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Appl. Sci. 2017, 7(3), 298; doi:10.3390/app7030298

Modeling and Finite Element Analysis of Load-Carrying Performance of a Wind Turbine Considering the Influence of Assembly Factors

1
School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China
2
Department of Electrical, Electronic & Computer Engineering, University of Pretoria, Pretoria 0002, South Africa
3
School of Mechatronic Engineering, China University of Mining Technology, Xuzhou 221116, China
4
School of Manufacturing & Mechanical Engineering, UNSW, Sydney 2200, Australia
*
Authors to whom correspondence should be addressed.
Received: 3 February 2017 / Revised: 28 February 2017 / Accepted: 7 March 2017 / Published: 18 March 2017
(This article belongs to the Section Energy)
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Abstract

In this work, a wind turbine shrink disk is used as the research object to investigate load-carrying performance of a multi-layer interference fit, and the theoretical model and finite element model are constructed. According to those models, a MW-level turbine shrink disk is designed, and a test device is developed to apply torque to this turbine shrink disk by hydraulic jack. Then, the circumferential slip between the contact surfaces is monitored and the slip of all contact surfaces is zero. This conclusion verifies the reasonability of the proposed models. The effect of the key influencing factors, such as machining deviation, assembly clearance and propel stroke, were analyzed. The contact pressure and load torque of the mating surfaces were obtained by building typical models with different parameters using finite element analysis (FEA). The results show that the minimum assembly clearance and the machining deviation within the machining range have little influence on load-carrying performance of multi-layer interference fit, while having a greater influence on the maximum assembly clearance and the propel stroke. The results also show that the load-carrying performance of a multiple-layer interference fit can be ensured only if the key factors are set within a reasonable design range. To avoid the abnormal operation of equipment caused by insufficient load torque, the propel stroke during practical assembly should be at least 0.95 times the designed propel stroke, which is significant in guiding the design and assembly of the multi-layer interference fit. View Full-Text
Keywords: wind turbine; shrink disk; multi-layer interference cylinder; assembly clearance; propel stroke wind turbine; shrink disk; multi-layer interference cylinder; assembly clearance; propel stroke
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Wang, J.; Ning, K.; Tang, L.; Malekian, R.; Liang, Y.; Li, Z. Modeling and Finite Element Analysis of Load-Carrying Performance of a Wind Turbine Considering the Influence of Assembly Factors. Appl. Sci. 2017, 7, 298.

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