用Hopkinson杆技术研究材料动态断裂韧性的进展  

Progress in the research of dynamic fracture toughness based on Hopkinson bar technique

作　　者：崔新忠[1] 范亚夫[1] 纪伟[1] 陈捷[1] 

机构地区：[1]中国兵器科学研究院宁波分院,山东烟台264003

出　　处：《兵器材料科学与工程》2010年第2期118-122,共5页Ordnance Material Science and Engineering

摘　　要：综述应用Hopkinson杆技术进行材料动态断裂韧性研究的实验方法。介绍入射波整形技术和力传感器技术在动态断裂韧性实验中的应用。简要总结动态应力强度因子的计算方法和裂纹起裂时间的确定方法。展望动态断裂韧性研究的发展趋势。The experimental techniques of dynamic fracture toughness based on Hopkinson bar technique were summarized.Some new improvements on the technique such as pulse shaping technique and force transducer were introduced.The methods of calculating dynamic stress intensity factor and determining crack-initiation time were generalized briefly.The viewpoint of future development of dynamic fracture toughness was proposed.

关 键 词：动态断裂韧性 Hopkinson杆技术 综述 动态应力强度因子 加载率 

分 类 号：O346.1[理学—固体力学] O347.1[理学—力学]