网站首页期刊简介编委会过刊目录投稿指南广告合作征订与发行联系我们English
圆角滚压对螺栓残余应力分布及疲劳寿命的影响
英文标题:Influence of fillet rolling on residual stress distribution and fatigue life for bolts
作者:袁武华1  邓建伟1  申庆援2  孙 凯2  皇万宇2 
单位:1. 湖南大学 2. 东方蓝天钛金科技有限公司 制造部 
关键词:螺栓  圆角滚压  残余应力  疲劳寿命  滚压深度  滚轮圆角半径 
分类号:TG379
出版年,卷(期):页码:2023,48(1):108-114
摘要:

 利用ABAQUS 结合Fe-safe 建立了TC4 钛合金高锁螺栓的圆角滚压和拉拉疲劳有限元模型, 并进行了试验验证。分析了滚压深度、滚轮圆角半径对螺栓残余应力分布和疲劳寿命的影响规律。滚压后, 螺栓的疲劳寿命由3 万次提高至20 万次以上; 随着滚压深度的增加, 螺栓圆角的最大压应力和压应力深度也随之增加并趋向于稳定, 疲劳寿命出现先增后减的趋势;随着滚轮圆角半径的增加, 滚压后螺栓的压应力区域增大, 表面最大压应力减小, 并在滚轮圆角半径为螺栓圆角半径的90%时趋于稳定, 最佳滚轮圆角半径为螺栓圆角半径的90% ~95%, 尺寸过大或过小均会导致疲劳寿命显著降低。结果表明, 在滚压深度为0. 02 mm、滚轮圆角半径为0. 47 mm 时, 螺栓圆角的疲劳寿命达到最大值。

 By using ABAQUS combined with Fe-safe, a finite element model of fillet rolling and tensile fatigue for TC4 titanium alloy high-lock bolts was established, and the experimental verification was carried out. Then, the influences of rolling depth and roller fillet radius on residual stress distribution and fatigue life of bolts were analyzed. And after rolling, the fatigue life of bolt increased from 30000 times to more than 200000 times. Furthermore, with the increasing of rolling depth, the maximum compressive stress and compressive stress depth of bolt fillet also increased and tended to be stable, and the fatigue life first increased and then tended to decrease. With the increasing of roller fillet radius, the compressive stress area of bolt after rolling increased, and the maximum compressive stress on the surface decreased and tended to be stable when the roller fillet radius was 90% of the bolt fillet radius. Thus, the optimal roller fillet radius was 90%-95% of the bolt fillet radius, excessive size or too small size significantly reduced the fatigue life. The results show that the fatigue life of bolt fillet reaches the maximum when the rolling depth is 0. 02 mm and the roller fillet radius is 0. 47 mm.

基金项目:
作者简介:
作者简介: 袁武华(1973-), 男, 博士, 教授 E-mail: yuan46302@ 163. com
参考文献:

 [1]  周康年, 丁为联, 李壮云, 等. 中国机械设计大典[M]. 北京: 中国机械工程学会, 2002.


Zhou K N, Ding W L, Li Z Y, et al. China Mechanical Design Ceremony [M]. Beijing: Chinese Mechanical Engineering Society,2002.

[2]  刘风雷. 滚压加工技术提高高强航空紧固件的疲劳强度[J].航空制造技术, 2005, (6): 97-99.

Liu F L. Rolling processing technology to improve fatigue strength of high-strength aerospace fasteners [J]. Aviation Manufacturing Technology, 2005, (6): 97-99.

[3]  王慧, 刘海波, 朱先华, 等. 紧固件的典型失效形式[J].上海金属, 2020, 42 (6): 20-26.

Wang H, Liu H B, Zhu X H, et al. Typical failure modes of fasteners [J]. Shanghai Metal, 2020, 42 (6): 20-26.

[4]  宗学文, 张健, 卢秉恒. Ti6Al4V 在不同成形工艺下的数值分析及组织性能[J]. 稀有金属, 2021, 45 (7): 786-795.

Zong X W, Zhang J, Lu B H. Numerical analysis and microstructure and properties of Ti6Al4V under different forming processes [J]. Chinese Journal of Rare Metals, 2021, 45 (7): 786-795.

[5]  李毅, 赵永庆, 曾卫东. 航空钛合金的应用及发展趋势[J]. 材料导报, 2020, 34 (S1): 280-282.

Li Y, Zhao Y Q, Zeng W D. Application and development trend of aerospace titanium alloys [ J ]. Materials Review, 2020, 34(S1): 280-282.

[6]  师俊峰, 韩珍梅. 航空紧固件钛合金材料的应用现状[J].机械管理开发, 2020, 35 (5): 258-259.

Shi J F, Han Z M. Application status of titanium alloy materials for aviation fasteners [ J]. Mechanical Management Development, 2020, 35 (5): 258-259.

[7]  蔡振, 张显程, 涂善东. 超声表面滚压加工对Ti-6Al-4V 合金显微组织及表面完整性的影响[J]. 机械工程材料, 2018, 42 (1): 7-10, 17.

Cai Z, Zhang X C, Tu S D. Effect of ultrasonic surface rolling on the microstructure and surface integrity of Ti-6Al-4V alloy [J].Mechanical Engineering Materials, 2018, 42 (1): 7-10, 17.

[8]  钟丽琼. 表面形变强化残余应力场对Inconel 718 高温合金高周疲劳性能的影响规律研究[D]. 贵阳: 贵州大学, 2019.

Zhong L Q. Study on the Influence of Surface Deformation Strengthening Residual Stress Field on High Cycle Fatigue Properties of Inconel 718 Superalloy [D]. Guiyang: Guizhou University, 2019.

[9]  赵庆云, 程思锐, 黄宏. 1240 MPa 级Ti-38644 高锁螺栓的拉伸疲劳增寿机理[ J]. 材料研究学报, 2019, 33 (10):735-741.

Zhao Q Y, Cheng S R, Huang H. Tensile fatigue life extension mechanism of 1240 MPa Ti-38644 high-lock bolts [J]. Journal of Materials Research, 2019, 33 (10): 735-741.

[10] 吕永华, 王天宰. 滚压强化对高强螺栓用35CrMoV 钢疲劳性能的影响[J]. 机械工程材料, 1989, (3): 50-55.

Lyu Y H, Wang T Z. Effect of rolling strengthening on fatigue properties of 35CrMoV steel for high-strength bolts [J]. Mechanical Engineering Materials, 1989, (3): 50-55.

[11] 王勉. TC16 螺栓头下圆角滚压工艺与疲劳强度研究[D]. 贵阳: 贵州大学, 2009.

Wang M. Research on the Rolling Process and Fatigue Strength of the Fillet under the TC16 Bolt Head [D]. Guiyang: Guizhou University, 2009.

[12] 胡宁静, 胡蓉蓉, 胡道秋. 滚压工艺国内外的发展动向[J].湘潭大学自然科学学报, 1994, (2): 98-103.

Hu N J, Hu R R, Hu D Q. The development trend of rolling technology at home and abroad [ J]. Journal of Natural Science of Xiangtan University, 1994, (2): 98-103.

[13] NASM 1312-11-1997, Fastener test methods-Method 11-Tension fatigue [S].

 

服务与反馈:
本网站尚未开通全文下载服务】【加入收藏
《锻压技术》编辑部版权所有

中国机械工业联合会主管 北京机电研究所有限公司 中国机械工程学会塑性工程分会主办
联系地址:北京市海淀区学清路18号 邮编:100083
电话:+86-010-82415085 传真:+86-010-62920652
E-mail: fst@263.net(稿件) dyjsjournal@163.com(广告)
京ICP备07007000号-9