膜式空气弹簧变活塞型线对静刚度特性的影响  

Influence of Membrane Air Spring with Variable Piston Profile on Stiffness Characteristics

作　　者：杨涵 杨广丰 刘宁豪 YANG Han;YANG Guangfeng;LIU Ninghao(School of Automobile,Chang'an University,Xi'an 710064,China)

机构地区：[1]长安大学汽车学院,陕西西安710064

出　　处：《汽车实用技术》2024年第13期83-89,共7页Automobile Applied Technology

摘　　要：现代汽车悬架技术的快速发展,要求汽车在操纵稳定性、行驶平顺性等方面进一步提高性能。高度和刚度可调、吸振能力较佳和使用寿命较长的空气弹簧在中高端乘用车上得到使用。活塞型线对空气弹簧的刚度特性影响较大,不同的活塞型线会直接影响空气弹簧的有效作用直径。文章以乘用车膜式空气弹簧为研究对象,设计了四种不同的活塞型线(L型、S型、O型、反O型),基于有限元分析软件ABAQUS研究分析了不同初始内压下活塞型线对空气弹簧刚度特性的影响。结果表明,O型活塞空气弹簧的承载能力最强,反O型与O型活塞成对称结构,其承载能力最弱,随着初始内压的增大,其承载能力的差距会愈发明显,S型活塞空气弹簧的承载能力介于O型与反O型活塞之间,并表现出理想的反S特性。The rapid development of modern automobile suspension technology requires the vehicle to further improve its performance in handling stability,ride comfort and other aspects.Air springs with adjustable height and stiffness,better vibration absorption capacity and longer service life are used in middle and high-end passenger cars.Piston profile has a great influence on the stiffness characteristics of air spring,and different piston profile directly affects the effective action diameter of air spring.In this paper,four different piston profiles(L type,S type,O type and reverse O type)are designed for passenger car film air spring.Based on the finite element analysis software ABAQUS,the influence of piston profiles on stiffness characteristics of air spring under different initial internal pressures is studied and analyzed.Results show that the O type piston air spring the carrying capacity of the strongest,the O type and type O piston into symmetric structure,the carrying capacity of the weak,with the increase of initial internal pressure,the carrying capacity of the gap is increasingly apparent,S piston type air spring bearing capacity between O and O piston,and shows the ideal anti-S characteristics.

关 键 词：汽车悬架 空气弹簧 活塞型线 有效作用直径 刚度特性 

分 类 号：U260.331[机械工程—车辆工程]