How much eccentricity for a buckling load?
How much eccentricity for a buckling load?
(OP)
Hi,
As you know, there are a number of semi-empirical formulas for buckling in columns in the intermediate length range. One of these is the J.B. Johnson Formula. I would like to know how much eccentricity (e) you consider for a column with length L?
I am looking for a realistic e/L ratio (rule of thumb which is not too much conservative).
FYI, I found in different stress reports ratios from 1/400 to 1/100.
Thanks,
A.A.Y.
As you know, there are a number of semi-empirical formulas for buckling in columns in the intermediate length range. One of these is the J.B. Johnson Formula. I would like to know how much eccentricity (e) you consider for a column with length L?
I am looking for a realistic e/L ratio (rule of thumb which is not too much conservative).
FYI, I found in different stress reports ratios from 1/400 to 1/100.
Thanks,
A.A.Y.





RE: How much eccentricity for a buckling load?
what is the specific application?
how is the load introduced at the ends?
what are the boundary conditions?
how is the part fabricated?
I have seen analysis done with no eccentricity (offset) all the way up to applying a momeent equal to 10% of P.
RE: How much eccentricity for a buckling load?
I am sorry, I did not give you enough details. Following are my responses:
what is the specific application? Landing Gear Structures
how is the load introduced at the ends? A uniform column is subjected to a concentrated axial load.
what are the boundary conditions? Pinned Ends
how is the part fabricated? Machined Parts
Thanks,
A.A.Y.
RE: How much eccentricity for a buckling load?
RE: How much eccentricity for a buckling load?
A.A.Y.