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Diffusion of a concentrated load into a stiffened panel occurs over

  • A.The whole length of the panel regardless
  • B.A length independent of the structure
  • C.A finite length set by stiffness ratio
  • D.Zero length, immediately

Answer: C

Load fed into one stiffener spreads into its neighbours through shear in the skin, and the distance required depends on the stiffness ratio. Shear lag analysis quantifies it, and it is the reason a fitting's influence extends well beyond its immediate attachment.

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