The efficient data-driven solution to estimate the nonlinear bending of sandwich doubly curved panel subjected to transient loading
This paper investigates nonlinear transient bending characteristics of sandwich doubly curved panels under
transient loading which is extensively used in aerospace structures. Due to the lack of a dataset for the nonlinear
transient bending of the sandwich doubly curved panel for the data-driven solution, mathematical modeling is
used. The sandwich doubly curved panel is made of two graphene nanoplatelets (GPLs) reinforced face sheets,
and a polymer core. In the mathematical modeling section, the effective Young’s modulus is obtained via
modified Halpin-Tsai methodology, and the role of the mixture is used to estimate other material properties of
the composite face sheets. The presented structure is analyzed using Reddy’s third-order shear deformation
theory (RTSDT), which incorporates von K´arm´an nonlinear geometric assumptions and Hamilton’s principle. The
governing equations and associated boundary conditions are derived accurately by imposing shear stress-free
conditions on the upper and lower surfaces of the panel. The meshfree radial point interpolation method
(RPIM) with interpolation functions is utilized to determine the unknown degrees of freedom to numerically
simulate the mid-plane of the sandwich doubly-curved panel. The Newton-Raphson approach is used to solve the
nonlinear ordinary differential using the constant-average acceleration strategy from Newmark’s time integration
method. After obtaining the dataset, the data is collected, and using an efficient data-driven approach, the
results are tested, validated, and trained. In future studies, the presented efficient data-driven approach can be
used with low computational cost to simulate nonlinear transient bending characteristics of sandwich doubly
curved panels under transient loading for related aerospace industries.
This paper investigates nonlinear transient bending characteristics of sandwich doubly curved panels under
transient loading which is extensively used in aerospace structures. Due to the…
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