
#1
Jan514, 07:08 AM

P: 60

What is the best/easiest method I can use to get the deflections of a 5storey, 3bay frame subjected to lateral loads only? I've used the Elemental stiffness matrix for twodimensional frame analysis (giving me a 60 x 60 matrix) but I'm getting the wrong deflection values. I think my procedure is erroneous because I've only referred to a single storey, single bay frame example in the book. Any help would be appreciated. Thanks.




#2
Jan514, 10:46 AM

Engineering
Sci Advisor
HW Helper
Thanks
P: 6,388

The method you used is OK, so you must have made a mistake somewhere.
The "easiest" way is use a finite element analysis computer program instead of setting setting up the stiffness matrix yourself  but if the objective is to learn how the FE method works, not to design a building, then you do need to work through the details yourself. 



#3
Jan514, 01:14 PM

Sci Advisor
HW Helper
P: 2,110

median27: I am not sure what the "Elemental stiffness matrix for twodimensional frame analysis" method is, unless it is just the finite element method. The best and easiest method is the finite element method. Are all of your connections moment connections? Are all of your applied loads nodal applied loads, not uniformlydistributed loads? Do you have a finite element analysis software program? Is this a school assignment, or test question?



Register to reply 
Related Discussions  
Local strain energy density for a plate subjected to inplane linear load  Mechanical Engineering  1  
Why does the beam's deflection diagram smile when subjected to load?  Mechanical Engineering  4  
What is the formula for bending moment of a beam subjected to UDL and a point load?  Engineering, Comp Sci, & Technology Homework  11  
Load combo's on footing subjected to large wind loads  General Engineering  1  
Calculating the load rating for a multibar hinge?  General Engineering  1 