Effect of bolt tightening torque on fatigue life of multi-bolted composite structure
Bolt tightening torque has an influence on the fatigue life of the multi-bolted joints which cannot be ignored, but there are few methods to predict the fatigue life of the multi-bolted composite structure by considering the bolt tightening torque. A fatigue life prediction method of the multi-bolte...
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| Format: | Article |
| Language: | zho |
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EDP Sciences
2023-06-01
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| Series: | Xibei Gongye Daxue Xuebao |
| Subjects: | |
| Online Access: | https://www.jnwpu.org/articles/jnwpu/full_html/2023/03/jnwpu2023413p455/jnwpu2023413p455.html |
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| author | DONG Jiachen YANG Zhiyong ZHENG Xitao SONG Mingyu YAN Leilei |
| author_facet | DONG Jiachen YANG Zhiyong ZHENG Xitao SONG Mingyu YAN Leilei |
| author_sort | DONG Jiachen |
| collection | DOAJ |
| description | Bolt tightening torque has an influence on the fatigue life of the multi-bolted joints which cannot be ignored, but there are few methods to predict the fatigue life of the multi-bolted composite structure by considering the bolt tightening torque. A fatigue life prediction method of the multi-bolted composite structure by considering the bolt tightening torque is proposed. It can take into account the various damages of bolts and laminates and accurately calculate fatigue life and damage evolution of multi-bolted composite structure. The multi-bolted composite structure being composed of T300/BMP-316 composite laminates and TC4 titanium alloy bolts is used to verify the present method. The logarithmic error between the predicted fatigue life and the experimental is 4.36%, and the failure mode is consistent with the experimental. Through the present method, the influence of the bolt tightening torque is explored, in which it is found that with the increasing of bolt tightening torque, the fatigue life increases firstly and decreases, and there is an optimal tightening torque. By observing the damage evolution diagram, it is found that when the tightening torque is below the optimal tightening torque, the damage propagation cannot be effectively restrained, which will lead to the reduction of fatigue life. On the contrary, when the tightening torque is more than the optimal tightening torque, it will cause the initial damage to the test piece, which will also lead to the reduction of fatigue life. In engineering, to choose the best tightening torque of the structure for assembly can effectively improve the fatigue life of the structure. |
| first_indexed | 2024-03-09T07:10:24Z |
| format | Article |
| id | doaj.art-6fe6bffa8960421192c457f77ae1779e |
| institution | Directory Open Access Journal |
| issn | 1000-2758 2609-7125 |
| language | zho |
| last_indexed | 2024-03-09T07:10:24Z |
| publishDate | 2023-06-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Xibei Gongye Daxue Xuebao |
| spelling | doaj.art-6fe6bffa8960421192c457f77ae1779e2023-12-03T09:07:48ZzhoEDP SciencesXibei Gongye Daxue Xuebao1000-27582609-71252023-06-0141345546310.1051/jnwpu/20234130455jnwpu2023413p455Effect of bolt tightening torque on fatigue life of multi-bolted composite structureDONG Jiachen0YANG Zhiyong1ZHENG Xitao2SONG Mingyu3YAN Leilei4School of Aeronautics, Northwestern Polytechnical UniversityAerospace Research Institute of Materials and Processing Technology, China Academy of Launch Vehicle TechnologySchool of Aeronautics, Northwestern Polytechnical UniversitySchool of Aeronautics, Northwestern Polytechnical UniversitySchool of Aeronautics, Northwestern Polytechnical UniversityBolt tightening torque has an influence on the fatigue life of the multi-bolted joints which cannot be ignored, but there are few methods to predict the fatigue life of the multi-bolted composite structure by considering the bolt tightening torque. A fatigue life prediction method of the multi-bolted composite structure by considering the bolt tightening torque is proposed. It can take into account the various damages of bolts and laminates and accurately calculate fatigue life and damage evolution of multi-bolted composite structure. The multi-bolted composite structure being composed of T300/BMP-316 composite laminates and TC4 titanium alloy bolts is used to verify the present method. The logarithmic error between the predicted fatigue life and the experimental is 4.36%, and the failure mode is consistent with the experimental. Through the present method, the influence of the bolt tightening torque is explored, in which it is found that with the increasing of bolt tightening torque, the fatigue life increases firstly and decreases, and there is an optimal tightening torque. By observing the damage evolution diagram, it is found that when the tightening torque is below the optimal tightening torque, the damage propagation cannot be effectively restrained, which will lead to the reduction of fatigue life. On the contrary, when the tightening torque is more than the optimal tightening torque, it will cause the initial damage to the test piece, which will also lead to the reduction of fatigue life. In engineering, to choose the best tightening torque of the structure for assembly can effectively improve the fatigue life of the structure.https://www.jnwpu.org/articles/jnwpu/full_html/2023/03/jnwpu2023413p455/jnwpu2023413p455.html复合材料多钉连接结构疲劳损伤模拟疲劳寿命预测拧紧力矩 |
| spellingShingle | DONG Jiachen YANG Zhiyong ZHENG Xitao SONG Mingyu YAN Leilei Effect of bolt tightening torque on fatigue life of multi-bolted composite structure Xibei Gongye Daxue Xuebao 复合材料 多钉连接结构 疲劳损伤模拟 疲劳寿命预测 拧紧力矩 |
| title | Effect of bolt tightening torque on fatigue life of multi-bolted composite structure |
| title_full | Effect of bolt tightening torque on fatigue life of multi-bolted composite structure |
| title_fullStr | Effect of bolt tightening torque on fatigue life of multi-bolted composite structure |
| title_full_unstemmed | Effect of bolt tightening torque on fatigue life of multi-bolted composite structure |
| title_short | Effect of bolt tightening torque on fatigue life of multi-bolted composite structure |
| title_sort | effect of bolt tightening torque on fatigue life of multi bolted composite structure |
| topic | 复合材料 多钉连接结构 疲劳损伤模拟 疲劳寿命预测 拧紧力矩 |
| url | https://www.jnwpu.org/articles/jnwpu/full_html/2023/03/jnwpu2023413p455/jnwpu2023413p455.html |
| work_keys_str_mv | AT dongjiachen effectofbolttighteningtorqueonfatiguelifeofmultiboltedcompositestructure AT yangzhiyong effectofbolttighteningtorqueonfatiguelifeofmultiboltedcompositestructure AT zhengxitao effectofbolttighteningtorqueonfatiguelifeofmultiboltedcompositestructure AT songmingyu effectofbolttighteningtorqueonfatiguelifeofmultiboltedcompositestructure AT yanleilei effectofbolttighteningtorqueonfatiguelifeofmultiboltedcompositestructure |