重型运载火箭集中力扩散舱段多区域联合设计与优化

doi:10.7527/S1000-6893.2021.25135

Abstract

Abstract: To improve the load-carrying capacity and concentrated-force diffusion performance, a novel integrated design method combining variable profile, proportional layout and multi-region design, along with optimization model based on the static analysis and engineering estimat method is proposed for the optimal design of the concentrated-force diffusion component in the heavy-lift launch vehicle.parametric finite element model is for the concentrated-force diffusion component, of which the load-carrying capacity and concentrated-force diffusion performance are analyzed.According to the structural form and load-carrying characteristic of the concentrated-force diffusion component, an integrated design method of variable thickness, variable profiles and proportional layout is proposed for the detailed design.To comprehensively improve the load-carrying capacity and concentrated-force diffusion performance, an optimization model based on the static analysis and engineering estimat method is solved by the simulated annealing method, thereby an optimized structure with weight reduction.The comparison results show that it beneficial to improve the load-carrying efficiency and concentrated-force diffusion performance the auxiliary-beams/stringers on both sides of the strap-on devices densely close to strap-on devices the auxiliary-beams between strap-on devices densely far away from strap-on devices, main-beams with variable profile and skin with variable thickness.The effectiveness and superiority of the proposed integrated design method and optimization model are validated for the prospect of engineering application.

Key words: heavy launch vehicles, concentrated-force diffusion component, concentrated-force diffusion, ultimate load-carrying capacity, integrated design method, non-uniformity of concentrated-force diffusion

CLC Number:

WANG Zhixiang, LEI Yongjun, DUAN Jingbo, OUYANG Xing, ZHANG Dapeng, WANG Jie. Multi-region integrated design and optimization of concentrated-force diffusion component in heavy-lift launch vehicle[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(3): 225135-225135.

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Multi-region integrated design and optimization of concentrated-force diffusion component in heavy-lift launch vehicle

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