首页|SHPB循环冲击实验技术在岩石冲击动力学教学中的应用研究

SHPB循环冲击实验技术在岩石冲击动力学教学中的应用研究

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
该文通过将SHPB实验与岩石冲击动力学相关理论课程相结合的教学模式,提高学生对岩石冲击力学响应和能量演化特征的认知与理解,培养学生在科学实验方面的实际操作能力和严谨态度,发挥学生自主开展实验研究的主观能动性,提升教学效果.基于多学科交叉融合理念,联系科学研究热点问题,引导学生进一步思考并探索更多"SHPB+",有助于培养学生的科研实践能力与思维创新精神.
Study on the application of SHPB cyclic impact experimental technology in the teaching of rock impact dynamics
[Objective]Cultivating innovative talents with autonomous learning abilities is the core task of higher education and a major strategic measure in establishing a learning society and an innovative country.The high-quality development of courses related to rock impact dynamics in colleges and universities is crucial to educating high-quality scientific research talents in mining,safety,and blasting engineering.This approach plays a key role in the swift development of rock mechanics engineering and the safe,efficient development and construction of deep resources in China.[Methods]Splitting Hopkinson pressure bar(SHPB)is a dynamic experimental system with convenient operation,wide application,and high reliability for examining the dynamic mechanical response and energy evolution properties of rock materials under medium and high strain rates.The application of SHPB experimental technology to the practical teaching of theoretical courses associated with rock impact dynamics is one of the crucial measures to foster students'practical ability in scientific research and innovative thinking.SHPB experimental technology is innovatively applied to the practical teaching of courses related to rock impact dynamics,and the experimental course content of SHPB cyclic impact compression for tuff is designed.The major experimental teaching contents include the introduction of a typical SHPB stress three-wave graph,stress balance analysis,stress-strain curve analysis,strain rate time-history curve analysis,damage and fracture behavior analysis,energy evolution analysis,and fracture mesomorphology analysis.The pioneering fusion of OM and SEM testing technology with rock impact dynamics experimental technology reveals the damage mechanism of rock materials under the SHPB cyclic impact test to students from the micro level and enhances the students'comprehension of rock mesodamage and rock macro failure.The combination"independent autonomous learning+teachers'professional guidance"is proposed to guide students to describe their views and understanding,master the correct method of experimental analysis,and develop a framework of knowledge application that can view the essence through phenomena and promote the scientific research ability to combine theory with practice.[Results]By adopting the teaching mode of integrating the SHPB experiment with relevant theoretical courses in rock impact dynamics,students'learning interest and scientific research enthusiasm in the field of rock impact dynamics are improved,the students'cognition and understanding of the response of rock impact mechanics and the characteristics of energy evolution are strengthened,the practical operation ability and rigorous attitude of students in scientific experiments are fostered,the subjective initiative of students to conduct experimental research independently is developed to the fullest,and the poor teaching effect of theoretical knowledge indoctrination is addressed.[Conclusions]This paper establishes the idea of the cross-integration of multiple disciplines,integrating with popular issues in scientific research and guiding students to reflect on and explore"SHPB+"further.On the basis of remarkably enhancing the teaching outcome and achieving the teaching objective of rock impact dynamics,cultivating students'practical ability of scientific research and innovative spirit of thinking is crucial.

impact dynamicssplitting Hopkinson pressure bar(SHPB)cyclic impact compression of rockSHPB+experimental teaching

杨荣周、徐颖

展开 >

安徽理工大学 土木建筑学院,安徽 淮南 232001

冲击动力学 分离式霍普金森压杆(SHPB) 岩石循环冲击压缩 SHPB+ 实验教学

安徽理工大学校级教育教学改革研究项目安徽省质量工程土木工程专业改造提升项目安徽省高等学校自然科学研究重点项目安徽理工大学高层次引进人才科研启动基金国家自然科学基金国家自然科学基金安徽省大学生创新创业训练计划

2023xjjy122022zygzts0262023AH0511672022yjrc845207400952274071S202310361228

2024

10.16791/j.cnki.sjg.2024.05.027

实验技术与管理
清华大学

实验技术与管理

CSTPCD北大核心
影响因子：1.651
ISSN：1002-4956
年,卷(期)：2024.41(5)