Analysis on fatigue behavior of water hydraulic artificial muscles under different elastic loads in underwater environment

被引：2
作者：
Zhang, Zengmeng [1 ,2 ,4 ]
Zhang, Dewen [1 ]
Che, Jinkai [1 ]
Xie, Yuqing [1 ]
Yang, Yong [1 ]
Gong, Yongjun [1 ,3 ,5 ]
机构：
[1] Dalian Maritime Univ, Coll Naval Architecture & Ocean Engn, Dalian, Peoples R China
[2] Dalian Maritime Univ, Liaoning Prov Key Lab Rescue & Salvage Engn, Dalian, Peoples R China
[3] Dalian Maritime Univ, Int Joint Res Ctr Subsea Engn Technol & Equipment, Dalian, Peoples R China
[4] Dalian Maritime Univ, Coll Naval Architecture & Ocean Engn, Dept Mech Engn, Dalian 116026, Liaoning, Peoples R China
[5] Dalian Maritime Univ, Int Joint Res Ctr Subsea Engn Technol & Equipment, Dalian 116026, Liaoning, Peoples R China
来源：
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2023年 / 46卷 / 08期
基金：
中国国家自然科学基金;
关键词：
aramid fiber; fatigue behavior; fibrillation; fracture; friction; water hydraulic artificial muscle;
D O I：
10.1111/ffe.14037
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
As a novel and flexible actuator, the water hydraulic artificial muscle (WHAM) has become at the forefront of bionic robot research. In order to explore the fatigue behavior of WHAM, the lifetime of WHAM was analyzed based on the crack propagation of neoprene rubber and the S-N curve of aramid fiber. Meanwhile, WHAM's fatigue tests were carried out, and the fatigue life exceeded 56,000 cycles under the pressure of 2 MPa and the elastic load of 1030.7 N/mm. In addition, WHAM's fatigue failure is represented as the burst of the rubber tube after fiber fracture. Moreover, heavy load aggravates fibrillation that leads to severe fracture of fibrils under similar friction, and the fatigue life of WHAM is aggravatingly shortened by the coupling of fibrillation and friction. Finally, an empirical model of fatigue life was obtained, which can predict the lifetime of WHAM.
引用
收藏
页码：2864 / 2877
页数：14
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