A human-sensitive frequency band vibration isolator for heavy-duty truck seats

作     者：Qingqing LIU Shenlong WANG Ge YAN Hu DING Haihua WANG Qiang SHI Xiaohong DING Huijie YU 

作者机构：School of Mechanical Engineering University of Shanghai for Science and Technology State Key Laboratory of Mechanical System and Vibration School of Mechanical Engineering Shanghai Jiao Tong University Shanghai Key Laboratory of Mechanics in Energy Engineering Shanghai Frontier Science Center of Mechnoinformatics Shanghai Institute of Applied Mathematics and MechanicsSchool of Mechanics and Engineering Science Shanghai University State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle Engineering Hunan University Yanfeng Adient Seating Co. Ltd. College of Mechanical and Electrical Engineering Jiaxing Nanhu University 

出 版 物：《Applied Mathematics and Mechanics(English Edition)》 (应用数学和力学(英文))

年 卷 期：2024年第45卷第10期

页      面：1733-1748页

核心收录：

学科分类：08[工学] 082304[工学-载运工具运用工程] 080204[工学-车辆工程] 0802[工学-机械工程] 0823[工学-交通运输工程] 

基　　金：Project supported by the National Natural Science Foundation of China (No. 12172226) 

主　　题：human-sensitive frequency band quasi-zero stiffness (QZS) heavy-duty truck seat real random road spectrum low-frequency vibration isolation O328 ISOLATION SYSTEM DESIGN 

摘      要：In this study, a human-sensitive frequency band vibration isolator(HFBVI)with quasi-zero stiffness(QZS) characteristics for heavy-duty truck seats is designed to improve the comfort of heavy-duty truck drivers on uneven roads. First, the analytical expressions for the force and displacement of the HFBVI are derived with the Lagrange equation and d Alembert s principle, and are validated through the prototype restoring force testing. Second, the harmonic balance method(HBM) is used to obtain the dynamic responses under harmonic excitation, and further the influence of pre-stretching on the dynamic characteristics and transmissibility is discussed. Finally, the experimental prototype of the HFBVI is fabricated, and vibration experiments are conducted under harmonic excitation to verify the vibration isolation performance(VIP) of the proposed vibration isolator. The experimental results indicate that the HFBVI can effectively suppress the frequency band(4–8 Hz) to which the human body is sensitive to vertical vibration. In addition, under real random road spectrum excitation, the HFBVI can achieve low-frequency vibration isolation close to 2 Hz, providing new prospects for ensuring the health of heavy-duty truck drivers.