Numerical analysis of dynamic response of ceramic particle reinforced polyurethane composites under explosive loading

ZOU Guangping; LIANG Zheng; WU Songyang; CHANG Zhongliang

doi:10.11883/bzycj-2022-0254

Volume 43 Issue 7

Jul. 2023

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ZOU Guangping, LIANG Zheng, WU Songyang, CHANG Zhongliang. Numerical analysis of dynamic response of ceramic particle reinforced polyurethane composites under explosive loading[J]. Explosion And Shock Waves, 2023, 43(7): 073104. doi: 10.11883/bzycj-2022-0254

Citation:

ZOU Guangping, LIANG Zheng, WU Songyang, CHANG Zhongliang. Numerical analysis of dynamic response of ceramic particle reinforced polyurethane composites under explosive loading[J]. Explosion And Shock Waves, 2023, 43(7): 073104. doi: 10.11883/bzycj-2022-0254

Citation:

ZOU Guangping, LIANG Zheng, WU Songyang, CHANG Zhongliang. Numerical analysis of dynamic response of ceramic particle reinforced polyurethane composites under explosive loading[J]. Explosion And Shock Waves, 2023, 43(7): 073104. doi: 10.11883/bzycj-2022-0254

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Numerical analysis of dynamic response of ceramic particle reinforced polyurethane composites under explosive loading

doi: 10.11883/bzycj-2022-0254

College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, Heilongjiang, China

Received Date: 2022-06-08
Rev Recd Date: 2022-09-16

Available Online: 2022-09-20

Publish Date: 2023-07-05

Abstract

Abstract

As a traditional energy absorbing and shock absorbing protective material, polyurethane has high requirements for its dynamic mechanical properties. An effective way to improve the impact resistance of polyurethane is to add ceramic balls as reinforcement in polyurethane matrix. The existing research on ceramic ball reinforced materials mainly focuses on nano and micro scale. The dynamic response of Al₂O₃ ceramic ball reinforced polyurethane matrix composites under small equivalent explosion load was simulated by establishing a numerical model of polyurethane embedded millimeter ceramic ball and using ALE algorithm of LS-DYNA and the correctness of the numerical model was verified by the empirical formula of henrych’s free field explosion overpressure and the penetration experiment of polyurethane-ceramic sphere composite plate. The deformation process of the composite plate was obtained and through the comparison of the acceleration of the composite plate and the pure polyurethane, it was found that the acceleration of the ceramic ball and the polyurethane always maintain the opposite direction, which proves that the existence of the ceramic ball reduces the overall acceleration fluctuation range; Furthermore, the effects of explosion equivalent on the velocity, displacement and energy absorption of composite plates and the effects of different explosion equivalent and ceramic ball size on the properties of composite materials under a certain areal density were discussed. The results show that the overall acceleration fluctuation range of polyurethane-ceramic balls composite material is about 1×10⁵ m/s² lower than that of pure polyurethane. With the increase of explosive equivalent, the deflection of the composite increased steadily to 1 mm, and the energy absorption proportion of polyurethane increased from 69.6% to 80.3%. Under the same areal density, both the deformation resistance of the composite plate and the overall acceleration fluctuation range increases with the increase of the diameter of the ceramic ball.
- polyurethane,
- ceramic balls,
- explosion shock,
- dynamic response

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References

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