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

被引：28

作者：

Lian, Yushun ^{[1
,2
]}

Zheng, Jinhai ^{[1
,2
]}

Liu, Haixiao ^{[3
]}

Xu, Pengfei ^{[2
]}

Gan, Linlu ^{[4
]}

机构：

[1] Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing 210098, Jiangsu, Peoples R China

[2] Hohai Univ, Coll Harbour Coastal & Offshore Engn, Nanjing 210098, Jiangsu, Peoples R China

[3] Tianjin Univ, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300072, Peoples R China

[4] Univ Illinois, Dept Environm & Civil Engn, Champaign, IL 61820 USA

来源：

OCEAN ENGINEERING | 2018年 / 162卷

基金：

中国国家自然科学基金;

关键词：

HMPE rope; Viscoelasticity; Viscoplasticity; Viscodamage model; Mooring; Creep-rupture; SYNTHETIC-FIBER ROPES; CONSTITUTIVE MODEL; PART I; TIME; LOCALIZATION;

D O I：

10.1016/j.oceaneng.2018.05.003

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

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.

引用

页码：43 / 54

页数：12

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