×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Slenderness of columns

Slenderness of columns

Slenderness of columns

(OP)
I tried to find (I am not good at it) CosmosXrpress forum but could not.

- Could anybody give me link to cosmosexpress forum ?

- More important - I need a quick answer: Does the CosmosXpress considers slenderness of columns ---> buckling when columns are subject to compression load ? I guess it does but I would like to hear it from some gurus.

Thaks in advance.

RE: Slenderness of columns

I don't think there is a forum for COSMOSXpress.  There is one titled "SolidWorks: COSMOS" <http://www.eng-tips.com/threadminder.cfm?pid=1183>

COSMOSXpress is very limited.  Probably does not have buckling.  I haven't seen it.

RE: Slenderness of columns

(OP)
I remodeled the column to have it with a very thin wall - 1/8" instead of previous 1/2" hoping that this time it would almost certainly buckle up.

The program did NOT finished (I tried it twice) - this time I am getting message: Not enough boudary conditions.

My guess it - it means the vertical column simply collapsed ?

RE: Slenderness of columns

I doubt COSMOS Express would be failing because of the memeber failing under buckling.

I would be very very wary of using Cosmos express in this way.

There are some very simple calculations available for buckling by (amongst others) a chap named Euler.

In its simplest form for pinned ends  

Pcritical=(pi^2EI)/(l^2)

Where Pcritical is the critical buckling load, E is modulus (207 GPa for steel) and I is the second moment of area of the column.

DW

RE: Slenderness of columns

COSMOSExpress doesn't do Buckling.  Why don't you just do the hand calculation.  They're not hard....grab a copy of Roake's Formulas for Stress & Strain - chapter 11 Columns

Euler's Formula P/A = Cpi^2E/(L/r)^2

Depending on your specific column geometry their are several conditional set ups.

Best Regards,

Heckler
Sr. Mechanical Engineer
SW2005 SP 5.0 & Pro/E 2001
Dell Precision 370
P4 3.6 GHz, 1GB RAM
XP Pro SP2.0
NVIDIA Quadro FX 1400
      o
  _`\(,_
(_)/ (_)

Never argue with an idiot. They'll bring you down to their level and beat you with experience every time.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources