工程设计学报2025，Vol.32Issue(2)：272-280,9.
基于NSGA-Ⅱ和TOPSIS法的横波可控震源振动器平板疲劳寿命优化
Fatigue life optimization of sheer wave vibroseis vibrator baseplate based on NSGA-Ⅱ and TOPSIS method
摘要
Abstract
The sheer wave vibroseis vibrator baseplate is a key component in shale gas exploration,and its fatigue life directly affects the service life of vibroseis and the exploration accuracy.However,traditional optimization methods for vibrator baseplate fatigue life ignore the welding residual stress between the baseplate and the baseplate teeth,resulting in poor performance in anti-fatigue optimization design for the baseplate structure.Therefore,the local sensitivity method was used to conduct a sensitivity analysis for the fatigue life of the baseplate,and the welding residual stress was determined as the key factor affecting the fatigue life.Subsequently,mathematical models between the maximum welding residual stresses in all directions of the baseplate and the welding speed and interlayer temperature were established.Meanwhile,with the maximum welding residual stresses in all directions as the constraints and the fatigue life as the optimization target,the corresponding optimization model was constructed.Finally,the NSGA-Ⅱ(non-dominated sorting genetic algorithm-Ⅱ)was used to obtain the Pareto solution set,and the best optimization scheme was determined by combining the entropy weight method and the TOPSIS(technique for order preference by similarity to ideal solution):the welding speed was 10.23 mm/s and the welding interlayer temperature was 105℃.The results showed that the fatigue life of the optimized baseplate was 10.23 years,which was 17.72%higher than that before optimization.The research results can provide scientific and effective theoretical methods and engineering guidance for the fatigue life optimization of the sheer wave vibroseis vibrator baseplate.关键词
横波可控震源/振动器平板/疲劳寿命/焊接残余应力/NSGA-Ⅱ/TOPSIS法Key words
sheer wave vibroseis/vibrator baseplate/fatigue life/welding residual stress/NSGA-Ⅱ/TOPSIS method分类
机械制造引用本文复制引用
陈振,冉庆杰,英晓洋,陈能鹏,魏超成,王乔木..基于NSGA-Ⅱ和TOPSIS法的横波可控震源振动器平板疲劳寿命优化[J].工程设计学报,2025,32(2):272-280,9.基金项目
页岩气评价与开采四川省重点实验室资助项目(YSK2022013) （YSK2022013）
四川省科技厅自然科学基金面上项目(2024NSFSC0094) （2024NSFSC0094）
