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(Solved) 1 Atlas of Stress-Strain Curves pg. 415 On a site visit, a


1 Atlas of Stress-Strain Curves pg. 415

On a site visit, a structural engineer discovers a severely damaged tube column made of 6061-T6 Al in a machine frame (see Figure 1.3). The columns original cross section is shown in Figure 1.4, and what the engineer assumes for the damaged cross section is shown in Figure 1.5. In addition to this, the engineer discovers that the client has removed one brace from the damaged column to facilitate the operation of the machine. The structural engineer concludes that this has effectively increased the unbraced length of the column from 8 ft. to 16 ft. How much has the damage and modification to the structure reduced the load capacity of the column? If the original design load for the column was 50 kips (note 1 kip = 1000 lbf), is the damaged and modified column in danger of a buckling failure? (3%)

Figure 1.3

Figure 1.5

Figure 1.4

 


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