摘要
对40Cr钢制自增强厚壁容器,在循环内压作用下的残余应力松弛进行了试验研究。通过试验,分析了自增强厚壁筒外壁残余应变与循环内压循环次数的变化关系。研究结果表明,厚壁筒自增强残余应力在循环载荷的作用下,残余应力衰减达到近30%。
The relaxation of residual stress of autofrettaged thick-walled vessel made by 40 Cr steel was studied under repeated pressure. Through experiment, the relationships between the residual strain change of autofrettaged thick-walled cylinder’s inner and outer wall with the number of cycles of repeated pressure were analyzed. The result showed that the attenuation of residual stress of autofrettaged thick-walled cylinder reached about 30% under cycle loading.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2005年第3期108-109,共2页
Journal of Northeast Forestry University
基金
黑龙江省教育厅科技项目(项目编号: 10541002)
关键词
自增强
厚壁容器
残余应力
松弛
试验
循环压力
Autofrettage
Thick-walled vessel
Residual stress
Relaxation
Experiment
Repeated pressure