|Table of Contents|

Structure design of main mounting in ramjet engine base on topology optimization(PDF)

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

Issue:
2022年05期
Page:
54-60
Research Field:
目次
Publishing date:

Info

Title:
Structure design of main mounting in ramjet engine base on topology optimization
Author(s):
SHI Bo;  YANG Guangjie;  DAI Jin;  ZHOU Jie;  FAN Genmin
(Xian Aerospace Propulsion Institute, Xian 710100, China)
Keywords:
ramjet engine engine mounting joint concentrated force diffusion topology optimization
PACS:
V431
DOI:
-
Abstract:
In order to optimize the load-bearing structure of the main mounting joint in ramjet engine,the structure design of concentrated force diffusion was carried out.Firstly, the radial rib structure was designed by engineering method, and then the topology optimization was carried out.The constraint condition of internal force uniformity suitable for the diffusion structure was verified by the optimization example of plate structure.The global coarse mesh model was used to get the design domain and the fine mesh model was used to optimize structure, and the final scheme was obtained through two rounds of optimization iterations.Through the comparison between the engineering design method and the topology optimization method, it is proved that the topology optimization method is more suitable to deal with the concentrated force diffusion structure with multi-directions and multi-condition loads.Compared with the radial rib scheme, the topology optimization scheme can reduce the structural mass by 2.6, the maximum deformation under the maximum load(case 3)by 4.4, the maximum stress by 10, and the effect of concentrated force diffusion is better.The effectiveness of this method has been proved, which provides a practical design idea and method for the structure optimization of concentrated force diffusion.

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