地震频率对Q235钢结构材料超低周疲劳行为的影响
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摘要
研究了两种地震极限频率对于Q235钢结构材料的超低周疲劳性能的影响。采用横向应变控制方法,分别保持频率1Hz、3Hz恒定,在岛津电液伺服疲劳试验机上开展了试验钢的超低周疲劳试验。研究发现,循环应力响应特征,循环应力-应变关系,以及疲劳寿命均与频率相关,且在较高频率下,试验材料出现了二次循环硬化现象。分别建立了试验钢在两种频率下基于塑性应变幅值及应变速率的疲劳寿命预测公式。两种寿命预测公式均与试验结果吻合良好。通过电镜扫描(SEM),对比分析了不同频率下试验钢超低周疲劳下的微观断裂机理。
In this paper,the effect of two kinds of seismic limit frequencies on the extremely low cycle fatigue(ELCF)performance of Q235 steel structural material are investigated.ELCF experiment for the tested steel was carried out on Shimadzu electro-hydraulic servo fatigue testing machine by using the transverse strain control method and keeping the frequency of 1 Hz and 3 Hz,respectively.It is found that the response characteristics of cyclic stress,the cyclic stress-strain relationship and fatigue life are all related to frequency,and secondary cyclic hardening of tested material occurs at higher frequencies.Based on plastic strain amplitude and strain rate,the fatigue life prediction formulas of tested steel were established respectively,under both frequency condition.The two life prediction formulas are in good agreement with the experimental results.Finally,by using scanning electron microscope(SEM),the microscopic fracture mechanism of tested steel under extremely low cycle fatigue at different frequencies was compared and analyzed.
In this paper,the effect of two kinds of seismic limit frequencies on the extremely low cycle fatigue(ELCF)performance of Q235 steel structural material are investigated.ELCF experiment for the tested steel was carried out on Shimadzu electro-hydraulic servo fatigue testing machine by using the transverse strain control method and keeping the frequency of 1 Hz and 3 Hz,respectively.It is found that the response characteristics of cyclic stress,the cyclic stress-strain relationship and fatigue life are all related to frequency,and secondary cyclic hardening of tested material occurs at higher frequencies.Based on plastic strain amplitude and strain rate,the fatigue life prediction formulas of tested steel were established respectively,under both frequency condition.The two life prediction formulas are in good agreement with the experimental results.Finally,by using scanning electron microscope(SEM),the microscopic fracture mechanism of tested steel under extremely low cycle fatigue at different frequencies was compared and analyzed.
引文
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[3] Tao C.Extremely low cycle fatigue assessment of thick-walled steel piers[D].Nagoya University,2007.
[4]韦尧兵,黄建龙,靳伍银,等.超低周变幅疲劳断裂设计的几个问题[J].甘肃工业大学学报,1998,24(2):109-112(WEI Yaobing,HUANG Jianlong,JIN Wuyin,et al.several problems on extra low cycle fatigue fracture design[J].Journal of Gansu Industrial University,1998,24(2):109-112(in Chinese))
[5]赵学才.超低周条件下Q235的断裂特性研究[D].兰州理工大学,2007(ZHAO Xuecai.Research on fracture properties of Q235under the extra low cycle conditions[D].Lanzhou University of Technology,2007(in Chinese))
[6]龚大弘,辛义德,鄢如恢.地震区建筑结构钢的抗震性能问题[J].工程抗震与加固改造,1987(3):33-37(GONG Shihong,XIN Yide,YAN Ruhui.Seismic performance of building structural steel in earthquake area[J].Earthquake Resistant Engineering and Retrofitting,1987(3):33-37(in Chinese))
[7]崔仕明,王睿东,游翔,等.Q345低周疲劳性能与疲劳寿命预测分析[J].实验力学,2014,29(5):537-542(CUI Shiming,WANG Ruidong,YOU Xiang,et al.Analysis of low cycle fatigue performance and fatigue life of Q345[J].Journal of Experimental Mechanics,2014,29(5):537-542(in Chinese))
[8]蒲玉梅,吴林,吴结才.Q235B、Q345B H型钢综合抗震性能试验研究[J].安徽冶金,2005(4):1-5(PU Yumei,WU Lin,WU Jiecai.The overall anti-seismic properties of Q235Band Q345BH H-beams[J].Anhui Metallurgy,2005(4):1-5(in Chinese))
[9]罗云蓉,王清远,刘永杰,等.Q235、Q345钢结构材料的低周疲劳性能[J].四川大学学报(工程科学版),2012,44(2):169-175(LUO Yunrong,WANG Qingyuan,Liu Yongjie,et al.Low cycle fatigue properties of steel structure materials Q235and Q345[J].Journal of Sichuan University(Engineering Science Edition),2012,44(2):169-175(in Chinese))
[10]田雨,纪卓尚.低周疲劳损伤对老化船舶结构剩余极限强度的影响[J].中国造船,2010,51(1):115-121(TIAN Yu,JI Zhuoshang.Effect of low cycle fatigue damage on residual limit strength of aging ship structure[J].Shipbuilding of China,2010,51(1):115-121(in Chinese))
[11]黄波,陈泉,李涛,等.国标Q235钢屈曲约束支撑低周疲劳试验研究[J].土木工程学报,2013(6):29-34(HUANG Bo,CHEN Quan,LI Tao,et al.Experimental study on low cycle fatigue of buckling constrained support of national standard Q235steel[J].China Civil Engineering Journal,2013(6):29-34(in Chinese))
[12]张小元,张克实,黄世鸿,等.Q235结构钢低周多轴疲劳寿命评估方法的实验研究[J].广西大学学报(自然科学版),2013(4):982-990(ZHANG Xiaoyuan,ZHANG Keshi,HUANG Shihong,et al.Experimental study on evaluation method of low cycle and multi-axis fatigue life of Q235structural steel[J].Journal of Guangxi University(Natural Science Edition),2013(4):982-990(in Chinese))
[13]张小元,黄世鸿,张克实.Q235钢拉扭多轴低周疲劳的试验研究[C]//中国力学大会,2013(ZHANG Xiaoyuan,HUANG Qiushi,ZHANG Keshi.Experimental study on multiaxial low cycle fatigue of Q235steel under tension and torsion[C]//China Conference of Mechanics,2013(in Chinese))
[14]于海丰,张文元,张耀春.Q235焊接工字形钢支撑的低周疲劳性能试验及数值模拟[J].四川大学学报(工程科学版),2012,44(2):182-190(YU Haifeng,ZHANG Wenyuan,ZHANG Yaochun.Low-cycle fatigue performance test and numerical simulation of welded I-shaped steel support[J].Journal of Sichuan University(Engineering Science Edition),2012,44(2):182-190(in Chinese))
[15]罗云蓉,王清远,付磊,等.Q235钢结构材料的超低周疲劳性能研究[J].钢铁研究学报,2016,28(12):47-51(LUO Yunrong,WANG Qingyuan,FU Lei,et al.Extremely low cycle fatigue properties of steel structure materials Q235[J].Journal of Iron and Steel Research,2016,28(12):47-51(in Chinese))
[16] Sheng G M,Gong S H.Investigation of low cycle fatigue behaviour of building structural steels under earthquake loading[J].Acta Metallurgica Sinica(English Letters),1997,10(1):51-55.
[17]周承恩,谢季佳,洪友士.超高周疲劳研究现状及展望[J].机械强度,2004,26(5):526-533(ZHOU Chengen,XIE Jijia,HONG Youshi.Research status and prospect of ultra high cycle fatigue[J].Journal of Mechanical Strength,2004,26(5):526-533(in Chinese))
[18] Shi X Q,Pang H L J,Zhou W,et al.Low cycle fatigue analysis of temperature and frequency effects in eutectic solder alloy[J].International Journal of Fatigue,2000,22(3):217-228.
[19] Kanchanomai C,Miyashita Y,Mutoh Y,et al.Influence of frequency on low cycle fatigue behavior of Pb-free solder 96.5Sn-3.5Ag[J].Materials Science and Engineering:A,2003,345(1):90-98.
[20] Knop M,Heath J,Sterjovski Z,et al.Effects of cycle frequency on corrosion-fatigue crack growth in cathodically protected high-strength steels[J].Procedia Engineering,2010,2(1):1243-1252.
[21] Morrissey R J,Mcdowell D L,Nicholas T.Frequency and stress ratio effects in high cycle fatigue of Ti-6Al-4V[J].International Journal of Fatigue,1997,21(7):679-685.
[22] Chai G C,Liu P,Zhou N,et al.Low and high cycle fatigue behavior of nickel-base alloy at high temperatures[J].Procedia Engineering,2013,55:671-676.
[23] Chai G,Liu P,Frodigh J.Cyclic deformation behaviour of a nickel base alloy at elevated temperature[J].Journal of Materials Science,2004,39(8):2689-2697.
[24] Kanchanomai C,Miyashita Y,Mutoh Y.Strain-rate effects on low cycle fatigue mechanism of eutectic Sn-Pb solder[J].International Journal of Fatigue,2002,24(9):987-993.
[25] Luo Y R,Huang C X,Tian R H,et al.Strain-rate effects on the low cycle fatigue behaviors of high-strength structural steel[J].Journal of Iron and Steel Research International,2013,20(7):50-56.
[26] Luo Y R,Wang Q R,Yang B.Low cycle fatigue tests on low carbon steel[C]//BMEI 2011-Proceedings 2011International Conference on Business Management and Electronic Information,Guangzhou,2011:741-746.
[2]龚士弘,盛光敏.地震区建筑用钢的韧性对建筑物抗震性能的影响[J].工程抗震,2004(3):41-47(GONG Shihong,SHENG Guangmin.Effects of toughness of steel on seismic performance of building structures[J].Earthquake Resistant Engineering,2004(3):41-47(in Chinese))
[3] Tao C.Extremely low cycle fatigue assessment of thick-walled steel piers[D].Nagoya University,2007.
[4]韦尧兵,黄建龙,靳伍银,等.超低周变幅疲劳断裂设计的几个问题[J].甘肃工业大学学报,1998,24(2):109-112(WEI Yaobing,HUANG Jianlong,JIN Wuyin,et al.several problems on extra low cycle fatigue fracture design[J].Journal of Gansu Industrial University,1998,24(2):109-112(in Chinese))
[5]赵学才.超低周条件下Q235的断裂特性研究[D].兰州理工大学,2007(ZHAO Xuecai.Research on fracture properties of Q235under the extra low cycle conditions[D].Lanzhou University of Technology,2007(in Chinese))
[6]龚大弘,辛义德,鄢如恢.地震区建筑结构钢的抗震性能问题[J].工程抗震与加固改造,1987(3):33-37(GONG Shihong,XIN Yide,YAN Ruhui.Seismic performance of building structural steel in earthquake area[J].Earthquake Resistant Engineering and Retrofitting,1987(3):33-37(in Chinese))
[7]崔仕明,王睿东,游翔,等.Q345低周疲劳性能与疲劳寿命预测分析[J].实验力学,2014,29(5):537-542(CUI Shiming,WANG Ruidong,YOU Xiang,et al.Analysis of low cycle fatigue performance and fatigue life of Q345[J].Journal of Experimental Mechanics,2014,29(5):537-542(in Chinese))
[8]蒲玉梅,吴林,吴结才.Q235B、Q345B H型钢综合抗震性能试验研究[J].安徽冶金,2005(4):1-5(PU Yumei,WU Lin,WU Jiecai.The overall anti-seismic properties of Q235Band Q345BH H-beams[J].Anhui Metallurgy,2005(4):1-5(in Chinese))
[9]罗云蓉,王清远,刘永杰,等.Q235、Q345钢结构材料的低周疲劳性能[J].四川大学学报(工程科学版),2012,44(2):169-175(LUO Yunrong,WANG Qingyuan,Liu Yongjie,et al.Low cycle fatigue properties of steel structure materials Q235and Q345[J].Journal of Sichuan University(Engineering Science Edition),2012,44(2):169-175(in Chinese))
[10]田雨,纪卓尚.低周疲劳损伤对老化船舶结构剩余极限强度的影响[J].中国造船,2010,51(1):115-121(TIAN Yu,JI Zhuoshang.Effect of low cycle fatigue damage on residual limit strength of aging ship structure[J].Shipbuilding of China,2010,51(1):115-121(in Chinese))
[11]黄波,陈泉,李涛,等.国标Q235钢屈曲约束支撑低周疲劳试验研究[J].土木工程学报,2013(6):29-34(HUANG Bo,CHEN Quan,LI Tao,et al.Experimental study on low cycle fatigue of buckling constrained support of national standard Q235steel[J].China Civil Engineering Journal,2013(6):29-34(in Chinese))
[12]张小元,张克实,黄世鸿,等.Q235结构钢低周多轴疲劳寿命评估方法的实验研究[J].广西大学学报(自然科学版),2013(4):982-990(ZHANG Xiaoyuan,ZHANG Keshi,HUANG Shihong,et al.Experimental study on evaluation method of low cycle and multi-axis fatigue life of Q235structural steel[J].Journal of Guangxi University(Natural Science Edition),2013(4):982-990(in Chinese))
[13]张小元,黄世鸿,张克实.Q235钢拉扭多轴低周疲劳的试验研究[C]//中国力学大会,2013(ZHANG Xiaoyuan,HUANG Qiushi,ZHANG Keshi.Experimental study on multiaxial low cycle fatigue of Q235steel under tension and torsion[C]//China Conference of Mechanics,2013(in Chinese))
[14]于海丰,张文元,张耀春.Q235焊接工字形钢支撑的低周疲劳性能试验及数值模拟[J].四川大学学报(工程科学版),2012,44(2):182-190(YU Haifeng,ZHANG Wenyuan,ZHANG Yaochun.Low-cycle fatigue performance test and numerical simulation of welded I-shaped steel support[J].Journal of Sichuan University(Engineering Science Edition),2012,44(2):182-190(in Chinese))
[15]罗云蓉,王清远,付磊,等.Q235钢结构材料的超低周疲劳性能研究[J].钢铁研究学报,2016,28(12):47-51(LUO Yunrong,WANG Qingyuan,FU Lei,et al.Extremely low cycle fatigue properties of steel structure materials Q235[J].Journal of Iron and Steel Research,2016,28(12):47-51(in Chinese))
[16] Sheng G M,Gong S H.Investigation of low cycle fatigue behaviour of building structural steels under earthquake loading[J].Acta Metallurgica Sinica(English Letters),1997,10(1):51-55.
[17]周承恩,谢季佳,洪友士.超高周疲劳研究现状及展望[J].机械强度,2004,26(5):526-533(ZHOU Chengen,XIE Jijia,HONG Youshi.Research status and prospect of ultra high cycle fatigue[J].Journal of Mechanical Strength,2004,26(5):526-533(in Chinese))
[18] Shi X Q,Pang H L J,Zhou W,et al.Low cycle fatigue analysis of temperature and frequency effects in eutectic solder alloy[J].International Journal of Fatigue,2000,22(3):217-228.
[19] Kanchanomai C,Miyashita Y,Mutoh Y,et al.Influence of frequency on low cycle fatigue behavior of Pb-free solder 96.5Sn-3.5Ag[J].Materials Science and Engineering:A,2003,345(1):90-98.
[20] Knop M,Heath J,Sterjovski Z,et al.Effects of cycle frequency on corrosion-fatigue crack growth in cathodically protected high-strength steels[J].Procedia Engineering,2010,2(1):1243-1252.
[21] Morrissey R J,Mcdowell D L,Nicholas T.Frequency and stress ratio effects in high cycle fatigue of Ti-6Al-4V[J].International Journal of Fatigue,1997,21(7):679-685.
[22] Chai G C,Liu P,Zhou N,et al.Low and high cycle fatigue behavior of nickel-base alloy at high temperatures[J].Procedia Engineering,2013,55:671-676.
[23] Chai G,Liu P,Frodigh J.Cyclic deformation behaviour of a nickel base alloy at elevated temperature[J].Journal of Materials Science,2004,39(8):2689-2697.
[24] Kanchanomai C,Miyashita Y,Mutoh Y.Strain-rate effects on low cycle fatigue mechanism of eutectic Sn-Pb solder[J].International Journal of Fatigue,2002,24(9):987-993.
[25] Luo Y R,Huang C X,Tian R H,et al.Strain-rate effects on the low cycle fatigue behaviors of high-strength structural steel[J].Journal of Iron and Steel Research International,2013,20(7):50-56.
[26] Luo Y R,Wang Q R,Yang B.Low cycle fatigue tests on low carbon steel[C]//BMEI 2011-Proceedings 2011International Conference on Business Management and Electronic Information,Guangzhou,2011:741-746.
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