[1]王 雪,王悦东.基于等效结构应力法的 T 型焊接接头剩余寿命分析[J].机械与电子,2021,(08):13-17.
　WANG Xue,WANG Yuedong.Analysis of Remaining Life of T-shaped Welded Joints Based on Equivalent Structural Stress Method[J].Machinery & Electronics,2021,(08):13-17.
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基于等效结构应力法的 T 型焊接接头剩余寿命分析()
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机械与电子[ISSN:1001-2257/CN:52-1052/TH]

卷:
期数:
2021年08期
页码:
13-17
栏目:
设计与研究
出版日期:
2021-08-24

文章信息/Info

Title:
Analysis of Remaining Life of T-shaped Welded Joints Based on Equivalent Structural Stress Method
文章编号:
１００１-２２５７ ( ２０２１ ) ０８-００１３-０５
作者:
王 雪; 王悦东
大连交通大学机车车辆工程学院,辽宁 大连 １１６０２８
Author(s):
WANG Xue ;  WANG Yuedong
( School of Locomotive and Rolling Stock Engineering , Dalian Jiaotong University , Dalian １１６０２８ , China )
关键词:
剩余寿命;  T 型接头; 等效结构应力; BS７９１０ ;  Paris 曲线
Keywords:
remaining life ;  T-joint ;  equivalent structural stress ;  BS７９１０ ;  Paris curve
分类号:
TG４０５
文献标志码:
A
摘要:
针对已服役结构的剩余寿命问题,利用美国 ASME 标准中的等效结构应力法,对含初始裂纹缺陷的 T 型接头进行剩余寿命评估,利用试验数据对等效应力法求解剩余寿命进行了验证,对比了不同初始缺陷尺寸对焊接接头剩余寿命的影响.同时,基于英国 BS７９１０ 标准中的剩余寿命计算方法,得到了一阶Paris 曲线及修正后的二阶 Paris 曲线下 T 型接头的疲劳剩余寿命,将 ２ 个标准所得结果进行对比.结果表明:含有初始裂纹对 T 型接头寿命结果影响很大;基于结构应力法求解疲劳寿命时,所得结果值接近试验结果及基于 BS７９１０ 标准中得到的结果,证明该方法具有高度准确性.
Abstract:
Aiming at the remaining life problem of the in-service structure , the equivalent structural stress method in the American ASME standard was used to evaluate the remaining life of the T-joint with initial crack defects , and the equivalent stress method was used to verify the remaining life using the test data．The effects of different initial defect sizes on the remaining life of welded joints are compared．At the same time , based on the remaining life calculation method in the British BS７９１０ standard , the fatigue remaining life of the T-joint under the first-order Paris curve and the revised two-order Paris curve is obtained , and the results obtained from the two standards are compared．The results show that the initial cracks have a great influence on the life results of T-joints ; when the fatigue life is calculated based on the structural stress method , the results obtained are close to the test results and the results obtained based on the BS７９１０ standard , which proves that the method has a high degree of accuracy．

参考文献/References:

[１] 兆文忠,李向伟,董平沙 ． 焊接结构抗疲劳设计理论与方法[ M ] ． 北京:机械工业出版社,２０１７．

[２] British Standards Institute．Guide to method for assessing the accept ability of flaws in metallic structures :BS７９１０ : ２００５[ S ] ．London : British Standards Institution , ２００５．
[３] The American Society of Mechanical Engineers．ASME Boiler and pressure vessel code : ASME BPVC VIII-２-２０１５ [ S ] ．New York : The American Society of Mechanical Engineers , ２０１５．
[４] 王乐欣,王悦东,田万原 ． 考虑焊接缺陷的焊接接头疲劳寿命评估方法研究[ J ] ． 机械设计与制造工程, ２０２０ ,４９ ( ９ ): ６０-６４．
[５] 刘潮涛,王悦东,兆文忠 ． 铝合金缺口试样疲劳寿命预测新方法研究[ J ] ． 大连交通大学学报, ２０１４ , ３５ ( ６ ): １９-２２．
[６] 谭润泽,李晓彬,乐京霞 ． 基于结构应力法的薄板对接焊缝疲劳性能[ J ] ． 华中科技大学学报(自然科学版),２０２０ , ４８ ( １０ ): ８１-８５．
[７] 杨海宾,朱涛,肖守讷,等 ． 基于结构应力法的车体结构疲劳裂纹扩展与剩余寿命评估 [ J ] ． 铁道机车车辆,２０１９ , ３９ ( １ ): １５-２０ , ７７．
[８] DONG P , HONG J K , OSAGE D A , et al．The master S-N curve method an implementation for fatigue evaluation of welded components in the ASME B&PV code , section Ⅷ , division ２ and AP１５７９-１ / ASME FFS-１ [ M ] ．New York : Welding Research Council Bulletin , ２０１０．
[９] 邹丽 ． 焊接接头疲劳寿命智能评价方法及其应用研究[ D ] ． 大连:大连交通大学,２０１７．
[１０] 宋京京 ． 轨道车辆服役结构可靠性分析[ D ] ． 大连:大连交通大学,２０１９.
[１１] 史朝阳 ． 桥式起重机金属结构疲劳剩余寿命可靠性及其灵敏度分析[ D ] ． 太原:太原科技大学,２０１４．

备注/Memo

备注/Memo:
收稿日期: ２０２１-０４-１９
基金项目:辽宁省自然科学基金( ２０１８２５-３１ );大连市科技创新基金(２０１９J１１CY０１７ )
作者简介:王 雪 ( １９９６－ ),女,黑龙江鸡西人,硕士研究生,研究方向为车辆结构分析与现代设计方法;王悦东 ( １９７７－ ),男,黑龙江佳木斯人,博士,教授,研究方向为车辆结构分析与现代设计方法、数字化仿真分析与优化、结构疲劳虚拟仿真( CAE ),通信作者.
更新日期/Last Update: 2021-08-31