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Abstract: For the rotor system, the existence of the crack on the shaft influences the stiffness of the system, and in further the dynamic performance. General stiffness models are summarized for the cracked shaft and gives out two new methods to obtain the stiffness. Because of the different theories among the general models and two new methods, the opening areas of the crack on the shaft and the stiffness of the shaft will be different accordingly. Through comparing with the experimental stiffness, it is found that the stiffness obtained by one of the new methods is more useable.
Key words: Rotor Stiffness Neutral axis Stress intensity factor
CLC No:
TB122
国家杰出青年科学基金(50425516)和国家高技术研究发展计划(863计划，2006AA04Z438)资助项目.
Received
20070305,
received
in
revised
form
20070915
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