Research on reliability and dynamic characteristics of planar complex multi-bar mechanism considering clearance and irregular wear effect

IF 3.4 2区数学 Q1 MATHEMATICS, APPLIED

Communications in Nonlinear Science and Numerical Simulation Pub Date : 2025-02-20 DOI:10.1016/j.cnsns.2025.108708

Dong Liang , Tao Lv , Zhimin Wang

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引用次数: 0

Abstract

To study the motion reliability and dynamic characteristics of a planar multi-bar mechanism with clearance, this paper takes the R-2RRP-RRR mechanism with single clearance as the research object, establishes its dynamic model based on the Newton-Euler method, and the effectiveness of the dynamic model is verified through both the numerical computation and multibody dynamics simulation. A method for motion reliability analysis using failure rate as a reliability metric based on Monte Carlo algorithm is proposed, which is simple and highly accurate, and the influence rule of mechanism motion reliability under the interaction of multiple factors is revealed using the proposed method. Based on Archard's model and Lankarani-Nikravesh nonlinear contact force model, a method for analyzing and quantifying irregular wear effects of multi-bar mechanism with clearance is presented, and the influence on the mechanism of crank speed, clearance size, coefficient of friction and coefficient of restitution on irregular wear of mechanism with clearance are investigated systematically. The factors affecting the behavior of the nonlinear characteristics of multi-bar mechanism are studied, and the obtained conclusions provide sound foundation for the life prediction and optimal design of multi-bar mechanism with single clearance as well as multi-clearance in practical application.

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来源期刊

Communications in Nonlinear Science and Numerical Simulation MATHEMATICS, APPLIED-MATHEMATICS, INTERDISCIPLINARY APPLICATIONS

CiteScore

6.80

自引率

7.70%

发文量

378

审稿时长

78 days

期刊介绍： The journal publishes original research findings on experimental observation, mathematical modeling, theoretical analysis and numerical simulation, for more accurate description, better prediction or novel application, of nonlinear phenomena in science and engineering. It offers a venue for researchers to make rapid exchange of ideas and techniques in nonlinear science and complexity. The submission of manuscripts with cross-disciplinary approaches in nonlinear science and complexity is particularly encouraged. Topics of interest: Nonlinear differential or delay equations, Lie group analysis and asymptotic methods, Discontinuous systems, Fractals, Fractional calculus and dynamics, Nonlinear effects in quantum mechanics, Nonlinear stochastic processes, Experimental nonlinear science, Time-series and signal analysis, Computational methods and simulations in nonlinear science and engineering, Control of dynamical systems, Synchronization, Lyapunov analysis, High-dimensional chaos and turbulence, Chaos in Hamiltonian systems, Integrable systems and solitons, Collective behavior in many-body systems, Biological physics and networks, Nonlinear mechanical systems, Complex systems and complexity. No length limitation for contributions is set, but only concisely written manuscripts are published. Brief papers are published on the basis of Rapid Communications. Discussions of previously published papers are welcome.