1.中车唐山机车车辆有限公司 技术研究中心,唐山 064000
2.中车唐山机车车辆有限公司 制造技术中心,唐山 064000
3.中车科技创新(北京)有限公司 十五研究所,北京 100080]
ZHAO Zhongqiang, E-mail: zhaozhongqiang.ts@crrcgc.cc
收稿:2024-03-19,
纸质出版:2026-01-15
移动端阅览
赵中强,曹田野,王辉,等. 基于热力耦合的裂纹尖端应力强度因子特性分析[J]. 机械强度,2026,48(1):109-115.
ZHAO Zhongqiang,CAO Tianye,WANG Hui,et al. Analysis of stress intensity factor at the crack tip based on thermal-mechanical coupling[J]. Journal of Mechanical Strength,2026,48(1):109-115.
赵中强,曹田野,王辉,等. 基于热力耦合的裂纹尖端应力强度因子特性分析[J]. 机械强度,2026,48(1):109-115. DOI: 10.16579/j.issn.1001.9669.2026.01.014.
ZHAO Zhongqiang,CAO Tianye,WANG Hui,et al. Analysis of stress intensity factor at the crack tip based on thermal-mechanical coupling[J]. Journal of Mechanical Strength,2026,48(1):109-115. DOI: 10.16579/j.issn.1001.9669.2026.01.014.
目的
2
为明确接触疲劳失效机制和影响因素,提高机械零件抗疲劳性能,延长疲劳寿命,开展了接触疲劳下表面裂纹萌生和疲劳扩展机制的研究。
方法
2
采用有限元法和断裂力学理论对滑动接触时热力耦合作用下裂纹尖端应力强度因子的影响因素进行分析,分别计算并得到了不同压力载荷、摩擦因数、裂纹长度、裂纹角度、滑动速度下裂纹尖端应力强度因子的变化规律。
结果
2
结果表明,滑动接触热力耦合下裂纹为Ⅰ-Ⅱ复合型裂纹,随着滑块逐渐靠近裂纹,裂纹由Ⅰ型向Ⅱ型转变;热效应会抑制裂纹的Ⅰ、Ⅱ型扩展,且热效应越显著,抑制作用越强,但
K
Ⅰ
对热效应更为敏感,而
K
Ⅱ
受其影响较弱;压力载荷和裂纹角度增加,复合型裂纹扩展加剧;增大摩擦因数,裂纹的Ⅰ型扩展加剧,Ⅱ型扩展减弱;裂纹长度增加,Ⅰ型扩展减弱,Ⅱ型扩展增强;裂纹的Ⅰ、Ⅱ型扩展均随滑动速度的增加而减弱。
Objective
2
To clarify the failure mechanism and influencing factors of contact fatigue, improve the fatigue resistance of mechanical parts, and extend the fatigue life, research on the initiation and propagation mechanism of surface cracks under contact fatigue was carried out.
Methods
2
The influencing factors of the stress intensity factor at the crack tip under sliding contact thermo-mechanical coupling were analyzed by the finite element method and fracture mechanics theory. The variation rules of the stress intensity factor under different pressure loads, friction coefficients, crack lengths, crack angles, and sliding velocities were obtained.
Results
2
The results show that the crack belongs to the Ⅰ-Ⅱ compound crack. The mode of crack changes from Ⅰ to Ⅱ as the sliding block approaches the crack. The thermal effect can suppress Ⅰ and Ⅱ expansion, and the more significant the thermal effect is, the stronger the inhibition is. However,
K
Ⅰ
is more sensitive to the thermal effect than
K
Ⅱ
. The compound crack propagation intensifies with the increase of pressure load and crack angle. The mode Ⅰ extension intensifies while mode Ⅱ decreases when the friction coefficient increases. The mode Ⅰ extension decreases, and the mode Ⅱ extension increases when the crack length increases. Both mode Ⅰ and Ⅱ extensions become weak with the increase of sliding speed.
杨大鹏 , 王均杰 , 杨新华 , 等 . 疲劳载荷作用下裂纹扩展速率的研究 [J]. 机械强度 , 2017 , 39 ( 1 ): 178 - 182 .
YANG Dapeng , WANG Junjie , YANG Xinhua , et al . Study on crack propagation rate under fatigue load [J]. Journal of Mechanical Strength , 2017 , 39 ( 1 ): 178 - 182 . (In Chinese)
钟群鹏 , 赵子华 , 张峥 . 断口学的发展及微观断裂机制研究 [J]. 机械强度 , 2005 , 27 ( 3 ): 358 - 370 .
ZHONG Qunpeng , ZHAO Zihua , ZHANG Zheng . Development of “fractography" and research of fracture micromechanism [J]. Journal of Mechanical Strength , 2005 , 27 ( 3 ): 358 - 370 . (In Chinese)
闫玉涛 , 姜程 , 高连琪 . 基于Morris法滑动磨损与接触疲劳耦合损伤寿命分析 [J]. 东北大学学报(自然科学版) , 2023 , 44 ( 7 ): 964 - 971 .
YAN Yutao , JIANG Cheng , GAO Lianqi . Life analysis of coupling damage between sliding wear and contact fatigue based on Morris method [J]. Journal of Northeastern University(Natural Science) , 2023 , 44 ( 7 ): 964 - 971 . (In Chinese)
袁洁 , 纪宏超 , 宋昌哲 , 等 . 齿轮疲劳裂纹萌生与扩展行为研究现状 [J]. 机械传动 , 2023 , 47 ( 5 ): 167 - 176 .
YUAN Jie , JI Hongchao , SONG Changzhe , et al . Research status of initiation and expansion behavior of gear fatigue cracks [J]. Journal of Mechanical Transmission , 2023 , 47 ( 5 ): 167 - 176 . (In Chinese)
TROLLÉ B , BAIETTO M C , GRAVOUIL A , et al . 2D fatigue crack propagation in rails taking into account actual plastic stresses [J]. Engineering Fracture Mechanics , 2014 , 123 : 163 - 181 .
GLODEŽ S , POTOČNIK R , FLAŠKER J , et al . Numerical modelling of crack path in the lubricated rolling-sliding contact problems [J]. Engineering Fracture Mechanics , 2008 , 75 ( 3/4 ): 880 - 891 .
ANCELLOTTI S , BENEDETTI M , DALLAGO M , et al . Fluid pressurization and entrapment effects on the SIFs of cracks produced under lubricated rolling-sliding contact fatigue [J]. Procedia Structural Integrity , 2016 , 2 : 3098 - 3108 .
宋欣 . 波磨特征对车轮滚动接触疲劳裂纹扩展影响仿真研究 [D]. 北京 : 北京交通大学 , 2020 : 57 - 63 .
SONG Xin . Simulation study on the influence of wave wear characteristics on wheel rolling contact fatigue cracks growth [D]. Beijing : Beijing Jiaotong University , 2020 : 57 - 63 . (In Chinese)
王梦凡 , 阚前华 , 赵吉中 , 等 . 钢轨表面三维疲劳裂纹扩展数值分析 [J]. 固体力学学报 , 2023 , 44 ( 3 ): 355 - 367 .
WANG Mengfan , KAN Qianhua , ZHAO Jizhong , et al . Numerical analysis of 3D fatigue crack propagation on rail surface [J]. Chinese Journal of Solid Mechanics , 2023 , 44 ( 3 ): 355 - 367 . (In Chinese)
KO P L , IYER S S , VAUGHAN H , et al . Finite element modelling of crack growth and wear particle formation in sliding contact [J]. Wear , 2001 , 251 ( 1/2/3/4/5/6/7/8/9/10/11/12 ): 1265 - 1278 .
GOSHIMA T , ISHIHAR S , SHIMIZU M , et al . Crack propagation and initiation lives for surface pitting due to rolling/sliding contact [J]. Journal of Thermal Stresses , 2010 , 33 ( 11 ): 1087 - 1106 .
闫玉涛 , 钱晓林 , 张毅博 , 等 . 滑动接触效应对裂纹尖端 J 积分值影响分析 [J]. 东北大学学报(自然科学版) , 2016 , 37 ( 12 ): 1744 - 1749 .
YAN Yutao , QIAN Xiaolin , ZHANG Yibo , et al . Analysis on crack tip J integral value under sliding contact effect [J]. Journal of Northeastern University(Natural Science) , 2016 , 37 ( 12 ): 1744 - 1749 . (In Chinese)
徐杰 . 表面疲劳裂纹扩展的数值模拟 [D]. 杭州 : 浙江理工大学 , 2012 : 8 - 17 .
XU Jie . Numerical simulation of surface fatigue crack growth of surface crack [D]. Hangzhou : Zhejiang Sci-Tech University , 2012 : 8 - 17 . (In Chinese)
伍晓赞 , 徐慧 , 王德志 . 单边斜裂纹的应力强度因子计算 [J]. 湖南文理学院学报(自然科学版) , 2009 , 21 ( 1 ): 23 - 26 .
WU Xiaozan , XU Hui , WANG Dezhi . Analysis of the stress intensity factor in unilateral oblique crack [J]. Journal of Hunan University of Arts and Science(Science and Technology) , 2009 , 21 ( 1 ): 23 - 26 . (In Chinese)
ZHANG H Q , SADEGHIPOUR K , BARAN G . Numerical study of polymer surface wear caused by sliding contact [J]. Wear , 1999 , 224 ( 1 ): 141 - 152 .
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