A novel bolted joint model with stick-slip hysteresis properties considering pressure-dependent stiffness: Theoretical and experimental investigations

被引：18

作者：

Liu, Honghao ^{[1
,2
]}

Sun, Wei ^{[1
,2
]}

Du, Dongxu ^{[1
,2
]}

Liu, Xiaofeng ^{[1
,2
]}

Ma, Hongwei ^{[1
,2
]}

机构：

[1] Northeastern Univ, Sch Mech Engn & Automat, Shenyang 110819, Peoples R China

[2] Northeastern Univ, Key Lab Vibrat & Control Aeroprop Syst, Minist Educ China, Shenyang 110819, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2023年 / 187卷

基金：

中国国家自然科学基金;

关键词：

Tangential stick -slip hysteresis behavior of; bolted joints; Pressure -dependent stiffness; Improved Iwan model; Bolted fiber -reinforced composites joint; NORMAL CONTACT STIFFNESS; CYLINDRICAL-SHELLS; DYNAMIC-ANALYSIS; FREE-VIBRATION; FRACTAL MODEL; IWAN MODEL; SURFACE; PARAMETERS;

D O I：

10.1016/j.triboint.2023.108717

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Considering the influence of normal pressure on tangential stiffness, in this paper, an improved Iwan model with pressure-dependent stiffness is proposed to better describe tangential stick-slip hysteresis behaviors of bolted fiber-reinforced composite joints. In the model, the expression of the force-displacement relationship is derived from the evolution of the slip area. The parameters of the model are obtained based on multi-scale fractal contact theory, which avoids the inconvenience of parameter estimation methods requiring special quasi-static experi-ments. Meanwhile, the tangential behavior experiment of bolted fiber-reinforced composite joints is carried out. By comparing the hysteresis curve results and the stiffness softening law, the accuracy of the model and the necessity of considering the pressure dependence of the tangential stiffness are proved.

引用

页数：14