|Table of Contents|

Lightweight design method of transmission frame structure considering the overhang constraint of additive manufacturing(PDF)

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

Issue:
2023年04期
Page:
26-35
Research Field:
目次
Publishing date:

Info

Title:
Lightweight design method of transmission frame structure considering the overhang constraint of additive manufacturing
Author(s):
YE Shurui1;  HAO Wenyu1;  SUN Zhi1; 2;  GUO Xu1; 2
(1.State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China; 2.Ningbo Institute of Dalian University of Technology, Ningbo 315016, China)
Keywords:
topology optimization;  additive manufacturing;  lightweight;  frame;  moving morphable component
PACS:
V421.4
DOI:
-
Abstract:
The transmission frame structure of lunch vehicles is the key connecting part which transmits the thrust load of the engine to the rocket body. The lightweight optimization of the transmission frame structures with a relatively large mass can effectively improve the thrust weight ratio of the lunch vehicles, realize the high-efficiency bearing of the structure and stable production by additive manufacturing technology. In this paper, based on the framework of moving morphable component(MMC)and considering the overhang constraint in additive manufacturing, a lightweight design method of lunch vehicle transmission frame structure was proposed. This method can consider the design requirements such as stiffness, mass, design space and manufacturing constraints, and maximize the structural stiffness under the constraint of limiting the weight(volume)of the structure. This paper deduces the formulation of related optimization problems, gives the optimization process, and shows some typical examples. Finally, through the analysis of the optimization results, the optimization results meet the stiffness requirements of the transmission frame structure of the launch vehicle engine and the maximum stress requirements of the transmission frame material, which have significant advantages over the traditional frame structure in terms of quality. There is no large cantilever structure in the optimization results, and the suspension constraints unique to additive manufacturing are satisfied, which proves the effectiveness of this method.

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