Stress Analysis of Interference Fitted Shaft-Hub Joints

• Main Authors: Shu-Hsuan Chang, 張書軒
• Other Authors: Ting-Chiang-Tsai
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/47mvmf

碩士 === 國立臺北科技大學 === 機電整合研究所 === 100 === Interference-fit used widely in current industry, shaft and hub are two main mechanical components. The article is to study the stress state of shaft and hub in interference-fit situation, using 3D graphics software modeling and matching computer-aided engineering (CAE) software analysis. This study divided into static and dynamic parts. Static analysis for direct display interference-fit status, the main purpose is to reduce the stress concentration at both ends of shaft and hub, through changing the geometric shape of shaft ends of the research is able to effectively reduce the stress concentration effect and maintain the amount of torque. Dynamic analysis for simulation of the actual processing and assembly shaft by exert force pressed into the hub, using analysis software to calculate the reaction and use of heating and cooling the shaft and hub, come to understand at which temperature difference conductive to assembly. By the analysis result was informed that the distribution effect of stress concentration as the shape changes, contact pressure will affect the amount of torque. Stepped shaft and rounded shaft better ways to improve the stress concentration effect, the ratio of stepped shaft dc/d below 0.87 is better to reduce stress concentration, the bore and outside diameter ratio d/D should be avoided as far as possible too small, otherwise it will ineffective to heating assembly.