TY - JOUR
T1 - Experimental and numerical vibration correlation of pre-stressed laminated reinforced panel
AU - H. Cabral, Pedro
AU - Carrera, Erasmo
AU - dos Santos, Henrique E.A.A.
AU - Galeb, Pedro H.G.
AU - Pagani, Alfonso
AU - Peeters, Daniel
AU - Prado, Alex P.
PY - 2020
Y1 - 2020
N2 - This research work deals with the buckling load prediction of reinforced laminated composite panels of aeronautical interest. Being subjected to pure compression, these panels are characterized by stable post-buckling. Thus, the vibration correlation technique (VCT) is utilized herein as an effective nondestructive means to extrapolate critical loads from free vibration measurements. A hierarchical design of experiments, making use of nested multifactors (i.e. panel replicas, test setups, and measurement repetitions), is employed to estimate components of variance. The experimental outcomes are compared with the results of an advanced finite element model with layer-wise kinematics and based on the Carrera Unified Formulation (CUF). The results show that, although obtained with a low number of tests and specimens, the VCT experiments are repeatable and provide a good validation of the numerical simulations, which are demonstrated to be accurate and reliable.
AB - This research work deals with the buckling load prediction of reinforced laminated composite panels of aeronautical interest. Being subjected to pure compression, these panels are characterized by stable post-buckling. Thus, the vibration correlation technique (VCT) is utilized herein as an effective nondestructive means to extrapolate critical loads from free vibration measurements. A hierarchical design of experiments, making use of nested multifactors (i.e. panel replicas, test setups, and measurement repetitions), is employed to estimate components of variance. The experimental outcomes are compared with the results of an advanced finite element model with layer-wise kinematics and based on the Carrera Unified Formulation (CUF). The results show that, although obtained with a low number of tests and specimens, the VCT experiments are repeatable and provide a good validation of the numerical simulations, which are demonstrated to be accurate and reliable.
KW - Composite stiffened panel
KW - design of experiments
KW - layerwise models
KW - vibration correlation technique
UR - http://www.scopus.com/inward/record.url?scp=85097147263&partnerID=8YFLogxK
U2 - 10.1080/15376494.2020.1853285
DO - 10.1080/15376494.2020.1853285
M3 - Article
AN - SCOPUS:85097147263
SN - 1537-6494
VL - 29
SP - 2165
EP - 2175
JO - Mechanics of Advanced Materials and Structures
JF - Mechanics of Advanced Materials and Structures
IS - 15
ER -