基于DIC的塑性诱导疲劳裂纹闭合行为研究
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摘要
预测变幅载荷作用下的结构寿命,需研究材料的疲劳裂纹闭合效应,确定材料疲劳扩展时张开载荷的变化规律。针对箭体管路结构中常用的0Cr18Ni9不锈钢,通过数字图像相关技术测试2 mm厚0Cr18Ni9不锈钢板疲劳裂纹扩展时的张开载荷,获得张开载荷随裂纹长度、最大应力强度因子的变化关系;初步得到考虑塑性诱发裂纹闭合效应修正的Paris公式,为其在变幅载荷谱下的裂纹扩展行为预测奠定基础。
The study of material's fatigue crack closure effects and the change rule of opening load is the basis of predicting structural life under variable amplitude loads. The opening load of 2 mm 0Cr18Ni9 stainless steel plate commonly used in the structure of rocket pipes was tested by digital image correlation technique under fatigue crack propagation. The relationship between the open load and crack length and the maximum stress intensity factor was obtained. The modified Paris formula considering the effect of plastic induced crack closure was preliminarily obtained,which lays a foundation for prediction of crack propagation behavior under variable load spectrum.
The study of material's fatigue crack closure effects and the change rule of opening load is the basis of predicting structural life under variable amplitude loads. The opening load of 2 mm 0Cr18Ni9 stainless steel plate commonly used in the structure of rocket pipes was tested by digital image correlation technique under fatigue crack propagation. The relationship between the open load and crack length and the maximum stress intensity factor was obtained. The modified Paris formula considering the effect of plastic induced crack closure was preliminarily obtained,which lays a foundation for prediction of crack propagation behavior under variable load spectrum.
引文
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[13]NOWELL D,PAVNTER R J N,DE MATOS P F P.Optical methods for measurement of fatigue crack closure:Moire interferometruy and digital image correlation[J].Fatigue&Fracture of Engineering Materials&Structures,2010,33:778-790.
[14]DE MATOS P F P,NOWELL D.Experimental and numerical investigation of thickness effects in plasticity-induced fatigue crack closure[J].International Journal of Fatigue,2009,31:1795-1804.
[15]NOWELL D,DE MATOS P F P.Application of digital image correlation to the investigation of crack closure following overloads[J].Procedia Engineering,2010,2(1):1035-1043.
[16]GONZáLES G L G,GONZáLEZ J A O,CASTRO J T P,et al.DIC analysis for crack closure investigation during fatigue crack growth following overloads[C].International Digital Imaging Correlation Society,Conference Proceedings of the Society for Experimental Mechanics Series,2017.
[17]SRABBOLINI,S BERERRA,S FOLETTI.Fatigue crack growth in low cycle fatigue:An analysis of crack closure based on image correlation[J].Procedia Engineering,2016,1:158-163.
[18]EREMIN A,SUNDER R,PANIN S.Application of digital Image correlation for estimation of fatigue crack closure level[C].AIP Conference Proceedings,1785,03008:2016.
[19]STEFANO Beretta,SILVIO Rabbolini,ANGELO Di Bello.Muti-scale crack closure measurements with digital image correlation on Haynes 230[J].Fratura ed Integrita Strutturale,2015,33:174-182.
[20]王德强,朱明亮,轩福贞.疲劳短裂纹扩展的闭合效应与裂尖塑性区[J].中国可见论文在线精品论文,2017,10(1):63-68.
[21]Correlated Solutions Inc,USA[EB/OL].[2018-09-30].http://www.correlatedsolutions.com/.
[2]KELESTEMUR M H,CHAKI T K.The effect of overload on the fatigue crack growth behavior of 304 stainless steel in hydrogen[J].Fatigue Fract Engng Master Struct,2001,23:15-22.
[3]?CHSNER A,ALTENBACH H,CHOI H S,et al.Fatigue crack growth characteristics of austenitic stainless steel for coldstretched pressure vessels at cryogenic temperatures[J].Materialwissenschaft Und Werkstofftechnik,2016,47(5/6):444-451.
[4]LEWINSKY P,BAO H,MCEVILY A J.On overloads and the rate of fatigue-crack growth in type 304 stainless steel[J].Materials Science,1996,32(1):99-106.
[5]STAAL H U,ELEN J D.Crack closure and influence of cycle ratio R,on fatigue crack growth in type 304 stainless steel at room temperature[J].Engineering Fracture Mechanics,1979,11(2):275-283.
[6]BAIK Y M,KIM K S.The combined effect of frequency and load level on fatigue crack growth in stainless steel 304[J].International Journal of Fatigue,2001,23(5):417-425.
[7]TSAY L W,LIU Y C,YOUNG M C,et al.Fatigue crack growth of AISI 304 stainless steel welds in air and hydrogen[J].Materials Science&Engineering A,2004,374(1/2):204-210.
[8]SHIH Y S,CHEN J J.The frequency effect on the fatigue crack growth rate of 304 stainless steel[J].Nuclear Engineering&Design,1999,191(2):225-230.
[9]业成.0Cr18Ni9奥氏体不锈钢在低浓度NaCl溶液中的腐蚀疲劳裂纹扩展规律及机理研究[J].压力容器,2000(2):27-31.
[10]BROSE W,DOWLING N.Size effects on the fatigue crack growth rate of type 304 stainless steel[J].ASTM STP,1979(66):720-735.
[11]ELBER W.The significance of fatigue crack closure:Damage tolerance in aircraft structures[J].ASTM STP,1971,486:230-242.
[12]中国钢铁工业协会.GB/T 6398-2000金属材料疲劳裂纹扩展速率试验方法[S].中国标准出版社,2000.
[13]NOWELL D,PAVNTER R J N,DE MATOS P F P.Optical methods for measurement of fatigue crack closure:Moire interferometruy and digital image correlation[J].Fatigue&Fracture of Engineering Materials&Structures,2010,33:778-790.
[14]DE MATOS P F P,NOWELL D.Experimental and numerical investigation of thickness effects in plasticity-induced fatigue crack closure[J].International Journal of Fatigue,2009,31:1795-1804.
[15]NOWELL D,DE MATOS P F P.Application of digital image correlation to the investigation of crack closure following overloads[J].Procedia Engineering,2010,2(1):1035-1043.
[16]GONZáLES G L G,GONZáLEZ J A O,CASTRO J T P,et al.DIC analysis for crack closure investigation during fatigue crack growth following overloads[C].International Digital Imaging Correlation Society,Conference Proceedings of the Society for Experimental Mechanics Series,2017.
[17]SRABBOLINI,S BERERRA,S FOLETTI.Fatigue crack growth in low cycle fatigue:An analysis of crack closure based on image correlation[J].Procedia Engineering,2016,1:158-163.
[18]EREMIN A,SUNDER R,PANIN S.Application of digital Image correlation for estimation of fatigue crack closure level[C].AIP Conference Proceedings,1785,03008:2016.
[19]STEFANO Beretta,SILVIO Rabbolini,ANGELO Di Bello.Muti-scale crack closure measurements with digital image correlation on Haynes 230[J].Fratura ed Integrita Strutturale,2015,33:174-182.
[20]王德强,朱明亮,轩福贞.疲劳短裂纹扩展的闭合效应与裂尖塑性区[J].中国可见论文在线精品论文,2017,10(1):63-68.
[21]Correlated Solutions Inc,USA[EB/OL].[2018-09-30].http://www.correlatedsolutions.com/.