A general tribo-dynamic model for lubricated clearance joints in spatial multibody systems

被引：0

作者：

Liu, Shuo ^{[1
]}

Cui, Yi ^{[1
]}

Xing, Mingcai ^{[1
]}

Gao, Lining ^{[1
]}

Zhu, Feng ^{[2
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China

[2] Natl Key Lab Marine Engine Sci & Technol, Shanghai 201108, Peoples R China

来源：

SCIENTIFIC REPORTS | 2025年 / 15卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Tribo-dynamic model; Multibody systems; Mixed lubrication; Spatial and temporal discretization; Absolute coordinate frame; Lubricated clearance joints; AVERAGE FLOW MODEL; MECHANICAL SYSTEMS; TIME INTEGRATION; ALPHA METHOD; EQUATIONS;

D O I：

10.1038/s41598-025-88240-9

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Existing tribo-dynamic models encounter challenges in accurately characterizing the intense coupling and notable nonlinearity between component deformation and oil film pressure in lubricated clearance joints. Consequently, a novel general tribo-dynamic coupling model based on an absolute coordinate framework has been developed in this paper. The equations of motion for flexible multibody systems are formulated based on the absolute nodal coordinate formulation. Mixed lubrication equations are defined at spatial nodes on reference surfaces by employing the mixed Eulerian-Lagrangian approach. The model is applied to a translational clearance joint, validated through an impact test rig. Comparing the dynamical response signals from the model and experiment demonstrates its accuracy in depicting the strong coupling characteristics between deformation and pressure fields in lubricated clearance joints.

引用

页数：15

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