and performance requirements, while those used in the automotive industry may have to withstand high temperatures and corrosive environments. It is important to consider these unique factors when optimizing shaft design for a specific industry or application.

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