|Table of Contents|

Investigation on the structural characteristics of the weave net of metal flexible joint used in liquid rocket engine(PDF)

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

Issue:
2019年03期
Page:
48-53
Research Field:
研究与设计
Publishing date:

Info

Title:
Investigation on the structural characteristics of the weave net of metal flexible joint used in liquid rocket engine
Author(s):
ZHAO Jian1; 2;  WU Xiaoxin1;  QIN Hongqiang1;  MA Jian1
(1.Xi'an Aerospace Propulsion Institute,Xi'an 710100, China;2.Science and Technology on Liquid Rocket Engines Laboratory, Xi'an 710100, China)
Keywords:
liquid rocket engine;  weave net;  nonlinear FEM;  enhancement mechanism
PACS:
V434.2
DOI:
-
Abstract:
In order to investigate the enhancement mechanism of weave net which is used as the enhanced part of the flexible metal hose of liquid rocket engine, the tensile tests were conducted.Based on the APDL language, the modeling and nonlinear finite element method(FEM)analysis were fully programmed.The computational results agreed well with the tensile test results, which proofed that the model and analysis methods were reasonable and feasible.The mutual effects between weave net, bellows and armoured ring under internal pressure were obtained, as well as the enhancement mechanism.The theoretical analysis methods based on FEM results were proposed to analyze the enhancement capacity quantitatively and check the intensity of the weave net, which established the relationships between the radial displacements, hoop stress, equivalent pressure, and frictional resistance.Results shows that the weave net can share 20% of internal pressure 10 MPa, and weave net is in the state of elastic deformation.The additional frictional force caused by contact between weave net and armoured ring is more than 50 kN, which may increase the burden of servo mechanism.

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Last Update: 2019-06-30