Dynamics Modeling and Characterization of Sunk Screw Connection Structure in Small Rockets
Bolted flange joints are widely used in engineering structures. Sunk screw connection structures commonly used in small rockets and missiles exhibit significant nonlinear characteristics when subjected to forces. In this article, a study of the dynamic characteristics of sunk screw connection is con...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Aerospace |
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| Online Access: | https://www.mdpi.com/2226-4310/9/11/648 |
| _version_ | 1797469545303113728 |
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| author | Xiaotian Zhang Ruiqing Wang Xiaogang Li Chengyang Lu Zhengkang Wang Wenlong Wang |
| author_facet | Xiaotian Zhang Ruiqing Wang Xiaogang Li Chengyang Lu Zhengkang Wang Wenlong Wang |
| author_sort | Xiaotian Zhang |
| collection | DOAJ |
| description | Bolted flange joints are widely used in engineering structures. Sunk screw connection structures commonly used in small rockets and missiles exhibit significant nonlinear characteristics when subjected to forces. In this article, a study of the dynamic characteristics of sunk screw connection is conducted. A 3-dof trilinear dynamic model is proposed, based on the study of the stiffness characteristics of the connection structure and considering contact nonlinearities. The connection surface is simplified as two axial trilinear springs and a lateral linear spring. The motion of the system can be divided into nine regions by the turning point of the trilinear springs. So that the motion of the system in each region can be completely resolved, the dynamic characteristics of the 3-dof trilinear system under impulse load and simple harmonic load are studied by means of semi-numerical analytical method. It is found that the response frequency of the system remains unchanged under a small impulse load, and the response can be obtained by approximate analytical expressions. When the impulse load is large, the response frequency is fluctuant, which reflects the sensitivity of the nonlinear system to the magnitude of impulse load. Under the simple harmonic excitation of bending moment, the response frequency curve of the system presents good single peak characteristics when the excitation amplitude is small. When the amplitude is large, the peak frequency of the system shifts, and the phenomenon of multi-peak resonance is shown in a certain range. |
| first_indexed | 2024-03-09T19:21:53Z |
| format | Article |
| id | doaj.art-4ff55f223b344808bc471416ee5ecf29 |
| institution | Directory Open Access Journal |
| issn | 2226-4310 |
| language | English |
| last_indexed | 2024-03-09T19:21:53Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Aerospace |
| spelling | doaj.art-4ff55f223b344808bc471416ee5ecf292023-11-24T03:15:08ZengMDPI AGAerospace2226-43102022-10-0191164810.3390/aerospace9110648Dynamics Modeling and Characterization of Sunk Screw Connection Structure in Small RocketsXiaotian Zhang0Ruiqing Wang1Xiaogang Li2Chengyang Lu3Zhengkang Wang4Wenlong Wang5School of Astronautics, Beihang University, Beijing 100191, ChinaSchool of Astronautics, Beihang University, Beijing 100191, ChinaScience and Technology on Space Physics Laboratory, Beijing 100076, ChinaSchool of Astronautics, Beihang University, Beijing 100191, ChinaScience and Technology on Space Physics Laboratory, Beijing 100076, ChinaBeijing Institute of Spacecraft System Engineering, Beijing 100094, ChinaBolted flange joints are widely used in engineering structures. Sunk screw connection structures commonly used in small rockets and missiles exhibit significant nonlinear characteristics when subjected to forces. In this article, a study of the dynamic characteristics of sunk screw connection is conducted. A 3-dof trilinear dynamic model is proposed, based on the study of the stiffness characteristics of the connection structure and considering contact nonlinearities. The connection surface is simplified as two axial trilinear springs and a lateral linear spring. The motion of the system can be divided into nine regions by the turning point of the trilinear springs. So that the motion of the system in each region can be completely resolved, the dynamic characteristics of the 3-dof trilinear system under impulse load and simple harmonic load are studied by means of semi-numerical analytical method. It is found that the response frequency of the system remains unchanged under a small impulse load, and the response can be obtained by approximate analytical expressions. When the impulse load is large, the response frequency is fluctuant, which reflects the sensitivity of the nonlinear system to the magnitude of impulse load. Under the simple harmonic excitation of bending moment, the response frequency curve of the system presents good single peak characteristics when the excitation amplitude is small. When the amplitude is large, the peak frequency of the system shifts, and the phenomenon of multi-peak resonance is shown in a certain range.https://www.mdpi.com/2226-4310/9/11/648bolted jointdynamic modelingnonlinear systemdynamics characteristics |
| spellingShingle | Xiaotian Zhang Ruiqing Wang Xiaogang Li Chengyang Lu Zhengkang Wang Wenlong Wang Dynamics Modeling and Characterization of Sunk Screw Connection Structure in Small Rockets Aerospace bolted joint dynamic modeling nonlinear system dynamics characteristics |
| title | Dynamics Modeling and Characterization of Sunk Screw Connection Structure in Small Rockets |
| title_full | Dynamics Modeling and Characterization of Sunk Screw Connection Structure in Small Rockets |
| title_fullStr | Dynamics Modeling and Characterization of Sunk Screw Connection Structure in Small Rockets |
| title_full_unstemmed | Dynamics Modeling and Characterization of Sunk Screw Connection Structure in Small Rockets |
| title_short | Dynamics Modeling and Characterization of Sunk Screw Connection Structure in Small Rockets |
| title_sort | dynamics modeling and characterization of sunk screw connection structure in small rockets |
| topic | bolted joint dynamic modeling nonlinear system dynamics characteristics |
| url | https://www.mdpi.com/2226-4310/9/11/648 |
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