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The Tsai-Wu failure criterion differs from a maximum stress criterion in that it

  • A.Considers only tensile failure
  • B.Applies only to isotropic materials
  • C.Ignores the shear strength
  • D.It uses one interactive expression

Answer: D

Maximum stress checks each direction independently, whereas Tsai-Wu combines them into one quadratic that accounts for interaction between the stress components. It fits data better but does not identify which mode caused failure.

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