基于毫小薄片试样获取材料应变疲劳性能的测试方法

doi:10.3901/JME.2018.10.068

机械工程学报 ›› 2018, Vol. 54 ›› Issue (10): 68-77.doi: 10.3901/JME.2018.10.068

扫码分享

基于毫小薄片试样获取材料应变疲劳性能的测试方法

尹涛^1,2, 蔡力勋^1,2, 陈辉^1,2, 姚迪^1,2

1. 西南交通大学力学与工程学院成都 610031;
2. 西南交通大学应用力学与结构安全四川省重点实验室成都 610031

收稿日期:2017-06-11 修回日期:2017-12-14 出版日期:2018-05-20 发布日期:2018-05-20
通讯作者: 蔡力勋(通信作者),男,1959年出生,教授,博士研究生导师。主要研究方向为疲劳与断裂力学、材料毫微测试方法。E-mail:lix_cai@263.net
作者简介:尹涛,男,1990年出生。主要研究方向为材料的疲劳与断裂性能。E-mail:heisezhanshi@126.com
基金资助:
国家自然科学基金资助项目（11472228）。

New Test Method to Obtain Strain Fatigue Properties of Materials Based on Millimeter-scaled Slice Specimens

YIN Tao^1,2, CAI Lixun^1,2, CHEN Hui^1,2, YAO Di^1,2

1. School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031;
2. Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu 610031

Received:2017-06-11 Revised:2017-12-14 Online:2018-05-20 Published:2018-05-20

摘要/Abstract

摘要： 通过现行试验标准难以获取小尺寸的薄片、零部件、薄壁管、焊缝区材料的低周疲劳性能。提出一种基于漏斗薄片毫小试样的应变疲劳试验方法：结合应变能分离函数假设，给出毫小薄片试样获取材料循环应力应变关系的预测模型；借助循环应力应变关系，采用有限元得到毫小薄片试样跨漏斗名义应变幅与漏斗根部真实应变幅之间以及平均应力幅与漏斗根部真实应力幅之间的转换方程，从而给出了基于漏斗薄片小试样的材料代表性体积单元（Representative-volume-element，RVE）疲劳寿命曲线并给出Manson-Coffin寿命模型参数。针对不同材料的有限元验证表明，基于应变能分离函数的材料循环应力应变关系预测模型对不同几何尺寸自相似试样和不同幂律材料均具有良好普适性。完成了316L不锈钢等直圆棒试样和厚度为0.7 mm毫小薄片试样的应变对称变幅低循环试验和多级等幅低循环试验，结果表明，通过新方法预测的薄片材料循环应力应变关系和等直圆棒试样试验结果一致，通过毫小薄片试样获得的疲劳寿命曲线与等直圆棒试样试验结果亦吻合良好。

关键词: 毫小薄片试样, 疲劳寿命, 循环应力应变关系预测模型, 应变能分离函数, 应变疲劳试验, 应力幅应变幅转换方程

Abstract: It is difficult to obtain the strain fatigue properties of small-sized materials such as slice, thin-walled pipes, weld zone by the current test standards. A new strain-fatigue test method for millimeter-scaled notched slice specimens is proposed. For the method, a novel cyclic constitutive model for predicting cyclic constitutive relationships of materials due to strain energy separation function assumption is derived, and then two conversion equations by finite element method are obtained to transform the testing strain amplitude and average stress amplitude into real-axial strain amplitude and stress amplitude at the root of the notched specimens. According to the two equations, strain fatigue life curves of material Representative-Volume-Element (RVE) and parameters of Manson-Coffin model via the notched specimens are set up. A series of finite element simulations for different materials show that the cyclic constitutive model is universal effective for different dimensions of the self-similar notched slice specimens and different materials. Variable-amplitude strain fatigue tests and constant-amplitude strain fatigue tests were carried out for the millimeter-scaled notched slice specimens and traditional round bar specimens with symmetric strain-control for 316L stainless steel. The results show that the cyclic constitutive relationships predicted by the cyclic constitutive model and the fatigue life curves of the notched specimens are in good agreement with the experimental results from the traditional round bar specimens.

Key words: fatigue life, millimeter-scaled slice specimen, model for predicting material cyclic constitutive relationship, strain energy separation function, strain-fatigue test, transforming equations of strain amplitude and stress amplitude

中图分类号:

TG156

尹涛, 蔡力勋, 陈辉, 姚迪. 基于毫小薄片试样获取材料应变疲劳性能的测试方法[J]. 机械工程学报, 2018, 54(10): 68-77.

YIN Tao, CAI Lixun, CHEN Hui, YAO Di. New Test Method to Obtain Strain Fatigue Properties of Materials Based on Millimeter-scaled Slice Specimens[J]. Journal of Mechanical Engineering, 2018, 54(10): 68-77.

参考文献

[1] 中国国家标准化管理委员会. GB/T 15248-2008, 金属材料轴向等幅低循环疲劳试验方法[S]. 北京:中国标准出版社,2008. Standardization Administration of the People's Republic of China. GB/T 15248-2008 The test method for axial loading constant-amplitude low-cycle fatigue of metallic materials[S]. Beijing:Standards Press of China,2008.
[2] British Standards Institution. ISO12106-2003,Metallic materials-fatigue testing-axial-train-controlled method[S]. Geneva:International Organization for Standardization,2003.
[3] HE C,HUANG C,LIU Y,et al. Effects of mechanical heterogeneity on the tensile and fatigue behaviours in a laser-arc hybrid welded aluminium alloy joint[J]. Materials & Design,2015,65:289-296.
[4] YE S,ZHANG X C,TU S T. Interaction between local plastic strain and multi-scale fatigue crack propagation behavior in titanium alloy TC4[J]. Applied Mechanics and Materials,2017,853(1):51-56.
[5] WISNER S B,REYNOLDS M B,ADAMSON R B. Fatigue behavior of irradiated and unirradiated zircaloy and zirconium[J]. American Society for Testing and Materials,1994,1:499-520.
[6] 李丹柯,蔡力勋. 锆合金薄片材料高温低周疲劳试验技术[J]. 试验技术与试验机,2007(4):16-20. LI Danke,CAI Lixun. On low cycle fatigue testing technique at elevated temperature based on slice specimen[J]. Test Technology and Testing Machine,2007(4):16-20.
[7] 蔡力勋,叶裕明,高庆,等. Zr-4合金薄片材料的应变疲劳与寿命估算[J]. 西安交通大学学报,2004,38(1):97-104. CAI Lixun,YE Yuming,GAO Qing. Strain fatigue and life estimate of Zr-4 alloy slice[J]. Journal of Xi'an Jiaotong University,2004,38(1):97-104.
[8] 叶裕明,蔡力勋,李聪. Zr-4合金小试样高温疲劳行为研究[J]. 核动力工程,2006,27(3):37-42. YE Yuming,CAI Lixun,LI Cong. LCF behavior of Zr-4 alloy at elevated temperature[J]. Nuclear Power Engineering,2006,27(3):37-42.
[9] 蔡力勋,范宣华,李聪. 高温对Zr-4合金低循环行为的影响[J]. 航空材料学报,2004,24(5):1-6. CAI Lixun,FAN Xuanhua,LI Cong. Effects of elevated temperatures on the low cycle behavior of Zr-4 alloy[J]. Journal of Aeronautical Materials,2004,24(5):1-6.
[10] CAI Lixun,YE Yuming,LI Cong. Low-cycle fatigue behavior of small slice specimens of Zr-4 alloy at elevated temperature[J]. Key Engineering Materials,2006,324-325:1241-1244.
[11] 黄学伟. 新结构材料力学行为的获取方法[D]. 成都:西南交通大学,2010. HUANG Xuewei. Experiment and simulation methods for investigate mechanicals behavior of new structural materials[D]. Chengdu:Southwest Jiaotong University,2010.
[12] 黄学伟,蔡力勋,包陈,等. Zr-Sn-Nb薄片合金高温低周疲劳行为[J]. 原子能科学技术,2010,44(1):60-64. HUANG Xuewei,CAI Lixun,BAO Chen,et al. Low cycle fatigue behavior of Zr-Sn-Nb slice alloy at elevated temperature[J]. Atomic Energy Science and Technology. 2010,44(1):60-64.
[13] 黄学伟,蔡力勋,梁波. 基于单轴漏斗试样的一种低周疲劳测试方法与应用[J]. 中国测试,2009,35(5):7-10. HUANG Xuewei,CAI Lixun,LIANG Bo. Low cycle fatigue test method based on uniaxial test strain of notch specimens and its application[J]. China Measurement & Test,2009,35(5):7-10.
[14] 贾琦. 异型试样疲劳与断裂性能测试方法研究与应用[D]. 成都:西南交通大学,2011. JIA Qi. Research and application of fatigue and fracture properties test method of non-conventional samples[D]. Chengdu:Southwest Jiaotong University. Master,2011.
[15] 贾琦,蔡力勋,包陈. 考虑循环塑性修正的薄片材料低周疲劳试验方法[J]. 工程力学,2014,31(1):218-223. JIA Qi,CAI Lixun,BAO Chen. A testing method to investigate low cycle fatigue behavior of slice materials based on cycling plasticity correction[J]. Engineering Mechanics,2014,31(1):218-223.
[16] HUTCHINSON J W. Singular behaviour at the end of a tensile crack in a hardening material[J]. Journal of the Mechanics and Physics of Solids,1968,16(1):13-31.
[17] 赵少汴. 局部应力应变法及其设计数据[J]. 机械设计,2000,17(2):1-3. ZHAO Shaobian. Local stress-strain method and design data[J]. Journal of Machine Design,2000,17(2):1-3.

基于毫小薄片试样获取材料应变疲劳性能的测试方法

New Test Method to Obtain Strain Fatigue Properties of Materials Based on Millimeter-scaled Slice Specimens

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	师陆冰, 张志宏, 闫晓青, 汤伟毕, 裴帮, 刘忠明. 三峡升船机齿轮齿条运行载荷与疲劳寿命研究[J]. 机械工程学报, 2024, 60(5): 119-129.
[2]	吴吉展, 魏沛堂, 刘怀举, 吴少杰, 朱才朝. 航空齿轮钢表面完整性与滚动接触疲劳性能关联规律研究[J]. 机械工程学报, 2024, 60(4): 284-295.
[3]	曹镜, 姚卫星, 梁德利, 王彬文. 不同温度下混合材料机械连接结构疲劳分析的SSF法[J]. 机械工程学报, 2024, 60(18): 138-145.
[4]	冯明祥, 蒋庆磊, 王旭艳. 零应力温度和模型简化对CCGA器件寿命评估的影响[J]. 机械工程学报, 2024, 60(12): 268-276.
[5]	喻健, 缑百勇, 陈桂勇, 张腾, 马斌麟, 樊祥洪, 陈鑫, 王逸韬. 胶铆混合修理结构疲劳裂纹扩展性能分析[J]. 机械工程学报, 2023, 59(22): 352-368.
[6]	谢里阳, 吴宁祥, 赵丙峰. 两阶段疲劳损伤等效方法与概率疲劳失效判据[J]. 机械工程学报, 2023, 59(16): 107-116.
[7]	张海, 王东坡, 高志伟. 焊接残余应力对超声冲击处理焊接接头疲劳寿命的影响[J]. 机械工程学报, 2023, 59(10): 124-133.
[8]	郑战光, 覃里杜, 谢昌吉, 潘淑琴, 孙腾. 晶体塑性疲劳指示因子研究方法综述[J]. 机械工程学报, 2022, 58(8): 105-116.
[9]	谢树强, 王斌杰, 王文静, 张浩楠, 李强, 姜朝勇. 基于动应力的地铁构架疲劳损伤与疲劳寿命计算[J]. 机械工程学报, 2022, 58(4): 183-190.
[10]	张红卫, 桂良进, 范子杰. 焊接残余应力对桥壳疲劳寿命的影响研究[J]. 机械工程学报, 2022, 58(24): 102-110.
[11]	周长江, 王豪野, 靳广虎, 艾永生. 考虑残余应力的螺旋锥齿轮接触疲劳裂纹萌生-扩展寿命计算方法研究[J]. 机械工程学报, 2022, 58(23): 28-38.
[12]	皇涛, 赵家鑫, 宋克兴, 张学宾, 蒋宇宁, 郝留成. 基于构件S-N曲线的波纹管速度外压耦合加载下疲劳寿命研究[J]. 机械工程学报, 2022, 58(20): 269-282.
[13]	陈炜镒, 胡伟飞, 方健豪, 姜宏伟, 刘振宇, 谭建荣. 考虑雨滴侵蚀的风力发电机叶片涂层疲劳寿命优化设计方法[J]. 机械工程学报, 2022, 58(17): 2-15.
[14]	朱林, 邱建春, 陈敏. 基于修正Sobol灵敏度模型的拨穗授粉机疲劳寿命影响因素分析研究[J]. 机械工程学报, 2022, 58(16): 189-196.
[15]	喻天翔, 赵庆岩, 尚柏林, 宋笔锋. 考虑间隙不确定性的花键概率疲劳寿命预测方法[J]. 机械工程学报, 2022, 58(16): 391-402.