Whirl frequencies and critical speeds of a rotor-bearing system with a cracked functionally graded shaft - Finite element analysis
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- 作者：Debabrata Gayen d.gayen@iitg.ernet.in" class="auth_mail" title="E-mail the corresponding author ; D. Chakraborty ; chakra@iitg.ernet.in" class="auth_mail" title="E-mail the corresponding author ; Rajiv Tiwari rtiwari@iitg.ernet.in" class="auth_mail" title="E-mail the corresponding author
- 关键词：Functionally graded cracked shaft ; Finite element ; Whirl frequency
- 刊名：European Journal of Mechanics - A/Solids
- 出版年：2017
- 出版时间：January-February 2017
- 年：2017
- 卷：61
- 期：Complete
- 页码：47-58
- 全文大小：1848 K
文摘
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Finite element formulation for dynamic characteristics of cracked FG shafts is developed.
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Modified stiffness of cracked FG shaft as a function of gradation index and temperature is computed.
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Whirl frequencies and critical speeds of a rotor-bearing system with a cracked FG shaft depend on power law gradient.
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In an FG shaft, power law gradient could be decided to achieve the desired dynamic characteristics.