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Multi-state Model Updating based on Simplified Rocket Model
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Jiazheng DU1, Zhe WANG1, 2, Xingchen LI1
Missiles and Space Vehicles | 2024, 47(3) : 21 - 28
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Missiles and Space Vehicles | 2024, 47(3): 21-28
• Launch Vehicle and Missile •
Multi-state Model Updating based on Simplified Rocket Model
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Jiazheng DU1, Zhe WANG1, 2, Xingchen LI1
Affiliations
  • 1Beijing University of Technology,Beijing,100124
  • 2The 45th Research Institute of China Electronics Technology Group Corporation,Beijing,100176
Published: 2024-06-25 doi: 10.7654/j.issn.2097-1974.20240304
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The continuous reduction of fuel during the rocket launch causes the rocket structure to change continuously, and the natural frequency and modal shape of the structure also change accordingly. Aiming at the inaccuracy of the finite element model, the moment of inertia of the section is used as the correction parameter, and the minimum error between the numerical simulation results and the experimental test results under different states is the objective function, and an optimization model for multi-state model correction is established. The objective function is explicitly processed by sensitivity analysis and first-order Taylor expansion, and the optimal solution of design variables is obtained by sequential linear programming. At the same time, for the multi-state structure, taking the multi-section simply supported beam model as an example, the simply supported beam is tested by the hammering method, and the magnetic attraction weight scheme is designed to simulate the multi-state model. An optimization model is established for the objective function, and the multi-section simply supported beam model is revised to a single-section simply supported beam model after modification, and the ratio of the moment of inertia of the section to the area is met, which verifies the accuracy of the multi-state model modification method.

multi-state model updating  /  section moment of inertia  /  optimal design  /  simplified rocket model  /  finite element analysis
Jiazheng DU, Zhe WANG, Xingchen LI. Multi-state Model Updating based on Simplified Rocket Model[J]. Missiles and Space Vehicles, 2024 , 47 (3) : 21 -28 . DOI: 10.7654/j.issn.2097-1974.20240304
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Year 2024 volume 47 Issue 3
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Article Info
doi: 10.7654/j.issn.2097-1974.20240304
  • Receive Date：2022-05-05
  • Online Date：2025-07-04
  • Published：2024-06-25
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  • Received：2022-05-05
  • Revised：2023-11-30
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Affiliations
    1Beijing University of Technology,Beijing,100124
    2The 45th Research Institute of China Electronics Technology Group Corporation,Beijing,100176
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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