Volume 2, Issue 3, August 2017, Page: 71-76
The Effect of Cladding Creep on the Initiation of GTRFW
William Richard Campbell, Engineering Research Institute, Auckland University of Technology, Auckland, New Zealand
Jerry Chen, Engineering Research Institute, Auckland University of Technology, Auckland, New Zealand
Received: Jul. 20, 2017;       Accepted: Aug. 1, 2017;       Published: Sep. 6, 2017
DOI: 10.11648/j.wjap.20170203.12      View  1498      Downloads  41
Creep plays a critical role in the stress relaxation of a PWR fuel assembly, which causes the initiation of slip and fretting wear. In this paper, the creep down of grid and cladding is simulated using a 3D FEA model. A mechanism-based creep model is incorporated in the structural analysis. The evolution of stress as well as its effects on the slip and wear is analyzed. It is found the creep would lead to partial slip around the contact edge and eventually full slip across the entire contact interface. The contact stress and hydrostatic pressure in the water play key roles in the creep evolution.
Wear, PWR, Creep, Zircaloy 4
To cite this article
William Richard Campbell, Jerry Chen, The Effect of Cladding Creep on the Initiation of GTRFW, World Journal of Applied Physics. Vol. 2, No. 3, 2017, pp. 71-76. doi: 10.11648/j.wjap.20170203.12
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