工程设计学报2025，Vol.32Issue(1)：102-111,10.DOI:10.3785/j.issn.1006-754X.2025.04.145
耦合焊接残余应力的横波可控震源振动器平板疲劳寿命预测
Fatigue life prediction of sheer wave vibroseis vibrator baseplate coupled with welding residual stress
摘要
Abstract
Vibrator baseplate is the key medium for coupling shear wave vibroseis vibrator with earth,while the welding part of baseplate teeth and baseplate is prone to fatigue failure due to complex force under the condition of seismic wave excitation,which leads to low service life of baseplate.In view of the problem that the welding residual stress was not considered in the traditional structure fatigue life analysis method,the stress coupling criterion was established by using the equal strain principle,and the coupling calculation of welding residual stress and working load stress was carried out for the dangerous parts of the baseplate welding seam.Then,based on the modified S-N curve and coupled stress spectrum,the Miner criterion was used to analyze the fatigue life of baseplate under the coupling of welding residual stress and working load stress.The results showed that the fatigue failure life of the baseplate under the coupling of welding residual stress and working load stress was 8.69 a,and the relative error with the actual working life of 8 a was 8.6%.The fatigue life prediction method of vibrator baseplate coupled with welding residual stress has high accuracy and stability,which can provide a new idea and method for the maintenance and optimization of shear wave vibroseis.关键词
横波可控震源/振动器平板/焊接残余应力/工作载荷应力/应力耦合/S—N曲线Key words
sheer wave vibroseis/vibrator baseplate/welding residual stress/working load stress/stress coupling/S-N curve分类
机械工程引用本文复制引用
陈振,陈能鹏,冉庆杰,王乔木,魏超成,鞠浩文..耦合焊接残余应力的横波可控震源振动器平板疲劳寿命预测[J].工程设计学报,2025,32(1):102-111,10.基金项目
四川省科技厅自然科学基金面上项目(2024NSFSC0094) （2024NSFSC0094）
