|Table of Contents|

Topology optimization design of integrated bracket with embedded pipelines for additive manufacturing(PDF)

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

Issue:
2023年04期
Page:
36-42
Research Field:
目次
Publishing date:

Info

Title:
Topology optimization design of integrated bracket with embedded pipelines for additive manufacturing
Author(s):
YUAN Diye1;  LYU Yuchao2;  LI Zhili2;  ZHOU Ying1;  GAO Tong1;  LIANG Shuqiang2;  ZHANG Weihong1
(1. State IJR Center of Aerospace Design and Additive Manufacturing, Northwestern Polytechnical University, Xi'an 710072, China; 2. Xi'an Aerospace Propulsion Institute, Xi'an 710100, China)
Keywords:
integrated bracket;  embedded pipelines;  structure optimization;  topology optimization;  additive manufacturing
PACS:
V431
DOI:
-
Abstract:
Aiming at the lightweight design problem for the spaceborne engine integrated bracket to meet simultaneously the fluid flow, load bearing and manufacturing requirements, an additive manufacturing oriented topology optimization design process of structures with embedded pipelines was proposed. The design model was established where the functional surface of the pipelines was retained as the non-designable region. The main load-transmission path was obtained by topology optimization for lightweightness and high performance. The final structure was obtained by model reconstruction based on the optimized configuration. The printing angle for additive manufacturing was determined to ensure the inner surface quality of embedded pipelines. A full-size structure was additively manufactured and the removal of support structures was analyzed. It is shown that the manufacturing quality of embedded pipelines, the strength and stiffness of integrated bracket all meet the design requirements. The support structure can be easily removed and the manufacturing processability is good. A significant mass reduction of 40.6% is obtained compared with original structure.

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