Dynamic indentation experiment based on the split-Hopkinson pressure bar system
Dynamic indentation experiment based on the split-Hopkinson pressure bar system
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发表时间：
2011
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通讯作者：
Li Yu-long
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作者：
Li Yu-long
提出了一种新的材料动态性能测试技术--分离式Hopkinson压杆实验装置，该装置可用于动态压痕实验，获得材料的压痕位移和所受的冲击载荷，为验证该装置的有效性，采用ABAQUS/Explicit FE程序对动态压痕实验进行了数值模拟，对铝合金LY 12进行了动态压痕实验，纯钛和无氧铜的动态力学性能，得到了这三种材料的动态硬度和速率敏感性等动态力学性能，动态压痕实验得到的动态力学性能与其它实验方法得到的动态力学性能一致。
A new technology for testing dynamic properties of materials was proposed by developing an experimental setup based on a split-Hopkinson pressure bar system.The experimental setup can be used in dynamic indentation experiments to obtain the indentation displacements of materials and the impact load suffered by them.To validate the experimental setup,the ABAQUS/Explicit FE code was used to numerically simulate dynamic indentation experiments.Dynamic indentation experiments were conducted on aluminum alloy LY12,pure titanium and oxygen-free copper.The dynamic properties such as dynamic hardness and rate sensitivity were obtained for these three kinds of materials.The dynamic properties obtained by dynamic indentation experiments are consistent with those by other experimental methods.