疲劳强化和损伤过程中材料的剩余静强度研究

中国机械工程 ›› 2013, Vol. 24 ›› Issue (08): 1117-1121.

疲劳强化和损伤过程中材料的剩余静强度研究

卢曦;焦玉强

上海理工大学,上海,200093

出版日期:2013-04-25 发布日期:2013-05-08
基金资助:
国家自然科学基金资助项目(51175346);上海市科委基础研究重点项目（12JC1407000);上海市教育委员会科研创新项目(11YZ114);上海汽车工业科技发展基金会资助项目（1210）
National Natural Science Foundation of China（No. 51175346）

Investigation on Residual Strength of Fatigue Strengthening and Damaging

Lu Xi;Jiao Yuqiang

University of Shanghai for Science and Technology,Shanghai,200093

Online:2013-04-25 Published:2013-05-08
Supported by:

National Natural Science Foundation of China（No. 51175346）

摘要/Abstract

摘要：

以某汽车传动轴的标准材料试样为对象,试验研究了强化和损伤过程中试样的剩余静强度的变化特征。试验结果表明:试样的剩余静强度随着疲劳强度的强化而增大,随着材料损伤程度的增大而减小;剩余静强度的变化趋势与疲劳强度的变化趋势基本一致;在最佳强化载荷和最佳强化次数下,剩余静强度变化的稳定性和规律性强，偏离最佳强化次数时，剩余静强度变化的规律性较差。

关键词: 剩余静强度, 强化, 损伤, 疲劳试验

Abstract:

Using standard material specimen of vehicle constant velocity joint, the residual static strength during strengthening and damaging process was investigated. The results show that the residual static strength of material is increased with fatigue strengthening and decreased with fatigue damaging. The change trend of residual static strength is similar to that of the fatigue strength during strengthening and damaging process. However, there are more obvious change characteristics to the residual static strength under the optimal strengthening cycles and load, such as the stability, regularity and accuracy.

Key words: residual static strength, strengthening, damaging, fatigue experiment

中图分类号:

TH114
U463.3

卢曦, 焦玉强. 疲劳强化和损伤过程中材料的剩余静强度研究[J]. 中国机械工程, 2013, 24(08): 1117-1121.

LEI Xi, JIAO Yu-Jiang. Investigation on Residual Strength of Fatigue Strengthening and Damaging[J]. China Mechanical Engineering, 2013, 24(08): 1117-1121.

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