首页> 外文会议>ASME international mechanical engineering congress and exposition >FULL FIELD MEASUREMENTS OF THE DYNAMIC RESPONSE OF AA6061-T6 ALUMINUM ALLOY UNDER HIGH STRAIN RATE COMPRESSION AND TORSION LOADS
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FULL FIELD MEASUREMENTS OF THE DYNAMIC RESPONSE OF AA6061-T6 ALUMINUM ALLOY UNDER HIGH STRAIN RATE COMPRESSION AND TORSION LOADS

机译:高应变率压缩和扭转载荷下Aa6061-T6铝合金动态响应的全场测量。

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Aluminum alloys exhibit an attractive combination of mechanical and physical properties such as high stiffness and low density, which favors their utilization in many structural applications. Thus, increasing the structural applications of aluminum alloy is the driving force for the need to adequately understand its deformation and failure mechanisms under various types of dynamic loading conditions. In this study, full field plastic deformation of AA6061-T6 aluminum alloy at high strain- rates under compressive and torsion loads are measured using split Hopkinson compression and torsion bars and a high speed digital image correlation system. The stress-strain curves obtained using the high speed digital cameras are compared with results obtained from the elastic waves in the compression and torsion bars. A post deformation analysis of the specimen also shows strain localization along narrow adiabatic shear bands in the AA6061-T6 alloy.
机译:铝合金具有机械和物理特性(如高刚度和低密度)的吸引人的组合,这有利于铝合金在许多结构应用中的利用。因此,增加铝合金的结构应用是在各种类型的动态载荷条件下充分了解其变形和破坏机理的驱动力。在这项研究中,使用分开的Hopkinson压缩和扭力杆以及高速数字图像相关系统,测量了在压缩和扭转载荷下高应变率下AA6061-T6铝合金的全场塑性变形。将使用高速数码相机获得的应力-应变曲线与从压缩杆和扭杆中的弹性波获得的结果进行比较。样品的变形后分析还显示,AA6061-T6合金沿狭窄的绝热剪切带发生应变局部化。

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