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Analysis of impact resistance of core structural reinforcement composite based on finite element analysis

  

  • Online:2015-08-15 Published:2015-08-15

Abstract:

In order to study the impact resistance of an O-shaped hollow core structural fiber reinforcement composite, the structural dynamic mechanicalresponses of such type of composite subjected to the ballistic impact at serious striking wvlocities were calculated and compared by finite element analysis ( FEA ) . By comparatively analyzing the evlocity-time curves and acceleration-time curves of the projectiles with different striking velocities, and the structural damage morphologies and modes of composite targets, as well as the effects of fiber volume fraction on the impact-resistance peoperty of the composite, it was found that the velocity degradation peocess of the project can be divided into three distinct stages. The fluctuation in acceleration can directly indicated the change of reaction force at projectile which was induced by the composite composite target. The damage magnitude of composite target showed a certain of law by reason of the different striking velocities, it was related to the proportion of the impact energy which was absorbed and dissipated by the composite. Furthermore, in general, the composite showed better impact resistance as the fiber volume fraction increased. 

Key words: O-shaped core structure, composite, impact resistance, finite element analysis

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