Abstract
In this work, simulations of pouring, solidification and cooling, and residual stress evolution of sand and chill cast wind turbine main shafts is performed. The models are made in the commercial software MAGMAsoft. As expected, the cooling rate of the sand casting is shown to be much lower than for the chill casting, resulting in a very course microstructure.From the simulations the nodule count is found to be 17 nodules per mm2 and 159 nodules permm2 for the sand and chill casting, respectively, in the critical region of the main bearing seat.This is verified from nodule counts performed on the real cast main shafts. Residual stressevaluations show an overall increase of the maximum principal stress field for the chill casting,which is expected. However, the stresses are found to be in compression on the surface of thechill cast main shaft, which is unforeseen.
Original language | English |
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Article number | 012025 |
Journal | I O P Conference Series: Materials Science and Engineering |
Volume | 84 |
Number of pages | 10 |
ISSN | 1757-8981 |
DOIs | |
Publication status | Published - 2015 |
Event | 14th International Conference on Modelling of Casting, Welding and Advanced Solidification Processes - Awaji island, Hyogo, Japan Duration: 21 Jun 2015 → 26 Jun 2015 http://mcwasp2015.jp/ |
Conference
Conference | 14th International Conference on Modelling of Casting, Welding and Advanced Solidification Processes |
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Country/Territory | Japan |
City | Awaji island, Hyogo |
Period | 21/06/2015 → 26/06/2015 |
Internet address |