An Investigation on Creep and Creep-Rupture Behaviors of HMPE Ropes

被引：7
作者：
Lian, Yushun [1 ,2 ]
Zheng, Jinhai [1 ,2 ]
Liu, Haixiao [3 ,4 ]
机构：
[1] Hohai Univ, Key Lab Coastal Disaster & Def, Minist Educ, Nanjing 210098, Jiangsu, Peoples R China
[2] Hohai Univ, Coll Harbor 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] Shanghai Jiao Tong Univ, Collaborat Innovat Ctr Adv Ship & Deep Sea Explor, Shanghai 200240, Peoples R China
来源：
JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING-TRANSACTIONS OF THE ASME | 2018年 / 140卷 / 02期
基金：
中国国家自然科学基金;
关键词：
HMPE ropes; mooring; creep; creep-rupture; dimensional analysis; creep lifetime; SYNTHETIC-FIBER ROPES; DEEP-WATER MOORINGS; MODEL;
D O I：
10.1115/1.4038345
中图分类号：
P75 [海洋工程];
学科分类号：
0814 ; 081505 ; 0824 ; 082401 ;
摘要：
Creep tests of high modulus polyethylene (HMPE) samples are performed to obtain the corresponding creep and creep-rupture curves. The results show that the secondary creep stage is especially pronounced, and its creep rate is nearly constant. Based on this fact, the creep rate at the secondary stage has been utilized as the representative value of each case. Therefore, the similarity criterion of creep rate at secondary stage is proposed to analyze the corresponding relationship between engineering creep rate and that in laboratory tests. Besides, an empirical expression of HMPE yarns is proposed to account for the effects of both loading level and test temperature on the creep rate at the secondary stage. Moreover, an equation for calculating the creep lifetime of HMPE samples is derived and verified by test data. This study will help to improve the understanding of creep behaviors of HMPE ropes and provide a significant reference for the application of HMPE ropes in mooring engineering.
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页数：8
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