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1.上海机电工程研究所,上海 201109
2.南京航空航天大学 航天学院,南京 210016
周迪,男,1994年生,江苏常熟人,博士,工程师;主要研究方向为发射装置设计与动力学仿真分析;E-mail:15151775928@163.com。
收稿日期:2023-12-19,
修回日期:2024-03-03,
纸质出版日期:2025-08-15
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周迪,周元春,王惠娟,等. 冷发射模式下发射车动力学建模与响应特性研究[J]. 机械强度,2025,47(8):101-107.
ZHOU Di,ZHOU Yuanchun,WANG Huijuan,et al. Research on response characterstic and dynamic modeling of launch vehicle under the cold launch mode[J]. Journal of Mechanical Strength,2025,47(8):101-107.
周迪,周元春,王惠娟,等. 冷发射模式下发射车动力学建模与响应特性研究[J]. 机械强度,2025,47(8):101-107. DOI: 10.16579/j.issn.1001.9669.2025.08.012.
ZHOU Di,ZHOU Yuanchun,WANG Huijuan,et al. Research on response characterstic and dynamic modeling of launch vehicle under the cold launch mode[J]. Journal of Mechanical Strength,2025,47(8):101-107. DOI: 10.16579/j.issn.1001.9669.2025.08.012.
为准确模拟冷发射模式下发射装置内部复杂的载荷传递关系,基于刚柔耦合动力学仿真方法分析车载发射系统在发射载荷下的动态响应,校验结构强度。在采用刚体和模态柔性体的基础上引入有限元柔性体,构建了某型发射车刚柔耦合动力学仿真模型。结合实车冷发射试验数据验证了模型的准确性,并进一步分析了不同发射角度对发射装置振动响应与应力状态的影响规律。结果表明,发射角度接近90°有助于减小发射装置内的载荷传递、降低发射筒附近结构的应力幅值。该研究所采用的建模与分析方法可为发射装置的改进设计提供参考。
To accurately simulate the complicated load transfer pattern of the launch device under cold launch mode
the rigid-flexible coupling dynamic simulation method was adopted to analyze the dynamic response of a launch vehicle
the structural strength was also verified. The finite element flexible body was introduced and a multi-rigid-flexible-body dynamic simulation model of a launch vehicle was constructed. Accuracy of the model was verified by the actual launch test. The influence law between the vibration response and stress state of the launch vehicle and the launch angle was further analyzed. The results show that amplitudes of the transmitted load and stress inside the launcher will reduce when the launch angle is close to 90°. The modeling and analysis approaches proposed in this study can effectively support the optimal design of the launch device.
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