WIT Press

Cumulative Damage Diagnosis Of Smart Structures Under Dynamic Loading

Price

Free (open access)

Paper DOI

10.2495/SM980161

Volume

38

Pages

10

Published

1998

Size

633 kb

Copyright

WIT Press

Author(s)

J. Cacko

Abstract

Smart structures must modify their response mechanisms according to changeable loading conditions. Therefore, it is very important to estimate a damage effect of a dynamic loading and to predict a fatigue life of structures. An estimation of cumulative damage under dynamic loading is described in the paper. Basis of the method consists in specification of an equivalent amplitude of the harmonic cycle with zero stress and strain mean values. At the same time, a relative damage that is accumulated in the course of the equivalent cycle must be equal to the relative damage of the actual cycle that has been identified using the rainflow method. This procedure allows to determine the response value under either stress or strain control, without

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