Viscoelastic panel flutter - Stability, probabilities of failure and survival times

Light weight flexible structures subjected to aeroelastic conditions need to be analyzed only for time independent stability co#HT3cqEP (Bisplingho# et al. 1955). Similarvisco elastic structures,o# theo#ec7 hand, exhibitdegradatio#T in timeo# mo duli as well as o# failure pro# erties and are subject to di#erent stability criteria and additio#cq survivabilityco#T37k eratio# in time absentfro# equivalentelasticpro#7Pco (Beldica et al. 1998a, 1998b, 1999; Hilto# 1957, 1960; Hilto# et al. 1993a, 1999). Po#TDTP matrixco#r o##rix have beco#& the structural materialso# cho#ET becauseo# their light weight and relatively high failure stresses whichpro duce very attractive strength to weightratio#k Eventho#RE their initial behavio# is elastic,co#s o##sti and metals at elevated temperatures requirevisco elastic stress-strain and failure analyses. At these co#sec tio#s elastic analyses are inadequate because they failto take into acco#k t materialpro# erty degradatio# time dependencieso# mo duli and...

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