Investigation on guided wave characteristics of prestressed bolts based on mechanics of incremental deformations theory

被引：4
|
作者：
Li, Zhi [1 ]
Yu, Jiangong [1 ]
Zhang, Xiaoming [1 ]
Zhang, Bo [1 ,2 ,3 ]
Liu, Yanwei [2 ,3 ]
Li, Zhuoran [1 ]
机构：
[1] Henan Polytech Univ, Sch Mech & Power Engn, Jiaozuo 454003, Peoples R China
[2] Henan Polytech Univ, Coll Safety Sci & Engn, Jiaozuo 454003, Peoples R China
[3] Henan Int Joint Lab Coal Mine Safety & Occupat Haz, Jiaozuo 454003, Peoples R China
来源：
MEASUREMENT | 2024年 / 224卷
基金：
中国国家自然科学基金;
关键词：
Prestress; Viscoelastic; Legendre polynomial; Dispersion; Attenuation; Ultrasonic guided wave; ULTRASONIC-WAVES; ROCK BOLTS; PROPAGATION; DISPERSION; FREQUENCY; STRESS; PLATES;
D O I：
10.1016/j.measurement.2023.113881
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The magnitude of prestress can reflect the degree of anchor bolt failure, but currently there are relatively limited theoretical research methods for the wave characteristics of prestressed bolts. For this reason, this paper establishes a viscoelastic bolt model with prestress based on the Mechanics of Incremental Deformations theory and the Kelvin-Voight viscoelastic theory, and proposes a recursive Legendre polynomial series method (RLPSM) to solve the longitudinal guided wave propagation characteristics in free bolts with prestress. The dispersion and attenuation curves of longitudinal guided waves in free bolts with various prestresses are given, and the influences of prestress on dispersion curves are analyzed. Meanwhile, the ultrasonic guided wave detection system of free bolts with prestress is established for laboratory research, and compared with the theoretical results.
引用
收藏
页数：20
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