Residual life estimation of components of hydraulic support in service
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摘要: 针对现有液压支架寿命估算方法很少考虑液压支架使用过程中技术性能不断下降而导致误差较大的问题，提出了在役液压支架部件剩余寿命估算方法。通过引入表面系数、结构尺寸系数和焊缝影响系数等来修正材料疲劳曲线，获得部件疲劳曲线；再根据累积损伤理论、剩余损伤容量和应力谱，利用部件的疲劳曲线进行寿命估算；采用多级模糊评定方法对在役液压支架顶梁进行状态评估，使用总体状态系数对寿命估算结果进行折合计算，获得在役液压支架部件的剩余寿命。试验结果表明，该方法的估算误差为3.52%，精度较高。Abstract: In view of problem that existing hydraulic support life estimation method rarely consider continuous performance decline of hydraulic support in use process and leads to great error, a residual life estimation method of components of hydraulic support in service was proposed. Components S -N curve was obtained by correcting material S -N curve through introduction of surface coefficient, structural size coefficient and welding impact coefficient. Then the components S -N curve was used for life estimation according to cumulative damage theory, residual damage capacity and stress spectrum. Multi-level fuzzy evaluation method was used to evaluate the state of hydraulic support roof beam, and overall life coefficient was multiplied by the estimated life to get the residual life of the components of hydraulic support in service. The experimental results show that the estimation error of the proposed method is 3.52% and the precision is high.
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Keywords:
- hydraulic support /
- life estimation /
- residual life /
- S -N curve /
- state assessment
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期刊类型引用(5)
1. 张志勇，张猛，陆金桂. 基于改进BP神经网络的液压支架前连杆疲劳寿命预测. 煤矿机械. 2023(02): 177-179 . 
百度学术
2. 肖坤宇，徐彤，苏成明，张鹏，马飞. 液压支架关键部件失效分析与寿命评估研究进展. 中国表面工程. 2022(01): 97-106 . 百度学术
3. 张帆，田睿芳，张崇进，王世雄，李昊. 基于DT-LSTM的矿山液压支架顶梁疲劳寿命预测. 矿业研究与开发. 2022(10): 192-200 . 百度学术
4. 李世科. 基于LM-BP神经网络的液压支架顶梁疲劳寿命预测及应用. 中国矿业. 2019(05): 92-96 . 百度学术
5. 王雷，陆金桂，陈涌. 液压支架顶梁可靠度近似计算方法. 工矿自动化. 2018(07): 88-91 . 本站查看
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