Numerical and experimental study on the lateral contact model of a circular rod moving in a circular channel

Wu Feng; Zhao Ke; Wu Xuanlong; Zhao Liliang; Zhao Yuelin

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Numerical and experimental study on the lateral contact model of a circular rod moving in a circular channel

Wu Feng 1 *,Zhao Ke 2,Wu Xuanlong 2,Zhao Liliang 2,Zhao Yuelin 2

1.State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian, Liaoning 116024, P.R. China;State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian, Liaoning 116024, P.R. China;State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian, Liaoning 116024, P.R. China;State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian, Liaoning 116024, P.R. China;State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian, Liaoning 116024, P.R. China

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Funding: the National Natural Science Foundation of China grants （No.Nos. 11472076 and 51609034）, the Science Foundation of Liaoning Province of China （No.No. 2021-MS-119）, the Dalian Youth Science and Technology Star project （No.No. 2018RQ06）, the Fundamental Research Funds for the Central Universities grant （No.Nos. DUT20R）

Opened online: 6 March 2023

Accepted by: none

Citation: Wu Feng,Zhao Ke,Wu Xuanlong.Numerical and experimental study on the lateral contact model of a circular rod moving in a circular channel[OL]. [ 6 March 2023] http://en.paper.edu.cn/en_releasepaper/content/4759296

When a rod moves in a circular channel, high-frequency collisions occur between the rod and the channel wall. Contact models are crucial for predicting the motion of the rod. This paper conducts experimental studies on the movement of a rod in a circular channel and compares four different contact models based on experimental data. To improve the computational efficiency of simulating high-frequency collisions between the rod and the pipe wall, a time-averaging method is used to establish a time-averaged collision equation. This equation uses time-averaged displacement as the basic variable and handles contact problems through time-averaged gap functions and time-averaged contact forces. Two time-averaged contact models are proposed through polishing methods and machine learning, and comparison with experimental data shows that these models can ensure the accuracy of rod motion analysis while improving computational efficiency.

Keywords:Collision; Time-averaged Contact Model; Experiment; Polishing; Machine Learning

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