Vibration Analysis of a Blood Processor Centrifuge with Anti-Twister Mechanism

Document Type

Article

Publication Date

1-1-1991

Abstract

This paper deals with the vibration analysis of a blood processor centrifuge with an anti-twister mechanism. Blood processors that employ anti-twister mechanisms are becoming increasingly popular because they cause relatively less damage to the blood than the conventional ones, which employ rotating seals. Knowledge of the vibration response of the device in its operating regime is important for trouble-free operation. A simple, three-degree-of-freedom, lumped-parameter, torsional-mode model is presented here. This model was used to analyse an existing blood processor. On comparing experimental and analytical values, it was found that the fundamental frequency as predicted analytically is within 19 per cent of the experimental value; the predicted second harmonic is about 28 per cent higher than the experimental one. Thus the proposed model predicts the fundamental frequency with reasonable accuracy. In design, the goal is to keep the operating frequency of the device sufficiently above the fundamental frequency to avoid resonance problems. © 1991, Institution of Mechanical Engineers. All rights reserved.

Identifier

0026287683 (Scopus)

Publication Title

Proceedings of the Institution of Mechanical Engineers Part H Journal of Engineering in Medicine

External Full Text Location

https://doi.org/10.1243/PIME_PROC_1991_205_274_02

e-ISSN

20416518

ISSN

09544119

PubMed ID

1840726

First Page

95

Last Page

99

Issue

2

Volume

205

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