TY - JOUR
T1 - A homogenization method for natural frequencies and damping of sandwich panels based on representative volume elements
AU - Guan, Chengyu
AU - Lou, Ruishen
AU - Chen, Yanhong
AU - Qin, Chengwei
AU - Shi, Zhiyuan
AU - Liang, Lihong
AU - Li, Huimin
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2024/2/1
Y1 - 2024/2/1
N2 - The existing representative volume element (RVE) homogenization method, grounded in finite element analysis, assumes a planar configuration for the sections of sandwich panels, implying rigidity. To accommodate non-planar displacements, this study introduces a novel homogenization method reliant on the displacements obtained from four-point bending and four-point torsion. The present method is employed to investigate the mode shapes, natural frequencies, and loss factors of sandwich panels utilizing an equivalent single-layer shell model. Validation of the present method is conducted through the analysis of lattice sandwich panels and corrugated sandwich panels incorporating viscoelastic layers. Comparative analyses encompassing the results of the experiment, the conventional solid model method, the present method, and the conventional plane method are undertaken. The universality of the present method is substantiated. The present method enhances the precision of natural frequency prediction.
AB - The existing representative volume element (RVE) homogenization method, grounded in finite element analysis, assumes a planar configuration for the sections of sandwich panels, implying rigidity. To accommodate non-planar displacements, this study introduces a novel homogenization method reliant on the displacements obtained from four-point bending and four-point torsion. The present method is employed to investigate the mode shapes, natural frequencies, and loss factors of sandwich panels utilizing an equivalent single-layer shell model. Validation of the present method is conducted through the analysis of lattice sandwich panels and corrugated sandwich panels incorporating viscoelastic layers. Comparative analyses encompassing the results of the experiment, the conventional solid model method, the present method, and the conventional plane method are undertaken. The universality of the present method is substantiated. The present method enhances the precision of natural frequency prediction.
KW - Damping
KW - Finite element analysis
KW - Representative volume element
KW - Sandwich structures
KW - Vibration
UR - http://www.scopus.com/inward/record.url?scp=85178662684&partnerID=8YFLogxK
U2 - 10.1016/j.compstruct.2023.117740
DO - 10.1016/j.compstruct.2023.117740
M3 - Article
AN - SCOPUS:85178662684
SN - 0263-8223
VL - 329
JO - Composite Structures
JF - Composite Structures
M1 - 117740
ER -