Numerical Simulation of Bird Body Impact Composite Laminate Based on SPH Method

YANG Zheng-xin, XU Shuo, DANG Peng-fei, GONG Bin

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Plastics Science and Technology ›› 2024, Vol. 52 ›› Issue (10) : 125-129. DOI: 10.15925/j.cnki.issn1005-3360.2024.10.025
Computer Aided Technology

Numerical Simulation of Bird Body Impact Composite Laminate Based on SPH Method

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Abstract

Carbon fiber composites have excellent mechanical properties and are widely used in aerospace and other fields, but they are easily damaged by the impact of birds in flight, so it is of great significance to study the process of bird body impact composite laminates. In this study, the process of the impact of the carbon fiber composite laminate on the bird body was analyzed and studied based on the smooth particle hydrodynamics (SPH) method and the Ls-Dyna prepost display dynamics. Firstly, the Lagrangian model was used to establish the finite element model of carbon fiber composite laminates, and the SPH method was used to establish the bird body model. Secondly, the influence of different velocities and different attitude angles on the contact force and the energy dissipation of the laminate during the collision between the bird body and the laminate were considered. Finally, the influence of laminate on the energy absorption effect of bird strikes under different ply angles was analyzed. The results show that the peak contact force increases with the increase of the impact velocity. At a bird attitude angle of 60°, the laminate absorbs more kinetic energy. The laminate with a ply angle of [0/90/0/90/0/0/90/0/90] has the best impact resistance, and a reasonable ply angle can improve the energy absorption effect of the composite laminate.

Key words

Composite laminates / Bird strike / SPH / Ply angles

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YANG Zheng-xin , XU Shuo , DANG Peng-fei , et al. Numerical Simulation of Bird Body Impact Composite Laminate Based on SPH Method. Plastics Science and Technology. 2024, 52(10): 125-129 https://doi.org/10.15925/j.cnki.issn1005-3360.2024.10.025

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