American Journal of Mechanical Engineering
ISSN (Print): 2328-4102 ISSN (Online): 2328-4110 Website: http://www.sciepub.com/journal/ajme Editor-in-chief: Kambiz Ebrahimi, Dr. SRINIVASA VENKATESHAPPA CHIKKOL
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American Journal of Mechanical Engineering. 2019, 7(2), 79-86
DOI: 10.12691/ajme-7-2-4
Open AccessArticle

Multi-objective Optimization of Passive Shock Absorber for Landing Gear

Fenghui Shi1,

1Department of Mechanical Engineering, National Institute of Technology, Akashi College, Japan

Pub. Date: May 03, 2019

Cite this paper:
Fenghui Shi. Multi-objective Optimization of Passive Shock Absorber for Landing Gear. American Journal of Mechanical Engineering. 2019; 7(2):79-86. doi: 10.12691/ajme-7-2-4

Abstract

In order to solve the mass variation problem of aircraft landing gears, usually, semi-active or active shock absorbers are considered first. In this study, however, several types of metering pin constructions are proposed, and have been obtained optimal solutions through multi-objective optimization. The multi-objective optimization methods to find optimum solutions of metering pin dimensions, displacements and the initial pressure of gas are proposed to deal with the mass variation problem. The optimum pareto front sets of four passive shock absorbers are compared and evaluated in this paper. Using the optimum solutions selected from the optimum pareto front sets, we also evaluate and compare the performance of each passive shock absorber with different metering pin construction through simulations. It is evident that the multi-objective optimization solutions of passive shock absorber with new metering pin constructions reduced the mass variation problem to a certain extent. The optimization results and method are helpful in the design of landing gears shock absorbers for various aircrafts.

Keywords:
multi-objective optimization passive shock absorber landing gear metering pin mass variation

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