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The chief risk of an over-simplified idealisation is that it

  • A.Takes too long to compute
  • B.Produces results that are too accurate
  • C.Requires too much computer memory
  • D.Omits a real load path

Answer: D

Removing a member or a connection that genuinely carries load redistributes the predicted stresses away from reality, and the error can be unconservative. Every simplification should be justified by asking what load path it removes and whether that matters.

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