Axial compression & bending stress

[sivasooriyan]

Dear all,

Is there any chance of uniaxial load act on circular hollow section?

I have to design one circular column (document attached). I have selected the formula (attached) from aluminum design manual.

As per attached formula, I need to calculate Major principal axis and minor principal axis bending.

As Ixx & Iyy is equal in circular section, i am confused to take major and minor axis.

shall i take 0 in minor axis bending moment?

request all help me to solve this.

 

[sivasooriyan]

Dear all,

Is there any chance of uniaxial load act on circular hollow section?

I have to design one circular column (document attached). I have selected the formula (attached) from aluminum design manual.

As per attached formula, I need to calculate Major principal axis and minor principal axis bending.

As Ixx & Iyy is equal in circular section, i am confused to take major and minor axis.

shall i take 0 in minor axis bending moment?

request all help me to solve this.

 

[rb1957]

yes, if you have a round section, then the moment vector aligns with the principal direction, and then there is no other moment acting, so zero.

"Hoffen wir mal, dass alles gut geht !"
General Paulus, Nov 1942, outside Stalingrad after the launch of Operation Uranus.

 

[jjl317]

For what it's worth, examples 4 and 15 in the back of ADM 2010 address bending and compression of pipes

 

[dik]

ADM ???

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

[jjl317]

Sorry - Aluminum Design Manual from Aluminum Association - OP had included a page from it, but I should have been clearer.

 

[HTURKAK]

In this case , “All Roads Lead to Rome”...

- You may choose bigger moment axis major and other is minor ,

- Or you may calculate the resultant moment Mr= SQRT( M1**2 +M2**2) and assume the major axis at Mr and Mmin is zero as pointed out by rb1957 (Aerospace)..








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