|Table of Contents|

Compression strength analysis of the reinforced S-shaped bellows(PDF)

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

Issue:
2019年01期
Page:
19-24
Research Field:
研究与设计
Publishing date:

Info

Title:
Compression strength analysis of the reinforced S-shaped bellows
Author(s):
XU Xuejun1;  REN Wu2;  YUAN Zhe2;  XU Hanle2;  ZHU Weiping3
(1.Science and Technology on Liquid Rocket Engine Laboratory, Xi'an 710100, China; 2.Northwestern Polytechnical University, Xi'an 710129, China; 3.Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China)
Keywords:
reinforced S-shaped bellows;  compression strength;  mesh density
PACS:
V475
DOI:
-
Abstract:
For the reinforced S-shaped bellows in the fuel swing device of a liquid rocket engine, the theoretical analysis and numerical simulation are used to study its compression strength.The research shows that the finite element model of the reinforced S-shaped bellows for the pressure resistance analysis must be defined as a layered model, becase the simplified single layer model may lead to larger errors.Reasonable selection of the mesh density of the finite element model can not only effectively ensure the accuracy of the compression strength,but also reduce the computing time.Under the condition that the material, total thickness, wave shape and other parameters of the bellows are constant, appropriately increasing the number of bellows layers can increase the radial stiffness and reduce the axial stiffness.

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Last Update: 2019-02-20