Abstract
A simple model was developed for predicting steam turbine bolt relaxation during a service cycle. The model appears to agree reasonable well with experimental results from bolted joints, although the strains of bolt threads, nuts and flanges in the joint are assumed insignificant compared to bolt shaft strain.
The material parameters involved in the model are those generally applied for elastic and viscoplastic deformation, and therefore should reflect material properties as shown by ordinary material testing.
For testing the model and determining material parameters, relaxation testing will be carried out using steam turbine bolt joint models.
The material parameters involved in the model are those generally applied for elastic and viscoplastic deformation, and therefore should reflect material properties as shown by ordinary material testing.
For testing the model and determining material parameters, relaxation testing will be carried out using steam turbine bolt joint models.
Original language | English |
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Title of host publication | Strength of Metals and Alloys (ICSMA 8) |
Subtitle of host publication | Proceedings of the 8th International Conference On The Strength Of Metals and Alloys |
Editors | P.O. Kettunen, T.K. Lepistö, M.E. Lehtonen |
Publisher | Pergamon Press |
Pages | 1469-1474 |
Volume | 3 |
ISBN (Print) | 978-0-08-034804-9 |
DOIs | |
Publication status | Published - 1988 |
MoE publication type | A4 Article in a conference publication |
Event | 8th International Conference on Strength of Metals and Alloys, ICSMA 8 - Tampere, Finland Duration: 22 Aug 1988 → 26 Aug 1988 |
Conference
Conference | 8th International Conference on Strength of Metals and Alloys, ICSMA 8 |
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Country/Territory | Finland |
City | Tampere |
Period | 22/08/88 → 26/08/88 |