Modal Analysis of Bleed Air System based on NASTRAN

DOI

10.2991/icadme-15.2015.54How to use a DOI?

Keywords

Bleed air system, Modal analysis, NASTRAN.

Abstract

Based on the analysis of structure composition, material properties, operating conditions of bleed air system, a finite element model is developed and the natural frequencies and vibration modes are obtained by NASTRAN. The results show that the first ten natural frequencies comparatively dense, each order natural frequency in operating state are lower than the corresponding frequency in non-operating state. The deformations are mainly concentrated in the APU pipe and the two branches arranged with concentrated mass components, and the maximum deformation positions under the two states are different in the same order. This work can assist in design of civil-aircraft bleed air system and similar high temperature and high pressure duct system.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Juan Liu
PY  - 2015/10
DA  - 2015/10
TI  - Modal Analysis of Bleed Air System based on NASTRAN
BT  - Proceedings of the 5th International Conference on Advanced Design and Manufacturing Engineering
PB  - Atlantis Press
SP  - 272
EP  - 277
SN  - 2352-5401
UR  - https://doi.org/10.2991/icadme-15.2015.54
DO  - 10.2991/icadme-15.2015.54
ID  - Liu2015/10
ER  -