真空开关传动系统疲劳裂纹扩展特性研究

doi:10.19595/j.cnki.1000-6753.tces.250629

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Abstract Fatigue failure of key structures under cyclic loading is one of the factors leading to the inability of vacuum switches. However, the failure mechanism under the combined effects of impact and constant load remains unclear. Traditional safety life assessment methods, which rely on the unrealistic assumption of defect-free materials, are limited in their applicability. Therefore, this paper proposes a numerical simulation method for the damage process that couples an impulse load with the time-varying strain of a mechanical structure. By constructing a crack-propagation model of the key structure of the vacuum switch, the fatigue failure mechanism of the connecting plate is elucidated, and the structure's weakness is optimized.
First, a dynamic characteristics calculation model of a 12 kV vacuum switch is established in ADAMS, and the mechanism's closing motion characteristics are analyzed. Then, the impact behavior of the vacuum switch transmission structure is simulated using LS-DYNA, and the critical stress region is identified. To calculate the residual life of the vacuum switch transmission mechanism, a fracture mechanics approach is employed to analyze crack propagation in the connecting plate structure, and the evolution of crack propagation to fracture under impact loading is simulated. Finally, according to the stress distribution and failure mode of the vacuum switch transmission system, an anti-damage design scheme for the connecting plate is proposed.
The simulation results of the dynamic model indicate that the maximum stress in the transmission connecting plate structure occurs at the upper part of the fixed pin, with a value of approximately 239 MPa. Therefore, mechanical damage is likely to occur at this position. The fatigue crack propagation results on the connecting plate structure show that the fatigue crack of the transmission connecting plate belongs to the open crack. When the crack propagation reaches 11 mm, the critical size is reached; the connecting plate structure then fails rapidly under cyclic loading, with a failure period of only 57 cycles. Therefore, to avoid sudden failure of the connecting plate, the fatigue crack growth in the connecting plate structure should be controlled to remain below 11 mm. When the crack size approaches 11 mm, the connecting plate should be repaired promptly.
The following conclusions can be drawn. (1) The critical crack length increases with the increase in the height of the connecting plate. However, the crack-propagation path is essentially unchanged. In addition, in the stage of rapid propagation, the increase in the height of the connecting plate does not reduce the stress intensity factor at the fatigue crack tip. Therefore, increasing the height of the connecting plate can improve the overall fatigue life of the structure but cannot effectively prevent the rapid propagation of cracks. (2) When the crack passes through the stiffeners, the morphology of the crack front changes, and the crack propagation speed near the stiffener is slower than that away from the stiffener. Therefore, orienting the stiffeners along the direction of crack propagation can improve the distribution of the stress intensity factor at the crack tip and delay the crack propagation.

Key words： Vacuum switch transmission system mechanical properties crack propagation structural optimization

Received: 17 April 2025

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TM561

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	Dong Huajun
	Li Dongheng
	Li Jinjin
	Ding Gengxin
	Cheng Yonglei

Cite this article:

Dong Huajun,Li Dongheng,Li Jinjin等. Research on Fatigue Crack Propagation Characteristics of Vacuum Switch Transmission System[J]. Transactions of China Electrotechnical Society, 2026, 41(8): 2853-2866.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.250629 OR https://dgjsxb.ces-transaction.com/EN/Y2026/V41/I8/2853

[1] 王建华, 耿英三, 刘志远, 等. 高电压等级真空开断技术[J]. 高压电器, 2017, 53(3): 1-11.
Wang Jianhua, Geng Yingsan, Liu Zhiyuan, et al.High voltage level vacuum switching technology[J]. High Voltage Apparatus, 2017, 53(3): 1-11.
[2] 欧健, 廖敏夫, 卢刚, 等. 激光触发真空开关导通电感测量及特性研究[J]. 电工技术学报, 2023, 38(16): 4499-4506.
Ou Jian, Liao Minfu, Lu Gang, et al.Measurement and characteristic research of laser triggered vacuum switch on-inductance[J]. Transactions of China Elec-trotechnical Society, 2023, 38(16): 4499-4506.
[3] 李元钊, 丁健刚, 刘志远, 等. 并联电容对真空灭弧室内部电位分布的改善作用[J]. 电工技术学报, 2025, 40(2): 610-624.
Li Yuanzhao, Ding Jiangang, Liu Zhiyuan, et al.The improving effect of parallel capacitors on the internal potential distribution of vacuum interrupters[J]. Transactions of China Electrotechnical Society, 2025, 40(2): 610-624.
[4] 李静, 袁志曹, 曹云东, 等. 触头运动特性对直流接触器开断性能影响[J]. 电机与控制学报, 2023, 27(11): 79-89.
Li Jing, Yuan Zhicao, Cao Yundong, et al.Influence of contact motion characteristics on breaking per-formance of DC contactor[J]. Electric Machines and Control, 2023, 27(11): 79-89.
[5] 马飞越, 姚晓飞, 刘志远, 等. 2/3匝线圈式纵磁触头大开距真空断路器分闸速度设计[J]. 电工技术学报, 2024, 39(13): 4139-4152.
Ma Feiyue, Yao Xiaofei, Liu Zhiyuan, et al.Design of opening velocities for large-gap vacuum circuit breakers with 2/3 coil-type axial magnetic field contacts[J]. Transactions of China Electrotechnical Society, 2024, 39(13): 4139-4152.
[6] 葛国伟, 王文博, 程显, 等. 基于两间隙异步联动的一体化高压真空灭弧室电场设计[J]. 电工技术学报, 2024, 39(17): 5555-5564.
Ge Guowei, Wang Wenbo, Cheng Xian, et al.Electric field design of integrated high-voltage vacuum interrupter based on two-gap asynchronous linkage[J]. Transactions of China Electrotechnical Society, 2024, 39(17): 5555-5564.
[7] 董华军, 孙鹏, 李东恒, 等. 考虑电动斥力的真空断路器刚柔耦合系统机械特性研究[J]. 电机与控制学报, 2023, 27(3): 147-157.
Dong Huajun, Sun Peng, Li Dongheng, et al.Research on structural characteristics of rigid-flexible coupling system of VCB considering electro-dynamic repulsion force[J]. Electric Machines and Control, 2023, 27(3): 147-157.
[8] 董冰冰, 孟岩, 郭志远. 气体间隙开关触发失效分析及寿命提升方法[J]. 电工技术学报, 2025, 40(1): 264-272.
Dong Bingbing, Meng Yan, Guo Zhiyuan.Trigger failure analysis and life extension methods of gas gap switch[J]. Transactions of China Electrotechnical Society, 2025, 40(1): 264-272.
[9] 董华军, 李东恒, 钟建英, 等. 12kV真空灭弧室触头合闸冲击下疲劳寿命研究[J]. 电工技术学报, 2022, 37(15): 3981-3988.
Dong Huajun, Li Dongheng, Zhong Jianying, et al.Research on fatigue life of contact in 12kV vacuum interrupter under shocking[J]. Transactions of China Electrotechnical Society, 2022, 37(15): 3981-3988.
[10] 许罗鹏, 曹小建, 李久楷, 等. 铝锂合金2198-T8高周疲劳性能及其裂纹萌生机理[J]. 稀有金属材料与工程, 2017, 46(1): 83-89.
Xu Luopeng, Cao Xiaojian, Li Jiukai, et al.High cycle fatigue properties and crack initiation mechanisms of Al-Li 2198-T8 alloy[J]. Rare Metal Materials and Engineering, 2017, 46(1): 83-89.
[11] 李国爱, 王俭堂, 郝时嘉, 等. Al-Cu-Li合金轧制厚板的疲劳性能及断裂机理研究[J]. 湖南大学学报(自然科学版), 2021, 48(12): 129-136.
Li Guoai, Wang Jiantang, Hao Shijia, et al.Study on fatigue property and fracture mechanism of Al-Cu-Li alloy rolled thick plate[J]. Journal of Hunan University (Natural Sciences), 2021, 48(12): 129-136.
[12] 宋江杰, 杨冰, 周旻昊, 等. 超声滚压对LZ50钢疲劳性能及短裂纹行为的影响[J]. 中国表面工程, 2022, 35(6): 98-106.
Song Jiangjie, Yang Bing, Zhou Minhao, et al.Effect of ultrasonic surface rolling processing on fatigue properties and short crack behavior of LZ50 steel[J]. China Surface Engineering, 2022, 35(6): 98-106.
[13] 王建华, 张国钢, 闫静, 等. 高压开关电器发展前沿技术[M]. 北京: 机械工业出版社, 2020.
[14] 于冉冉. 126kV真空断路器触头碰撞冲击与弹跳研究[D]. 西安: 西安交通大学, 2011.
Yu Ranran.Research on contact impact and contact bounce phenomenon of 126kV vacuum circuit breaker[D]. Xi’an: Xi’an Jiaotong University, 2011.
[15] 白凡, 柳勇, 吴君, 等. 基于瞬态分析的浮动核电站高能管路冲击疲劳寿命评估[J]. 装备环境工程, 2019, 16(2): 95-100.
Bai Fan, Liu Yong, Wu Jun, et al.Fatigue life assessment for high-energy pipe of floating nuclear power station under shocking based on instantaneous analysis[J]. Equipment Environmental Engineering, 2019, 16(2): 95-100.
[16] 李丹, 张启伟, 姜旭. 钢桥面板纵肋-顶板焊缝细节疲劳裂纹的应力强度因子分析[J]. 城市道桥与防洪, 2021(7): 249-252, 257.
Li Dan, Zhang Qiwei, Jiang Xu.Analysis on stress intensity factor of detail fatigue crack in longitudinal rib-roof weld of steel bridge decks[J]. Urban Roads Bridges & Flood Control, 2021(7): 249-252, 257.
[17] 张清华, 金正凯, 刘益铭, 等. 钢桥面板纵肋与顶板焊接细节疲劳裂纹扩展三维模拟方法[J]. 中国公路学报, 2018, 31(1): 57-66.
Zhang Qinghua, Jin Zhengkai, Liu Yiming, et al.3-D simulation method for fatigue crack propagation in rib-to-deck welded joints of orthotropic steel bridge deck[J]. China Journal of Highway and Transport, 2018, 31(1): 57-66.
[18] 张亚海, 郭宝圣, 张卫国, 等. 钢桥面板-纵肋双面焊缝疲劳裂纹应力强度因子[J]. 土木与环境工程学报(中英文), 2022, 44(3): 62-70.
Zhang Yahai, Guo Baosheng, Zhang Weiguo, et al.Fatigue crack stress intensity factor of double-sided welded rib-to-deck joints in steel bridge deck[J]. Journal of Civil and Environmental Engineering, 2022, 44(3): 62-70.
[19] 袁周致远, 吉伯海, 杜彦良, 等. 变幅荷载下钢桥疲劳裂纹扩展规律及长度预测方法研究[J]. 土木工程学报, 2023, 56(10): 43-51.
Yuan Zhouzhiyuan, Ji Bohai, Du Yanliang, et al.Investigation on fatigue crack propagation law and its length prediction method for steel bridge under variable amplitude load[J]. China Civil Engineering Journal, 2023, 56(10): 43-51.
[20] 张高楠. 基于3D断裂力学的正交异性钢桥肋—桥面焊缝的疲劳寿命评估[D]. 天津: 天津大学, 2014.
Zhang Gaonan.Fracture mechanics-based fatigue evaluation of the rib-to-deck welded joints of the orthotropic steel bridges[D]. Tianjin: Tianjin Univer-sity, 2014.
[21] 鲁乃唯, 王鸿浩, 陈方怀, 等. 钢桥面顶板焊缝处共线双裂纹耦合扩展特性分析[J]. 湖南大学学报(自然科学版), 2022, 49(11): 180-188.
Lu Naiwei, Wang Honghao, Chen Fanghuai, et al.Analysis on coupled propagation characteristics of two collinear cracks on steel bridge deck to-U rib welding seam[J]. Journal of Hunan University (Natural Sciences), 2022, 49(11): 180-188.
[22] 秦洪远, 黄丹, 刘一鸣, 等. 基于改进型近场动力学方法的多裂纹扩展分析[J]. 工程力学, 2017, 34(12): 31-38.
Qin Hongyuan, Huang Dan, Liu Yiming, et al.An extended peridynamic approach for analysis of multiple crack growth[J]. Engineering Mechanics, 2017, 34(12): 31-38.
[23] 朱晔. TBM刀盘三维裂纹扩展规律及其抗损伤设计[D]. 大连: 大连理工大学, 2019.
Zhu Ye.3D crack propagation mechanism and anti-damage design of TBM cutterhead[D]. Dalian: Dalian University of Technology, 2019.
[24] 张健. 304奥氏体不锈钢低周疲劳及疲劳裂纹扩展规律研究[D]. 常州: 江苏理工学院, 2021.
Zhang Jian.Study on low cycle fatigue and fatigue crack growth of 304 austenitic stainless steel[D]. Changzhou: Jiangsu University of Technology, 2021.
[25] 陈立杰, 陈勃, 刘建中, 等. 0Cr18Ni9不锈钢的高温疲劳裂纹扩展规律[J]. 机械强度, 2012, 34(2): 298-302.
Chen Lijie, Chen Bo, Liu Jianzhong, et al.Fatigue crack growth behavior of 0Cr18Ni9 stainless steel at high temperatures[J]. Journal of Mechanical Strength, 2012, 34(2): 298-302.
[26] 冯刚, 宫大为, 张朝阁, 等. 316L不锈钢的疲劳裂纹扩展行为试验[J]. 钢铁, 2014, 49(6): 74-78.
Feng Gang, Gong Dawei, Zhang Chaoge, et al.Experiment of fatigue crack growth behavior of 316L stainless steel[J]. Iron & Steel, 2014, 49(6): 74-78.
[27] 刘胜新. 金属材料力学性能手册[M]. 2版. 北京: 机械工业出版社, 2018.
[28] Yao Xiaofei, Geng Yingsan, Liu Zhiyuan, et al.Mechanical reliability of a 126 kV single-break vacuum circuit breaker[C]//2015 Annual Reliability and Maintainability Symposium (RAMS), Palm Harbor, FL, USA, 2015: 1-7.
[29] 艾绍贵, 姚晓飞, 史雯, 等. 快速真空断路器分闸速度对短路电流开断燃弧时间窗口的影响[J]. 高压电器, 2020, 56(5): 8-12.
Ai Shaogui, Yao Xiaofei, Shi Wen, et al.Influence of opening velocity on short-circuit current interruption arcing time windows of a fast vacuum circuit breaker[J]. High Voltage Apparatus, 2020, 56(5): 8-12.
[30] 王蕾, 管臣, 李欣悦, 等. 快速真空开关电磁斥力机构瞬态动力学研究[J]. 高压电器, 2022, 58(9): 72-77.
Wang Lei, Guan Chen, Li Xinyue, et al.Study on transient dynamic characteristics of electromagnetic repulsion mechanism for fast vacuum switch[J]. High Voltage Apparatus, 2022, 58(9): 72-77.