Affiliation:
1. Ship Electromechanical Equipment Institute, Dalian Maritime University, Dalian 116026, China
2. China Harzone Industry Corp., Ltd., Wuhan 430200, China
Abstract
Component parameters directly affect the dynamic characteristics of suspension systems in small rescue craft. To study and improve the vibration reduction performance of a new suspension system, sensitivity analysis and genetic algorithm (GA) optimization were performed for a three-degree-of-freedom (3-DOF) vibration reduction suspension system. The system performance was analyzed using AMESim multi-condition simulations, and the sensitivity of the system to parameters that affect its dynamic characteristics was analyzed. Furthermore, the parameters were optimized using the GA. The simulation results indicated that the hydraulic cylinder inner diameter, the piston rod diameter, the accumulator volume, the accumulator pre-charge pressure, and the damper valve aperture size all influenced the working performance of a small salvage vessel. The optimization results showed that the stability of the ship was improved by 60% and that the main hull acceleration root mean square value decreased by 2.24% as a result of the optimization. The stability and riding comfort of the small salvage ship were improved, and there was an evident stability optimization effect. The comprehensive performance of the salvage ship was significantly improved.
Funder
National Natural Science Foundation of China
Open Fund of National Center for International Research of Subsea Engineering Technology and Equipment
Subject
Ocean Engineering,Water Science and Technology,Civil and Structural Engineering
Reference27 articles.
1. Experimental investigation on a cabin-suspended catamaran in terms of motion reduction and wave energy harvesting by means of a semi-active motion control system;Han;Appl. Ocean Res.,2019
2. Han, J., Maeda, T., Kinoshita, T., and Kitazawa, D. (2015, January 14–19). Towing test and motion analysis of motion controlled ship—Based on an application of skyhook theory. Proceedings of the 12th International Conference on the Stability of Ships and Ocean Vehicles (STAB2015), Glasgow, Scotland.
3. Anti-slamming bulbous bow and tunnel stern applications on a novel Deep-V catamaran for improved performance;Atlar;Int. J. Nav. Archit. Ocean Eng.,2013
4. Investigation of motions of catamarans in regular waves—I;Fang;Ocean Eng.,1996
5. High speed marine craft motion mitigation using flexible hull design;Townsend;Ocean Eng.,2012