The stress distributions under load or unload as well as under fatigue tension with or without split-sleeve were studied, so as to reveal the advantage of coldworking with split-sleeve.

• 研究了带衬套挤压件在加载、御载及疲劳拉伸载荷状态下的应力分布，并和无衬套挤压时的状态进行比较，从机理上揭示了带衬套挤压在改善试件抗疲劳性能方面的优势所在。