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Steel and Composite Structures Volume 49, Number 3, November 10 2023 , pages 281-291 DOI: https://doi.org/10.12989/scs.2023.49.3.281 |
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Nonlinear low-velocity impact response of graphene platelets reinforced metal foams doubly curved shells |
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Hao-Xuan Ding, Yi-Wen Zhang, Yin-Ping Li and Gui-Lin She
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| Abstract | ||
| Due to the fact that the nonlinear low-velocity impact response of graphene platelets reinforced metal foams (GPLRMF) doubly curved shells have not been investigated in the existing works, this paper aims to solve this issue. Using Reddy's high-order shear deformation theory (HSDT), the nonlinear governing equations of GPLRMF doubly curved shells are obtained by Euler-Lagrange method, discretized by Galerkin principle, and solved by the fourth-order Runge-Kutta method to obtain the impact force and central deflection. The nonlinear Hertz contact law is applied to determine the contact force. Finally, the impacts of graphene platelets (GPLs) distribution pattern, porosity distribution form, porosity coefficient, damping coefficient, impact parameters (radius and initial velocity), GPLs weight fraction, pre-stressing force and different shell types on the low-velocity impact curves are analyzed. It can be found that, among the four shell structures, the impact resistance of spherical shell is the best, while that of cylindrical shell is the worst. | ||
| Key Words | ||
| doubly curved shells; graphene platelets; low-velocity impact; metal foam; nonlinear | ||
| Address | ||
| Hao-Xuan Ding, Yi-Wen Zhang, Yin-Ping Li and Gui-Lin She:College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing 400044, China | ||