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A platform for research: civil engineering, architecture and urbanism
Longitudinal bending of corrugated sandwich panels with cores of various shapes
https://orcid.org/0000-0003-4877-303X
https://orcid.org/0000-0001-8463-0568
Abstract The mechanical response of aluminium corrugated sandwich panels with cores of different shapes subjected to longitudinal three-point bending is investigated experimentally and numerically in this paper. The shapes of the core are sinusoid, triangle, trapezoid, and rectangle, respectively. The experimental and simulated results match well with each other. Subsequently, numerical models with specific boundary conditions are developed to simulate the corrugate sandwich panels with an infinite number of core cells. Parametric studies are conducted using these numerical models. The effects of core web thickness, core length, and corrugation angle are investigated numerically. Two deformation modes (Mode I and Mode II) are observed. The panels that deform in Mode I have a larger indentation area and minor global bending. Mode I tends to happen in panels with weaker core webs. Finally, the multiobjective Bayesian optimization method based on lower confidence bound (LCB) criterion is adopted to optimize the geometry of trapezoidal corrugated sandwich panels to improve the specific energy absorption (SEA) and reduce the intrusion depth during the bending.
Highlights The longitudinal bending of corrugated sandwich panels with various cores was investigated. Numerical models to mimic corrugate sandwich panels with infinite number of core cells were developed. The multiobjective Bayesian optimization was adopted to optimize the geometry of the trapezoidal corrugated sandwich panel.
Longitudinal bending of corrugated sandwich panels with cores of various shapes
https://orcid.org/0000-0003-4877-303X
https://orcid.org/0000-0001-8463-0568
Abstract The mechanical response of aluminium corrugated sandwich panels with cores of different shapes subjected to longitudinal three-point bending is investigated experimentally and numerically in this paper. The shapes of the core are sinusoid, triangle, trapezoid, and rectangle, respectively. The experimental and simulated results match well with each other. Subsequently, numerical models with specific boundary conditions are developed to simulate the corrugate sandwich panels with an infinite number of core cells. Parametric studies are conducted using these numerical models. The effects of core web thickness, core length, and corrugation angle are investigated numerically. Two deformation modes (Mode I and Mode II) are observed. The panels that deform in Mode I have a larger indentation area and minor global bending. Mode I tends to happen in panels with weaker core webs. Finally, the multiobjective Bayesian optimization method based on lower confidence bound (LCB) criterion is adopted to optimize the geometry of trapezoidal corrugated sandwich panels to improve the specific energy absorption (SEA) and reduce the intrusion depth during the bending.
Highlights The longitudinal bending of corrugated sandwich panels with various cores was investigated. Numerical models to mimic corrugate sandwich panels with infinite number of core cells were developed. The multiobjective Bayesian optimization was adopted to optimize the geometry of the trapezoidal corrugated sandwich panel.
Longitudinal bending of corrugated sandwich panels with cores of various shapes
https://orcid.org/0000-0003-4877-303X
https://orcid.org/0000-0001-8463-0568
Abstract The mechanical response of aluminium corrugated sandwich panels with cores of different shapes subjected to longitudinal three-point bending is investigated experimentally and numerically in this paper. The shapes of the core are sinusoid, triangle, trapezoid, and rectangle, respectively. The experimental and simulated results match well with each other. Subsequently, numerical models with specific boundary conditions are developed to simulate the corrugate sandwich panels with an infinite number of core cells. Parametric studies are conducted using these numerical models. The effects of core web thickness, core length, and corrugation angle are investigated numerically. Two deformation modes (Mode I and Mode II) are observed. The panels that deform in Mode I have a larger indentation area and minor global bending. Mode I tends to happen in panels with weaker core webs. Finally, the multiobjective Bayesian optimization method based on lower confidence bound (LCB) criterion is adopted to optimize the geometry of trapezoidal corrugated sandwich panels to improve the specific energy absorption (SEA) and reduce the intrusion depth during the bending.
Highlights The longitudinal bending of corrugated sandwich panels with various cores was investigated. Numerical models to mimic corrugate sandwich panels with infinite number of core cells were developed. The multiobjective Bayesian optimization was adopted to optimize the geometry of the trapezoidal corrugated sandwich panel.
Longitudinal bending of corrugated sandwich panels with cores of various shapes
Xia, Fukun (author) / Pang, Tong (author) / Sun, Guangyong (author) / Ruan, Dong (author)
Thin-Walled Structures ; 173
2022-01-26
Article (Journal)
Electronic Resource
English
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