Study on the Relationship between the Diameter and the Stress Concentration

Abstract:

In order to find out how much a relief groove can change the stress distribution in a shaft, In this paper, finite element technology and test technique have been used to study the stress concentration dates caused by a escape by different shaft models. Their diameters are all less than M30mm. The research solutions show that the stress concentration coefficients caused by the escapes grow with the increase of the diameters. The pressure on the shaft should be reduced to about 0.68 times of the normal one so that the shafts have the same lifetime as before. Stress concentration coefficient is the only parameter to estimate the stress concentration degree. The calculate dates were compared with the test one in this paper in order to check the models accuracy. The conclusions show that the error rate is less than 5%.It can be taken as a new method to replace the destructive test in the design products.

• Periodical: Advanced Materials Research (Volumes 915-916)
• Pages: 165-168
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.915-916.165
• Online since: April 2014
• Authors: Jian Qin Zhao, Zhi Wang
• Keywords: Finite Element, Relief Groove, Strength, Stress Concentration, Stress Concentration Coefficient

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