转向架焊接构架名义应力容许疲劳强度数据构建研究
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摘要
针对DIN 15018、DVS 1612和IIW-1823-07提供的名义应力容许疲劳强度数据,对其在缺口等级划分、平均应力修正、极限容许应力确定及母材强度等级影响等方面的差异进行系统对比。分析表明,DVS 1612对缺口等级的细分程度高,与现行焊接标准的关联性强,采用的平均应力修正方法保守简洁,对极限容许应力的规定合理。为此,基于DVS 1612的缺口等级划分,根据Q345钢的机械性能确定极限容许应力,同时参考IIW-1823-07中S-N曲线的相关参数,构建出适用于Q345钢母材及焊接接头的Haigh图和S-N曲线,可分别用于我国焊接构架的耐久极限法和累积损伤法疲劳分析评定。
The nominal stress permissible fatigue strength data provided by DIN 15018, DVS 1612 and IIW-1823-07 were compared in aspect of notch categories, mean stress modification, limit permissible stress determination and effect of parent metal strength class. The analysis shows that the DVS 1612 standard provides high detailed notch categories and tight correlation with the current welding standard. The mean stress modification is conservative and concise and the determination of limit permissible stress is reasonable. Thus based on the notch categories specified in the DVS 1612 standard, the limit permissible stress was determined considering the mechanical properties of Q345 steel. Meanwhile, referring to relevant parameters of S-N curves in IIW-1823-07 standard, the reasonable Haigh fatigue diagrams and S-N curves for parent metal and welded joints made of Q345 steel were established. These data can be applied to the fatigue assessment of welded frame using endurance limit approach and cumulative damage approach respectively.
The nominal stress permissible fatigue strength data provided by DIN 15018, DVS 1612 and IIW-1823-07 were compared in aspect of notch categories, mean stress modification, limit permissible stress determination and effect of parent metal strength class. The analysis shows that the DVS 1612 standard provides high detailed notch categories and tight correlation with the current welding standard. The mean stress modification is conservative and concise and the determination of limit permissible stress is reasonable. Thus based on the notch categories specified in the DVS 1612 standard, the limit permissible stress was determined considering the mechanical properties of Q345 steel. Meanwhile, referring to relevant parameters of S-N curves in IIW-1823-07 standard, the reasonable Haigh fatigue diagrams and S-N curves for parent metal and welded joints made of Q345 steel were established. These data can be applied to the fatigue assessment of welded frame using endurance limit approach and cumulative damage approach respectively.
引文
[1] DIN.DIN 15018 Crane-steel Structures Verification and Analyses[S].Berlin:Beuth Verlag,1984.
[2] DVS.DVS 1612 Design and Endurance Strength Evaluation for Welded Steel Joints in Railway Vehicle Construction[S].Düsseldorf:DVS Verlag,2009.
[3] HOBBACHER A.IIW-1823-07 Recommendations for Fatigue Design of Welded Joints and Components[M].Paris:International Institute of Welding,2008.
[4] BSI.BS 7608-1993 Code of Practice for Fatigue Design and Assessment of Steel Structures[S].London:British Standards Institution,1995.
[5] HOBBACHER A.Recommendations for Fatigue Design of Welded Components[M].Cambridge:Abington Publishing,1996.
[6] 王悦东,崔瑞杰,杨鑫华.基于IIW标准的轨道车辆焊接结构疲劳预测系统的设计与实现[J].大连交通大学学报,2011,32(2):16-18.WANG Yuedong,CUI Ruijie,YANG Xinhua.Design and Implementation of IIW Based Fatigue Prediction System for Railway Vehicle Welded Structures[J].Journal of Dalian Jiaotong University,2011,32(2):16-18.
[7] 孟金凤,陆正刚,章焕章.基于FKM标准的转向架构架疲劳损伤研究[J].机车电传动,2011(1):28-31.MENG Jinfeng,LU Zhenggang,ZHANG Huanzhang.The Fatigue Damage Research of Bogie Frame Based on the FKM-guideline[J].Electric Drive for Locomotive,2011(1):28-31.
[8] 张乐乐,李培,崔进.基于整体-局部方法的焊接构架承载能力的分析[J].铁道学报,2011,33(8):33-38.ZHANG Lele,LI Pei,CUI Jin.Analysis on Load-carrying Capacity of Welded Bogie Frame Based on Global-local Method[J].Journal of the China Railway Society,2011,33(8):33-38.
[9] 刘旭,张开林,姚远,等.缺口应力法在机车焊接构架疲劳分析中的应用[J].铁道学报,2015,37(1):24-29.LIU Xu,ZHANG Kailin,YAO Yuan,et al.Application of Notch Stress Method in Fatigue Analysis of Locomotive Welded Frame[J].Journal of the China Railway Society,2015,37(1):24-29.
[10] 周张义.高速货车转向架焊接部件疲劳强度研究[D].成都:西南交通大学,2009:45-57.
[11] 周张义,李芾,黄运华,等.动载系数对160km/h货车转向架焊接件疲劳损伤的影响[J].西南交通大学学报,2010,45(4):544-548.ZHOU Zhangyi,LI Fu,HUANG Yunhua,et al.Effect of Dynamic Load Coefficients on Fatigue Damage of Welded Components for 160 km/h Wagon Bogie[J].Journal of Southwest Jiaotong University,2010,45(4):544-548.
[12] 肖守讷,杨超,阳光武.一种新的焊接构架疲劳分析方法[J].西南交通大学学报,2013,48(2):199-204.XIAO Shoune,YANG Chao,YANG Guangwu.A Novel Fatigue Analysis Method of Welded Frames[J].Journal of Southwest Jiaotong University,2013,48(2):199-204.
[13] 范文学,陈芙蓉,解瑞军,等.基于不同S-N曲线的横向十字焊接接头疲劳寿命预测[J].焊接学报,2013,34(11):69-72.FAN Wenxue,CHEN Furong,XIE Ruijun,et al.Fatigue Life Prediction of Transverse Cross Welded Joint Based on Different S-N Curve[J].Transactions of the China Welding Institution,2013,34(11):69-72.
[14] ERRI.B12/RP17 Programme of Tests to be Carried Out on Wagons with Steel Under-frame and Body Structure and Their Cast Steel Frame Bogies[R].Utrecht:UIC Report,1997.
[15] ERRI.B12/RP60 Texts to Demonstrate the Strength of Railway Vehicles-Regulation for proof tests and Maximum Permissible Stresses[R].Utrecht:UIC Report,2001.
[2] DVS.DVS 1612 Design and Endurance Strength Evaluation for Welded Steel Joints in Railway Vehicle Construction[S].Düsseldorf:DVS Verlag,2009.
[3] HOBBACHER A.IIW-1823-07 Recommendations for Fatigue Design of Welded Joints and Components[M].Paris:International Institute of Welding,2008.
[4] BSI.BS 7608-1993 Code of Practice for Fatigue Design and Assessment of Steel Structures[S].London:British Standards Institution,1995.
[5] HOBBACHER A.Recommendations for Fatigue Design of Welded Components[M].Cambridge:Abington Publishing,1996.
[6] 王悦东,崔瑞杰,杨鑫华.基于IIW标准的轨道车辆焊接结构疲劳预测系统的设计与实现[J].大连交通大学学报,2011,32(2):16-18.WANG Yuedong,CUI Ruijie,YANG Xinhua.Design and Implementation of IIW Based Fatigue Prediction System for Railway Vehicle Welded Structures[J].Journal of Dalian Jiaotong University,2011,32(2):16-18.
[7] 孟金凤,陆正刚,章焕章.基于FKM标准的转向架构架疲劳损伤研究[J].机车电传动,2011(1):28-31.MENG Jinfeng,LU Zhenggang,ZHANG Huanzhang.The Fatigue Damage Research of Bogie Frame Based on the FKM-guideline[J].Electric Drive for Locomotive,2011(1):28-31.
[8] 张乐乐,李培,崔进.基于整体-局部方法的焊接构架承载能力的分析[J].铁道学报,2011,33(8):33-38.ZHANG Lele,LI Pei,CUI Jin.Analysis on Load-carrying Capacity of Welded Bogie Frame Based on Global-local Method[J].Journal of the China Railway Society,2011,33(8):33-38.
[9] 刘旭,张开林,姚远,等.缺口应力法在机车焊接构架疲劳分析中的应用[J].铁道学报,2015,37(1):24-29.LIU Xu,ZHANG Kailin,YAO Yuan,et al.Application of Notch Stress Method in Fatigue Analysis of Locomotive Welded Frame[J].Journal of the China Railway Society,2015,37(1):24-29.
[10] 周张义.高速货车转向架焊接部件疲劳强度研究[D].成都:西南交通大学,2009:45-57.
[11] 周张义,李芾,黄运华,等.动载系数对160km/h货车转向架焊接件疲劳损伤的影响[J].西南交通大学学报,2010,45(4):544-548.ZHOU Zhangyi,LI Fu,HUANG Yunhua,et al.Effect of Dynamic Load Coefficients on Fatigue Damage of Welded Components for 160 km/h Wagon Bogie[J].Journal of Southwest Jiaotong University,2010,45(4):544-548.
[12] 肖守讷,杨超,阳光武.一种新的焊接构架疲劳分析方法[J].西南交通大学学报,2013,48(2):199-204.XIAO Shoune,YANG Chao,YANG Guangwu.A Novel Fatigue Analysis Method of Welded Frames[J].Journal of Southwest Jiaotong University,2013,48(2):199-204.
[13] 范文学,陈芙蓉,解瑞军,等.基于不同S-N曲线的横向十字焊接接头疲劳寿命预测[J].焊接学报,2013,34(11):69-72.FAN Wenxue,CHEN Furong,XIE Ruijun,et al.Fatigue Life Prediction of Transverse Cross Welded Joint Based on Different S-N Curve[J].Transactions of the China Welding Institution,2013,34(11):69-72.
[14] ERRI.B12/RP17 Programme of Tests to be Carried Out on Wagons with Steel Under-frame and Body Structure and Their Cast Steel Frame Bogies[R].Utrecht:UIC Report,1997.
[15] ERRI.B12/RP60 Texts to Demonstrate the Strength of Railway Vehicles-Regulation for proof tests and Maximum Permissible Stresses[R].Utrecht:UIC Report,2001.
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