A study of the creep-rupture behavior of HMPE ropes using viscoelastic-viscoplastic-viscodamage modeling

A study of the creep-rupture behavior of HMPE ropes using viscoelastic-viscoplastic-viscodamage... Creep failure of HMPE ropes is a major concern for the application of HMPE ropes in deepwater moorings. Hence, the creep and creep-rupture behaviors of HMPE samples were systematically investigated by utilizing a special experimental set-up. The procedure and techniques for performing creep-rupture tests of HMPE samples were proposed in detail, which can be a reference for other sizes of synthetic fiber ropes. The test results illustrated that the completed creep-rupture curves include the primary, secondary and tertiary creep stages. To simulate the test results of HMPE samples, a viscoelastic, viscoplastic and viscodamage model was developed based on thermodynamics and a method for identifying the model parameters was proposed in detail. Moreover, the comparison of the model predictions with test data at different loading levels was performed and it showed satisfactory agreement, which means the present model can well simulate creep-rupture behaviors of HMPE samples. The present study helps to improve the understanding of creep-rupture behaviors of HMPE ropes for deepwater moorings. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ocean Engineering Elsevier

A study of the creep-rupture behavior of HMPE ropes using viscoelastic-viscoplastic-viscodamage modeling

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Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Ltd
ISSN
0029-8018
eISSN
1873-5258
D.O.I.
10.1016/j.oceaneng.2018.05.003
Publisher site
See Article on Publisher Site

Abstract

Creep failure of HMPE ropes is a major concern for the application of HMPE ropes in deepwater moorings. Hence, the creep and creep-rupture behaviors of HMPE samples were systematically investigated by utilizing a special experimental set-up. The procedure and techniques for performing creep-rupture tests of HMPE samples were proposed in detail, which can be a reference for other sizes of synthetic fiber ropes. The test results illustrated that the completed creep-rupture curves include the primary, secondary and tertiary creep stages. To simulate the test results of HMPE samples, a viscoelastic, viscoplastic and viscodamage model was developed based on thermodynamics and a method for identifying the model parameters was proposed in detail. Moreover, the comparison of the model predictions with test data at different loading levels was performed and it showed satisfactory agreement, which means the present model can well simulate creep-rupture behaviors of HMPE samples. The present study helps to improve the understanding of creep-rupture behaviors of HMPE ropes for deepwater moorings.

Journal

Ocean EngineeringElsevier

Published: Aug 15, 2018

References

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