基于断裂力学理论和GerberichChen 公式，建立高强螺栓腐蚀断裂裂纹估算模型和疲劳寿命估算模型，定量分析高强螺栓在腐蚀环境中断裂的裂纹深度和腐蚀疲劳寿命.研究发现，高强螺栓腐蚀断裂最大裂纹深度随着材料屈服强度和使用应力增加而减小，其中以材料屈服强度对最大裂纹深度的影响为主.高强螺栓腐蚀疲劳寿命随着材料强度、使用应力和应力幅的增大而减小，其中应力幅的影响最大，材料屈服强度的影响最小.
Abstract
Based on the fracture mechanics theory and the GerberichChen formula, the highstrength bolt corrosion fracture crack estimate model and the fatigue life estimate model were established. The highstrength bolt crack depth and the fatigue life under corrosion environment could be quantitatively analyzed. Results show that the highstrength bolt corrosion fracture biggest crack depth reduces along with the material yield strength and the use stress increasing. The material yield strength is the major factor. And the highstrength bolt corrodes fatigue life reduces along with the material strength, the use stress and stress amplitude increasing. The stress amplitude influences most, and the material yield strength influences least.
关键词
高强螺栓 /
腐蚀 /
断裂 /
疲劳寿命 /
估算模型
Key words
high strength bolt /
corrosion /
fracture /
fatigue life /
estimate model
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
［1］ 李瀛沧. 九江长江大桥正桥钢梁设计简介［J］. 桥梁建设, 1993（1）:77-81.
LI Ying-cang. Jiujiang Yangtze River bridge girder design introduction［J］. Bridge Construction，1993（1）:77-81.(in Chinese)
［2］ 史淑艳. 朝天门大桥钻孔精度控制［J］. 钢结构, 2008, 23(8):67-69.
SHI Shuyan. The accuracy control of drill hole of Chaotianmen bridge［J］. Steel Construction, 2008, 23(8):67-69. （in Chinese）
［3］姜忠良, 王天宰. 高强度螺栓应力腐蚀开裂的断裂力学分析［J］. 工业建筑， 1982（7）: 42-48.
JIANG Zhong liang, WANG Tian-zai. Stress corrosion cracking of highstrength bolts fracture mechanics analysis［J］. Industrial Construction， 1982（7）:42-48.（in Chinese）
［4］ LIAO R D, SUN Y J, LIU J X, et al. Applicability of damage models for failure analysis of threaded bolts［J］. Engineering Fracture Mechanics, 2011, 78(3):514-524.
［5］ 张海峰 王春芬. 高强度螺栓断裂原因分析［J］. 热加工工艺，2007, 36(20):85-87.
ZHANG Hai-feng，WANG Chun-fen. Analysis of failure reason of high strength bolt［J］. Hot Working Technology,2007, 36(20):85-87.(in Chinese)
［6］ YAMAMOTO A. Investigations on the self loosening of threaded fasteners under transverse vibration［J］. Journal of the Japan Society of Precision Engineering,1977, 43(508):470-475.
［7］ 杨兴林, 张俊苗, 陈宇光. 高强螺栓应力腐蚀断裂过程的建模与仿真［J］. 南京航空航天大学学报, 2009, 41(1): 130-133.
YANG Xinglin, ZHANG Junmiao, CHEN Yuguang. Modeling and simulating of stress corrosion cracking in high strength bolt［J］.Journal of Nanjing University of Aeronautics & Astronautics, 2009, 41(1): 130-133.(in Chinese)
［8］ 盖伟涛. 交变应力和腐蚀交互作用下钻柱失效机理研究［D］. 大庆: 大庆石油学院, 2006.
GAI Wei-tao. A research on failure mechanism of drilling string in interaction of stresses and corrosion［D］.Daqing: Daqing Petroleum University, 2006.(in Chinese)
［9］ 张晓敏. 断裂力学［M］. 北京: 清华大学出版社, 2012.
［10］ 刘淑珍, 董春灵. 高强度螺栓在大气中的应力腐蚀开裂［J］. 西南交通大学学报,1990(3):61-68.
LIU Shu-zhen, DONG Chun-ling. High strength bolts in the atmosphere of stress corrosion cracking［J］.Journal of Southwest Jiaotong University, 1990(3):61-68.(in Chinese)
［11］ CHAKHERLOU T N, ABAZADEH B. Estimation of fatigue life for plates including pre-treated fastener holes using different multiaxial fatigue criteria［J］. International Journal of Fatigue, 2011, 33(3):343-353.
［12］ 王天宰, 吕永华. 高强度螺栓表面微裂纹对延迟断裂及疲劳断裂的影响［J］. 机械工程材料,1989(2):59-62.
WANG Tian-zai, LV Yong-hua. Influenees of surjace cracke on the stress corrosion craeing and fatigue fraeture of high streess bolts［J］.Materials for Mechanical Engineering, 1989(2):59-62.(in Chinese)
［13］ FISHER J W. Fatigue and fracture in steel bridges : case studies ［M］. New York: Wiley, 1984.
[14］ 徐俊. 铁路钢桥疲劳寿命评估方法研究［D］. 成都: 西南交通大学, 2003.
XU Jun. Research of fatigue life valuat1on for ra1lway steel bridge［D］.Chengdu:Southwest Jiaotong University,2003.(in Chinese)
基金
工业装备结构分析国家重点实验室自主研究课题(S13209); 华南理工大学亚热带建筑科学国家重点实验室开放研究课题(2014KB11) ; 辽宁省教育厅科学研究项目.
PDF(463 KB)
