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High-velocity impact responses of 2618 aluminum plates for engine containment systems under combined actions of projectile form and oblique angle 被引量:2

High-velocity impact responses of 2618 aluminum plates for engine containment systems under combined actions of projectile form and oblique angle
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摘要 Ballistic impact tests were carried out with examined projectiles of the Ti-6Al-4V titanium alloy to investigate the impact response of the 2618 aluminum plates at a nominal velocity of 210 m/s. The influence of projectile forms and oblique angles on damage formation was particularly discussed by applying different loading conditions such as multiple projectile forms and oblique angles. Additionally, the numerical simulation method was employed to provide further insight into the characteristics of damage and target responses. The Johnson-Cook(J-C)constitutive model with revised failure parameters was used to support the simulations to assess target responses and characteristics of the damage created from different impact conditions. Results show that there is a significant transition in the deformation mode as changes of the projectile form are applied. Moreover, the cracks on the back of the 2618 aluminum alloy plates impacted by the solid plate projectile and the hollow blade projectile tend to locate at different positions, which are supposed to be influenced by local bending and stretching. The work in this paper may provide guidance for the design of fan blade containment systems. Ballistic impact tests were carried out with examined projectiles of the Ti-6Al-4V titanium alloy to investigate the impact response of the 2618 aluminum plates at a nominal velocity of 210 m/s. The influence of projectile forms and oblique angles on damage formation was particularly discussed by applying different loading conditions such as multiple projectile forms and oblique angles. Additionally, the numerical simulation method was employed to provide further insight into the characteristics of damage and target responses. The Johnson-Cook(J-C)constitutive model with revised failure parameters was used to support the simulations to assess target responses and characteristics of the damage created from different impact conditions. Results show that there is a significant transition in the deformation mode as changes of the projectile form are applied. Moreover, the cracks on the back of the 2618 aluminum alloy plates impacted by the solid plate projectile and the hollow blade projectile tend to locate at different positions, which are supposed to be influenced by local bending and stretching. The work in this paper may provide guidance for the design of fan blade containment systems.
出处 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2019年第6期1428-1441,共14页 中国航空学报(英文版)
基金 financial support from the National Natural Science Foundation of China (No. 11772268, 11522220, 11627901 and 11527803)
关键词 2618 aluminum plate Damage CHARACTERISTIC HIGH-VELOCITY impact Johnson-Cook(J-C) PROJECTILE FORMS 2618 aluminum plate Damage characteristic High-velocity impact Johnson-Cook(J-C) Projectile forms
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