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research-article

A method to analyze the contact stress of dovetail attachments in aeroengine

[+] Author and Article Information
Shuo Zhang

School of Energy and Power Engineering, Beihang University, Beijing, China, 100083
841681288@qq.com

Xiuli Shen

School of Energy and Power Engineering, Beihang University, Beijing, China, 100083
dshj0321@163.com

Shaojing Dong

School of Energy and Power Engineering, Beihang University, Beijing, China, 100083
shxl606@163.com

Ye Zhang

AECC Commercial Aircraft Engine Co., Ltd., Shanghai, China, 201103
15776997@qq.com

Wentong Hu

School of Energy and Power Engineering, Beihang University, Beijing, China, 100083
kklt7072@163.com

1Corresponding author.

ASME doi:10.1115/1.4040684 History: Received April 11, 2018; Revised June 20, 2018

Abstract

Finite element method has been used to find out the fundamental reason of shape function due to the non-convergence of stress in calculating the trapezoidal tooth dovetail attachments of aeroengine. We have used two different methods, representing actual models, for the calculation of contact stress. Comparative analysis of these methods, and the already reported ones, led us to conclude that the displacement extraction method is better and efficient for the engineering applications. This method was successively applied to contact model of indenter with shaped edge, a model with an inclined contact surface and dovetail attachment model, while these stress results are compared with that of photoelastic. Moreover, we found that the photoelastic and displacement error in extraction method is small and the method can be widely used for the calculation of structural stress with sharp edge.

Copyright (c) 2018 by ASME
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