| 张浩成,支亚非,李永刚,徐焱.舰载飞机弹射动力学仿真与试验验证[J].装备环境工程,2022,19(9):46-53. ZHANG Hao-cheng,ZHI Ya-fei,LI Yong-gang,XU Yan.Dynamic Simulation and Experimental Verification of Carrier-based Aircraft[J].Equipment Environmental Engineering,2022,19(9):46-53. |
| 舰载飞机弹射动力学仿真与试验验证 |
| Dynamic Simulation and Experimental Verification of Carrier-based Aircraft |
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| DOI：10.7643/issn.1672-9242.2022.09.008 |
| 中文关键词: 舰载飞机 弹射起飞 刚柔耦合 冲击动响应 冲击试验 结构强度中图分类号:V214.1 TJ85 文献标识码:A 文章编号:1672-9242(2022)09-0046-08 |
| 英文关键词:carrier-based aircraft catapult launch rigid-flexible coupling impact dynamic response impact experiment structural strength |
| 基金项目: |
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| Author | Institution |
| ZHANG Hao-cheng | Chengdu Aircraft Industry Group CO., Ltd., Chengdu 610000, China |
| ZHI Ya-fei | Chengdu Aircraft Industry Group CO., Ltd., Chengdu 610000, China |
| LI Yong-gang | Chengdu Aircraft Industry Group CO., Ltd., Chengdu 610000, China |
| XU Yan | Chengdu Aircraft Industry Group CO., Ltd., Chengdu 610000, China |
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| 中文摘要: |
| 目的 获取舰载飞机弹射过程中冲击动载荷在结构上的响应规律，以及前起落架和与其连接的机体主传力结构的动响应特性。方法 基于多体系统动力学理论，建立描述舰载机弹射过程的刚柔耦合多体系统动力学模型，对弹射过程进行仿真分析。同时开展地面模拟弹射冲击试验，通过仿真和试验对照，重点研究牵制载荷突卸瞬间结构的动态响应规律。结果 仿真和试验得到结构传力路径各点的加速度和应力响应数据，试验测得机体结构加速度峰值达到255g，而同位置的应力峰值为85 MPa，仿真和试验数据的趋势一致。结论 牵制载荷突卸形成的冲击动响应峰值沿着结构传力路径衰减。航向加速度和应力响应峰值随着牵制释放载荷的增加而增加。虽然瞬态加速度峰值达到较高水平，但是瞬态作用机体结构的应力峰值不高，不足以造成结构失效。结构设计应重点关注弹射冲击响应峰值和振动疲劳的影响。 |
| 英文摘要: |
| In order to obtain the response law of dynamic load on the structure and the dynamic response characteristics of the front landing gear and the body structure connected with it during the shooting process of carrier-based aircraft, based on the multi-body system dynamics theory, this paper established a rigid-flexible coupling multi-body system dynamics model to describe the ejection process of the carrier-based aircraft fuselage. The ejection process was simulated and analyzed. Combined with the simulation ejection impact experiment, the dynamic response law of the structure at the moment of the traction load unloading was mainly studied. The acceleration and stress response data of each point in the force transmission path of the structure were obtained by simulation and experiment. The peak acceleration of the body structure measured by experiment reached 255g, while the peak stress at the same position was 85 MPa. The trend of simulation and experimental data were consistent. The results showed that the peak value of the impact dynamic response formed by the sudden unloading of the traction load attenuated along the force transmission path of the structure, and the peak value of heading acceleration response increased with the increase of traction release load at the moment of traction rod fracture. Although the peak value of transient acceleration reached a high level, the peak value of structural stress under transient action was not high enough to cause structural failure. The structural design should focus on the impact of the corresponding peak and vibration fatigue. |
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