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auto modal assurance criterion AutoMAC

Standard

ECSS-E-ST-32-11C - Modal survey assessment (31 July 2008)

Definition

measure of the degree of correlation between two mode shapes of the same mode shape set

Notes

  • NOTE 1 For example, test mode shapes or analysis mode shapes.
  • NOTE 2 The AutoMAC is a specific case of the MAC (see 3.2.26) the AutoMAC matrix is symmetric.
  • NOTE 3 The AutoMAC is particularly useful for assessing whether a given selection of DOFs is adequate for MAC evaluations employing two different sets of mode shapes (e.g. test and analysis).

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