基于结构优化方法的气瓶支架轻量化设计

doi:10.7527/S1000-6893.2017.221267

Abstract

Abstract: To improve material efficiency and simplify manufacturing and assembling processes of the bracket, which is used for mounting the gas cylinder on the satellite, the structural analysis and optimization method is studied to design a lightweight metal bracket with simple configuration. Firstly, the space and the best load path for the bracket are defined based on the variable density method after analysis of the assembly relationship as well as related loads and boundary conditions. The basic geometry model is reconstructed according to the topology optimization results and the best feature sizes of the geometry model are obtained via size optimization method. Secondly, the detailed geometry model is designed and several mechanical performances of the bracket, including stiffness, strength and stability, are analyzed. Thirdly, the stiffness of the bracket is tested by modal test, and the test results are in good agreement with the analysis results. Therefore, the accuracy of the mechanical analysis and the design rationality of the bracket are verified. The proposed lighter bracket reduces structures mass by 17%, and the new design not only satisfies the usage requirements on the satellite but also simplifies the manufacturing and assembling processes. It is shown that the structural design method proposed is effective for reducing the structure weight, and can be used for lightweight design of similar structure.

Key words: satellite, gas cylinder, lightweight, optimization design, verification

CLC Number:

V423

LI Xiufeng, GAO Lingfei, WANG Haopan. Lightweight design of bracket for supporting gas cylinder based on structural optimization method[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(12): 221267-221267.

References

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Lightweight design of bracket for supporting gas cylinder based on structural optimization method

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