An analytical investigation of the problem of the indentation of composite sandwich beams with partially delaminated face sheets is presented in this paper. A model has been formulated that represents the damaged face as an elastic beam resting on an elastic-perfectly plastic foundation. The results show the influence of the damaged area on the behavior of the system: the indentation load is lower than that of an intact beam and the reduction is more important on increasing the number of delaminations or their lengths; the critical load for progressive yielding of the core is also affected by the presence of a damaged area whose influence decreases on increasing the size of the plastic zone.
Influence of skin damage on the indentation behavior of sandwich beams
CAMPI, FRANCESCA;MASSABO', ROBERTA
2008-01-01
Abstract
An analytical investigation of the problem of the indentation of composite sandwich beams with partially delaminated face sheets is presented in this paper. A model has been formulated that represents the damaged face as an elastic beam resting on an elastic-perfectly plastic foundation. The results show the influence of the damaged area on the behavior of the system: the indentation load is lower than that of an intact beam and the reduction is more important on increasing the number of delaminations or their lengths; the critical load for progressive yielding of the core is also affected by the presence of a damaged area whose influence decreases on increasing the size of the plastic zone.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.