Jump to content
Mechanical Engineering Community
  • 0
Márton Rezsőfi

How would you scale this?


1 answer to this question

Recommended Posts

  • 0

For a very simple analysis, 

You need to maintain working stress if you using the same shaft material.

Stress = applied moment x shaft radius / shaft inertia

Applied load (moment, M) are in scale with R^3. (cube of blade radius, could be approximated by the ice cream space)

shaft radius, r define the dimension.

shaft inertia, I defined as pi x r^3 x t for thin hollow cylinder shaft.

t = thickness.

Let's say initially for a 1 m x 1 m x 1 m, you use 100 mm diameter shaft with thickness 5 mm. 

If you want to make the ice cream space larger to 2 m x 2 m x 2 m, i.e. 8 times the volume, you need 283 mm diameter shaft, with thickness 5 mm.

You need to consider further whether 5 mm thickness suitable for larger shaft (consider buckling analysis)


Share this post

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Answer this question...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...