摘要
研究了低碳钢在激振频率 0～ 10 0Hz范围内进行振动拉伸的应力应变行为·采用不同的激振力幅和激振频率进行实验 ,记录金属材料产生的变形与所受载荷等数据·结果表明激振频率增大 ,材料的屈服极限σs 和强度极限σb 会明显减小·改变激振频率 ,σs 和σb 也随之改变·在激振频率 1Hz时 ,测得了材料瞬态应力应变曲线 ,表现出明显的滞回特性·以上研究对探讨振动加工机理及其工程应用具有重要意义·
The changing ways of stress and strain of metals, such as low carbon steel, processed with vibration drawing were studied. The vibration frequencies were from 0 to 100?Hz. In the experiment, different vibration amplitudes and frequencies are applied on metals. The deformations of metal with its load were recorded. The yielding stresses and strength stresses decreases when loading force amplitudes increase. They are also influenced by the exciting frequencies. The typical instantaneous stress and strain values of metals were measured at exciting frequency 1?Hz. The dynamical verves show that there exists hysterics. These results are useful for both understanding metal's mechanism under lower vibration and the industrial processing applications.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2002年第2期170-172,共3页
Journal of Northeastern University(Natural Science)
基金
教育部博士学科点专项科研基金资助项目 (2 0 0 0 0 14 5 13
辽宁省科学技术基金资助项目 (9710 3 7
国家自然科学基金资助项目 (5 0 0 75 0 15 )
关键词
金属材料
振动拉伸
应力应变关系
激振力幅
激振频率
低频振动
滞回特性
振动加工
减幅效应
实验研究
低碳钢
metal material
vibration drawing
relationship of stress and strain
vibration force amplitude
vibration frequency
lower frequency vibration
hysterics
amplitude reducing efficiency
