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An idealisation for a compression-critical panel must account for

  • A.Neither
  • B.Both effective width and crippling
  • C.Effective width alone
  • D.Crippling alone

Answer: B

The two interact: the stiffener's crippling stress sets how hard it can be worked, and that stress in turn determines how much skin remains effective. An iterative calculation is usually needed to settle both together.

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