Pls Hlp Me to Understand

Posted by: pipengg306

Pls Hlp Me to Understand - 11/26/10 12:52 AM

hi richard,

i modeled in caeser to check the stresses, forces, moments for 12" - STD shd, Insulation 2", Material A106 Gr B


from node 10 to 20 DX= 11 ft, anchor at node 10.

then i have FY= 626


MX=0, MY=0, MZ = 4333. MY DOUBT IS THAT HOW WE GOT MOMENT IN Z DIRECTION AT NODE 10.


PLS HLP ME
Posted by: danb

Re: Pls Hlp Me to Understand - 11/26/10 01:36 AM

Simple, you have a cantilever that have "Weight" and is oriented on x axis. Hence you have MZ.

Before anything else, please read again your university courses "strength of materials".

Regards,
Posted by: Michael_Fletcher

Re: Pls Hlp Me to Understand - 12/01/10 08:55 AM

If it is an 11 foot beam that should weigh 626 lbs, the CG should be at 5.5' away from the anchor.

5.5 x 626 = 3433. You cite 4333, is that a typographical error on your part, or is that really 4333?
Posted by: danb

Re: Pls Hlp Me to Understand - 12/02/10 02:59 AM

It was a typographical error on his part. Good eye. It was 3443.1.As being so simple, I reconstructed the model.

In this way you performed also the program validation. smile

Best regards,
Posted by: danb

Re: Pls Hlp Me to Understand - 12/02/10 07:50 AM

And Michael, guess what. 5.5 x 626 = 3443 not 3433 smile


Regards,
Posted by: Michael_Fletcher

Re: Pls Hlp Me to Understand - 12/13/10 01:01 PM

blush Shame on both of us. smile