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| Dynamic energy absorption performance of arrow type honeycomb structure with negative Poisson’s ratio under impact load |
| BAI Linqi, SHI Xiaoquan, LIU Hongrui, SUN Yazhou |
| School of Mechanical and Electrical Engineering， Harbin Institute of Technology， Harbin 150001， China |
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Abstract Here, taking an arrow type honeycomb structure with negative Poisson’s ratio as the study object, based on the existing theoretical stress model of honeycomb structure platform under impact load, its theoretical model of energy absorption under impact load was established considering platform area and platform stress enhancement area, and relations between the absorbed energy and the corresponding equivalent stress and geometric parameters in different stages under impact load were obtained.Based on the simulation software ANSYS, the energy absorption and stress of the arrow type honeycomb structure with negative Poisson’s ratio under impact load were simulated.The simulation results were compared with the theoretical model results to verify the theoretical model.The results showed that the proposed theoretical model can accurately describe the dynamic energy absorption performance of honeycomb structure under impact load, and provide a guidance for geometric parameter choosing and optimal design of honeycomb structure with negative Poisson’s ratio.
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Received: 22 April 2020
Published: 15 June 2021
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