Crimped Plate Critical Buckling Stress

[engpes]

I am designing a crimped plate bulkhead (1/4" thk) to go on an ABS classed vessel. Is there a general reference / guidline for determining the critical buckling stress for a compressive load applied to the wall (see attached sketch)?

I believe Bureau Veritas has some guidelines for determining the critical buckling (in terms of stress) of crimped plate, but I cannot seem to locate it.

Thanks,

 

[engpes]

Sorry, see attached sketch here.

 

[BAretired]

You don't provide a great deal of dimensional information on your sketch, but I cannot see this being a special structure, i.e. I would calculate the radius of gyration, consider the L/r and design it as a column of that slenderness. There could be a problem if the length between folds is very large, but it doesn't appear to be from your sketch.

BA

 

[JStephen]

Regular steel codes would cover the geometry adequately. I would assume ship-building use would put it under some other code, though.

The geometry is similar to sheet piling and to fluted-pedestal water towers.

 

[rb1957]

a lazy way these days would be to run a static FEA and look for the eigenvalue ...

is this plate going to resist only in-plane loads ? only axial ??

 

[trainguy]

If you can get your hands on Alcan - Strength of Aluminum (1983), there are equations for corrugated plate, for stability both in compression and in shear.

tg

 

[rb1957]

anyone ? a google search gets you oh so close (a hit in open library is just a page holder). and Alcan only gives a phone number to contact them ... geez

 

[NLENG]

The design of corrugated or crimped plate bulkheads is covered in the following publication which is available for download on the American Bureau of Shipping (ABS) website:

ABS GUIDE FOR BUCKLING AND ULTIMATE STRENGTH ASSESSMENT FOR OFFSHORE STRUCTURES, Section 3.0