MATEC Web Conf.
Volume 108, 20172017 International Conference on Mechanical, Aeronautical and Automotive Engineering (ICMAA 2017)
|Number of page(s)||5|
|Section||Material Analysis and Processing|
|Published online||31 May 2017|
Contact stress analysis and optimization of single crystal turbine blade tenon/disk mortise structure considering thermal-solid coupling
1 Department of Engineering Mechanics, Northwestern Polytechnical University (Chang’an Campus), Xi’an 710129, P.R. China
2 Institute of Shanghai Satellite Engineering, Shanghai 201100, P.R. China
Contact stress analysis and optimization design of single crystal turbine blade tenon/disk mortise structure considering thermal-solid coupling is proposed in this paper. Contact thermal conductivity analysis of turbine blade/disk mortise structure is carried out to obtain temperature distribution. Contact stress of mortise structure considering temperature influence is analyzed by FEM method. On basis of contact stress analysis, the optimization design method considering thermal-solid coupling is proposed. Broaching angle, wedge angle and gap distance are chosen as optimization design variables. The minimum Mises stress, average tensile stress and average compressive stress are chosen as optimization objectives. A three fir tree tenon/mortise structure is optimized to decrease the maximum Mises stress 14% by proposed method.
© The Authors, published by EDP Sciences, 2017
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