AnsweredAssumed Answered

Structural Member to sheetmetal

Question asked by sandeep pawar on Nov 21, 2008
Latest reply on Nov 26, 2008 by sandeep pawar

Like • Show 0 Likes0
Comment • 6

Hi,

I want to replace a structural member, say an MC Channel, with a formed sheetmetal. If the material properties & the section modulus of two pieces are equal, can I safely say that the I can replace the MC channel with sheetmetal?

Do I need to compare any other properties other than material and section modulus?

Any advice will be appreciated.
Thanks,
Sandeep

Vince Adams Nov 26, 2008 12:45 PM

Correct Answer

Hi Sandeep, the best answer to this question is... "It depends."

If your C Channel is loaded prefectly parallel to the 'legs' only, matching the section modulus should be sufficient. However, for any other loading, (torsion or side loading), you should run the two sections thru Simulation to verify the response.

To Bill's point, running a Buckling study using both designs and the anticipated loading, you should see a similar buckling load factor (the primary output from a buckling study). Hopefully they are both greater than 2 or 3.

Good luck!

Vince

See the reply in context

No one else had this question

Outcomes

Bill McEachern Nov 21, 2008 4:53 PM

I would suggest that you need to ensure it has adequate buckling margin.

Actions

sandeep pawar @ Bill McEachern on Nov 21, 2008 4:56 PM

Thanks for your reply.
Buckling margin? Could you please elaborate on that, if possible?

Thanks,
Sandeep

Actions

sandeep pawar @ sandeep pawar on Nov 24, 2008 8:33 PM

HELP !!!!

Actions

Garrett Brooks Nov 26, 2008 12:13 PM

I am not an engineer, but I would think you would need a piece of sheet metal almost as thick or as thick as the flange area on the MC-channel to get the same structural properties in the direction the channel would normally see a force. Then the web area would be much thicker than on the MC-channel making it heavier over all.

just my 2 cents

Actions

Vince Adams @ Garrett Brooks on Nov 26, 2008 12:45 PM

Actions

sandeep pawar @ Vince Adams on Nov 26, 2008 12:55 PM

Thanks Bill, Garrett and Vince. Looking at your answers, I think I was going in right direction.

Thanks a ton.

~Sandeep

Actions

6 Replies

Bill McEachern Nov 21, 2008 4:53 PM
Mark Correct
Correct Answer
I would suggest that you need to ensure it has adequate buckling margin.
Like • Show 0 Likes0
Actions
- sandeep pawar @ Bill McEachern on Nov 21, 2008 4:56 PM
  Mark Correct
  Correct Answer
  Thanks for your reply.
  Buckling margin? Could you please elaborate on that, if possible?
  
  Thanks,
  Sandeep
  Like • Show 0 Likes0
  Actions
  - sandeep pawar @ sandeep pawar on Nov 24, 2008 8:33 PM
    Mark Correct
    Correct Answer
    HELP !!!!
    Like • Show 0 Likes0
    Actions
Garrett Brooks Nov 26, 2008 12:13 PM
Mark Correct
Correct Answer
I am not an engineer, but I would think you would need a piece of sheet metal almost as thick or as thick as the flange area on the MC-channel to get the same structural properties in the direction the channel would normally see a force. Then the web area would be much thicker than on the MC-channel making it heavier over all.

just my 2 cents
Like • Show 0 Likes0
Actions
- Vince Adams @ Garrett Brooks on Nov 26, 2008 12:45 PM
  Unmark Correct
  Correct Answer
  Hi Sandeep, the best answer to this question is... "It depends."
  
  If your C Channel is loaded prefectly parallel to the 'legs' only, matching the section modulus should be sufficient. However, for any other loading, (torsion or side loading), you should run the two sections thru Simulation to verify the response.
  
  To Bill's point, running a Buckling study using both designs and the anticipated loading, you should see a similar buckling load factor (the primary output from a buckling study). Hopefully they are both greater than 2 or 3.
  
  Good luck!
  
  Vince
  Like • Show 0 Likes0
  Actions
  - sandeep pawar @ Vince Adams on Nov 26, 2008 12:55 PM
    Mark Correct
    Correct Answer
    Thanks Bill, Garrett and Vince. Looking at your answers, I think I was going in right direction.
    
    Thanks a ton.
    
    ~Sandeep
    Like • Show 0 Likes0
    Actions

Structural Member to sheetmetal

Outcomes

Related Content

Recommended Content