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Study on Impeller Fracture Model Based on Vibration Characteristics and Fractal Theory
Joint Authors
Zhang, Xiaolong
Yuan, Ruishan
Xie, Yonghui
Source
Advances in Mathematical Physics
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-05-05
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
During the operation of centrifugal compressor, failure easily occurs in the presence of complicated external forces.
The failure process characterizes with strong nonlinearity, and hence it is difficult to be described by conventional methods.
In this paper, firstly, the cracks in different positions are described using crack fractal theory.
The basic failure modes of the impeller are summarized.
Secondly, a three-dimensional finite element model of the impeller is constructed.
Then the von Mises stress under the centrifugal force is calculated, and the corresponding impeller failure process is simulated by “element life and death technology” in ANSYS.
Finally, the impeller failure mechanism is analyzed.
It can be found that the static stress is not the main cause of the impeller failure, and the dynamic characteristics of the impeller are not perfect because of the pitch vibration modes which appeared in the investigated frequency range.
Meanwhile, the natural frequency of the impeller also cannot avoid the frequency of the excitation force.
American Psychological Association (APA)
Zhang, Xiaolong& Yuan, Ruishan& Xie, Yonghui. 2015. Study on Impeller Fracture Model Based on Vibration Characteristics and Fractal Theory. Advances in Mathematical Physics،Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1053014
Modern Language Association (MLA)
Zhang, Xiaolong…[et al.]. Study on Impeller Fracture Model Based on Vibration Characteristics and Fractal Theory. Advances in Mathematical Physics No. 2015 (2015), pp.1-9.
https://search.emarefa.net/detail/BIM-1053014
American Medical Association (AMA)
Zhang, Xiaolong& Yuan, Ruishan& Xie, Yonghui. Study on Impeller Fracture Model Based on Vibration Characteristics and Fractal Theory. Advances in Mathematical Physics. 2015. Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1053014
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1053014