| 塑性变形演化对螺纹联接松动的影响研究 |
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| 引用本文： | 侯世远,廖日东. 塑性变形演化对螺纹联接松动的影响研究[J]. 北京理工大学学报, 2015, 35(9): 924-930. DOI: 10.15918/j.tbit1001-0645.2015.09.009 |
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| 作者姓名： | 侯世远 廖日东 |
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| 作者单位： | 北京理工大学机械与车辆学院,北京,100081;北京理工大学机械与车辆学院,北京,100081 |
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| 基金项目： | 国家部委动力专项基金资助项目(104010205) |
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| 摘 要： | 通过考虑材料的棘轮效应,数值模拟了螺纹联接早期的松动行为,并以此为基础展开了载荷方向、预紧力、侧向载荷幅值、摩擦因数对这一阶段螺纹联接松动的影响规律研究. 研究结果显示,首次循环可以使得螺栓张紧力大幅下降;在后续的循环中,螺纹联接的材料的棘轮效应不可忽视;在所研究的各影响因素中,侧向载荷幅值对本问题的影响最为明显.
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| 关 键 词： | 螺纹 松动 棘轮效应 |
| 收稿时间： | 2014-01-21 |
Influence of Ratcheting on Self-Loosening of Bolted Joints |
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| HOU Shi-yuan and LIAO Ri-dong. Influence of Ratcheting on Self-Loosening of Bolted Joints[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2015, 35(9): 924-930. DOI: 10.15918/j.tbit1001-0645.2015.09.009 |
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| Authors: | HOU Shi-yuan and LIAO Ri-dong |
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| Affiliation: | Schoo1 of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | Considering the ratcheting behavior, the early stage of bolt tension losses was studied numerically, and effects of some factors, load direction, pre-tightenforce, side load amplitude and friction factor, which may affect the progress were analyzed. Simulation results show that the bolt tension declines greatly after the first load circle, and in the following load circles, its further loss is caused by ratcheting behavior of the first thread root. In all factors studied in this paper, load amplitude impacts the progress most significantly. |
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| Keywords: | bolted joint loosening ratcheting |
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