动态压缩下典型结构金属热力耦合特性研究  

Study on Thermo-mechanical Coupling Characteristic of Metal with Typical Structure under Dynamic Compression

作　　者：王潭 周刚毅[1,2] Wang Tan;Zhou Gangyi

机构地区：[1]宁波大学冲击与安全工程教育部重点实验室,浙江宁波315211 [2]宁波大学机械工程与力学学院,浙江宁波315211

出　　处：《机械制造》2024年第10期56-59,64,共5页Machinery

摘　　要：使用高速红外热像仪测量金属材料动态压缩变形过程中的温度变化,对动态压缩下典型结构金属热力耦合特性进行研究。通过试验数据,进行热力耦合特性分析,并进行功热转化因数的计算。研究结果表明,采用所提出的试验方法,可以准确测量得到动态压缩过程中试样的应力状态与温度变化,三种具有代表性的典型晶体结构金属材料受冲击载荷而导致的温升均随应变的增大而增大,应变率的影响则极小。在相同应变及应变率条件下,纯铁的储能效果最好。The high-speed infrared imaging camera was used to measure the temperature change of metal material during dynamic compression deformation,and the thermo-mechanical coupling characteristic of typical structure under dynamic compression was studied.Based on the experimental data,the thermo-mechanical coupling characteristic was analyzed,and the work-heat conversion factor was calculated.The result shows that the stress state and temperature changes of the specimen during dynamic compression can be accurately measured by the proposed test method,and the temperature rise caused by the impact load of the three types of representative metal materials with typical crystalline structure increases with the increase of strain,and the influence of strain rate is very small.Under the same strain and strain rate condition,the energy storage effect of pure iron is the best.

关 键 词：动态压缩 金属 热力耦合 研究 

分 类 号：TG113.25[金属学及工艺—物理冶金]