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research-article

A Multi-objective Optimization Approach on the Spiral Grooves for Gas Mechanical Seals

[+] Author and Article Information
Xiuying Wang

College of Mechanical Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
wangxy621@163.com

Liping Shi

College of Mechanical Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; School of Mechanical Engineering, Anhui University of Technology, Ma'anshan 243000, China
xiaopingguoshi@163.com

Wei Huang

College of Mechanical Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
huangwei@nuaa.edu.cn

Xiaolei Wang

College of Mechanical Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
wxl@nuaa.edu.cn

1Corresponding author.

ASME doi:10.1115/1.4038864 History: Received July 03, 2017; Revised December 24, 2017

Abstract

Spiral groove is one of the most common types of structures on gas mechanical seals. Numerical research demonstrated that the grooves designed for improving load carrying capacity or film stiffness often lead to the leakage increase. Hence, a multi-objective optimization approach specially for conflicting objectives is utilized to optimize the spiral grooves for a specific sample in this study. Firstly, the objectives and independent variables in multi-objective optimization are determined by single objective analysis. Then, a set of optimal parameters i.e., Pareto-optimal set is obtained. Each solution in this set can get the highest load carrying capacity under a specific requirement of the leakage rate. Finally, the collinearity diagnostics are performed to evaluate the importance of different independent variables in the optimization.

Copyright (c) 2017 by ASME
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