Ứng dụng mô hình Kriging kết hợp thuật toán cá voi trong tối ưu hóa phân tích ảnh hưởng của kết cấu vi mô đối với hiệu suất ma sát cặp ma sát lót xilanh-xéc măng động cơ ô tô

Để nghiên cứu ảnh hưởng của kết cấu vi mô, nâng cao hiệu suất cặp ma sát của động cơ ô tô, cặp ma sát lót xilanh-xéc măng được lựa chọn làm đối tượng nghiên cứu. Bài viết phân tích và đánh giá ảnh hưởng của các thông số hình học của kết cấu vi mô đến hiệu suất làm việc của cặp ma sát. | 74 Journal of Mining and Earth Sciences Vol. 64 Issue 5 2023 74 - 93 Application of the Kriging model combined with the whale algorithm in the optimization analysis of the micro-texture effect on the performance of the engine piston ring cylinder friction pair Tuan Thanh Nguyen 1 Loi Van Le 2 Hiep Van Tran 3 1 Hanoi University of Mining and Geology Hanoi Vietnam 2 Vinacomin Institute of Mining and Energy Mechanical Engineering Hanoi Vietnam 3 National University of Science and Technology quot MISIS quot Leninsky Avenue Moscow Russia ARTICLE INFO ABSTRACT Article history In order to study the influence of microstructure and improve the Received 09th June 2023 efficiency of the engine friction pair the engine piston ring cylinder liner Revised 04th Sept. 2023 friction pair is selected as the research object. This paper analyzes and Accepted 29th Sept. 2023 evaluates the influence of microstructural geometric parameters on the Keywords performance of friction pair. The Kriging model is used as a parametric Coefficient of friction model to simulate the microstructural parameters and combined with the whale optimization algorithm to optimize the microstructural Kriging parameters. The optimal microstructural parameters of the piston Micro-texture ring cylinder liner friction pair are obtained as follows ellipse long Piston ring-cylinder liner half μm short half axis μm offset μm depth μm axial Whale optimization algorithm. spacing μm and circumferential spacing μm. Compared with the prototype piston ring liner friction pair the average friction coefficients of piston ring cylinder liner friction pair with unoptimized microstructure and optimized microstructure were respectively reduced by and the average bearing pressure was increased by and the average friction power decreased by and the average oil film thickness increased by and and the minimum oil film thickness increased by and .