|Table of Contents|

Structural topology optimization of vibration test fixture for orbit and attitude control engines(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2023年01期
Page:
93-102
Research Field:
目次
Publishing date:

Info

Title:
Structural topology optimization of vibration test fixture for orbit and attitude control engines
Author(s):
ZHANG Yuntao;  XUE Jie;  SONG Shaowei;  WU Dan;  LIU Jianzhao
(Xian Aerospace Propulsion Institute,Xian 710100,China)
Keywords:
orbit and attitude control engine block fixture cone fixture multi-objective topology optimization natural frequency vibration test
PACS:
V434.3
DOI:
-
Abstract:
Aiming at the problems of some vibration test fixture of orbit and attitude control engines,such as large mass, low frequency characteristic, the topology optimization method was adopted to improve the structure design of typical test fixture.Based on the topology optimization module of Optistruct software, the dynamic topology optimization model and multi-objective optimization strategy were discussed, and the setting of optimization control parameters such as dispersion parameters(DISCRETE)and minimum member size(MINDIM)was introduced.Based on the topology optimization of block test fixture of thrust device, the influence of optimization objectives and control parameters on optimization results was studied.The optimized fixture frequency characteristics meet the test requirements, and the weight reduction effect is obvious.The fixture control response under sinusoidal and random vibration test conditions is verified to be stable and effective, and meets the tolerance requirements of the test.Finally, by improving the design of cone test fixture of a certain orbit and attitude control engine, the topology optimization method is further extended and applied.The simulation results show that the modal frequency and dynamic response characteristics of the optimized fixture are significantly improved, which provides reference and guidance for the design of vibration test fixture.

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