Open AccessHybrid Damage Prediction Procedure for Composite Laminates Submitted to Spectra Loading
Author(s) -
Mohammed Bousfia,
Aezeden Mohamed,
Brahim Ouhbi
Publication year - 2021
Publication title -
wseas transactions on applied and theoretical mechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.211
H-Index - 10
eISSN - 2224-3429
pISSN - 1991-8747
DOI - 10.37394/232011.2020.15.27
Subject(s) - composite number , composite laminates , quadrature (astronomy) , stiffness , structural engineering , vibration , materials science , convergence (economics) , composite material , engineering , acoustics , physics , economic growth , electrical engineering , economics
In this document, a hybrid procedure is constructed in order to predict the damage of a composite unidirectional laminate under random loading. This procedure is based on two pillars: a stiffness degradation model (SD-M) combined with an energy approach taking into account the effect of load ratio in addition to a system of equations generated by SSDQM method (Space State Differential Quadrature Method) which we have solved with a novel technic. The outputs of SSDQM method, previously serving for free vibration behavior analysis of composite structures, are used with those of SD-M model to predict damage failure of a composite laminate subjected to spectra loading. The results obtained correlate very well with experimental ones and an extensive comparison with other models validate the accuracy and convergence characteristics of this hybrid procedure.