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传统的力学实验已无法满足研究生创新性实验教学的需要。为了使研究生在科学研究中掌握实验分析的基本方法和技能,本文基于Hopkinson压杆加载技术建立了一套高速切削实验系统。该实验系统作为一个科研平台,能够实现切削过程的瞬态冻结并完成变形场和切削力的实时测量,可为高速切削机理研究提供基础实验数据。同时,该实验系统也是一个综合性的实验平台。基于该平台,可以完成金相分析、光栅光纤测力、变形场测量以及塑性本构分析等力学实验教学。高速切削实验平台将力学实验与科学研究相结合,有利于培养研究生独立分析与研究的能力,为研究生未来的科研工作打下基础。
The traditional mechanics experiment can not meet the needs of innovative experimental teaching. In order to enable graduate students to master the basic methods and skills of experimental analysis in scientific research, this paper established a set of high-speed cutting experimental system based on Hopkinson bar loading technology. As a research platform, the experimental system can realize transient freezing in the cutting process and complete real-time measurement of deformation field and cutting force, which can provide basic experimental data for high-speed cutting mechanism research. At the same time, the experimental system is also a comprehensive experimental platform. Based on this platform, mechanics experiment teaching such as metallographic analysis, grating optical fiber force measurement, deformation field measurement and plastic constitutive analysis can be completed. The experimental platform of high-speed cutting combines mechanics experiment and scientific research, which helps to cultivate the independent analysis and research ability of postgraduates and lays the foundation for the future research work of graduate students.