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| Finite element analysis of disc spring compression of lubricating for aviation-engine oil pump assembly |
| WANG Yong1*, ZHANG Xu1, WANG Xiaolin1,DONG Yun2 |
| 1. National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2. Key Laboratory of Power Transmission Technology on Aero-engine, Aero Engine Corporation of China, Shenyang, Liaoning 110015, China |
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Abstract To ensure the stable compression of the key components of the lubricating oil pump assembly, such as the port plate and the eccentric pump body, as well as the safety of the pump cover, according to the GB/T 1972—2005 standard, two single-piece disc springs to be installed on the lubricating oil pump assembly in an accurate alignment method. Considering the potential impact of thermal deformation in the temperature field, a thermal-solid coupled method was used to perform finite element analysis of the lubricating oil pump set based on the Workbench platform under different initial compression amounts(0.6, 0.7, 0.8, 0.9 mm)of the disc springs. The results show that when the initial compression amount is less than 0.7 mm, the main components of the lubricating oil pump receive a smaller compressive force and are mainly affected by the circumferential thrust of the oil. As the initial compression amount increases from 0.7 mm to 0.9 mm, the deformation of the pre-compressed end shows a corresponding increase trend. At the same time, the axial force borne by the baffle of the oil pump body also exhibits a linear growth characteristic with the increase of compression. In this process, the axial thrust of the port plate and the eccentric pump body gradually increases with the increase of compression, ensuring that they can be effectively compressed and the pump cover remains intact and undamaged. This study not only provides a theoretical basis for the initial installation of the oil pump assembly, but also helps guide the installation operation in practical engineering applications, thus ensuring the normal operation and service life of the lubricating oil pump assembly.
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Received: 21 April 2022
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