Key Laboratory of Conveyance and Equipment;
Ministry of Education;
East China Jiaotong University;
Nanchang 330013;
China;
Jiangxi Tianxin Metallurgical Equipment Co.Ltd;
Nanchang 330000;
China;
Shanghai Marine Equipment Research Institute;
Shanghai 200031;
China;
high-speed hydraulic cylinder; inside cushion; Reynolds number; cushion performance; multi-objective optimization;