导航

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2022, Vol. 43 ›› Issue (3): 225135-225135.doi: 10.7527/S1000-6893.2021.25135

Previous Articles     Next Articles

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

WANG Zhixiang1,2, LEI Yongjun1,2, DUAN Jingbo3, OUYANG Xing4, ZHANG Dapeng1,2, WANG Jie4   

  1. 1. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China;
    2. Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions, Changsha, 410073, China;
    3. Department of Engineering Mechanics, Shijiazhuang Tiedao University, Shijiazhuang 050043, China;
    4. Beijing Institute of Aerospace Systems Engineering, Beijing 100076, China
  • Received:2020-12-22 Revised:2021-04-19 Online:2022-03-15 Published:2021-06-29
  • Supported by:
    National Key R&D Program of China(2017YFB0306200);National Natural Science Foundation of China(11902348);National Science Foundation of Hunan Province(2020 JJ5650);Science Project of the National University of Defense Technology(ZK20-27)

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: