Title :
Study on nonlinear stiffness characteristics of cystiform air spring
Author :
Mingjun, Zheng ; Xiaokai, Chen ; Yi, Lin ; Hongwei, Zhao
Author_Institution :
Sch. of Mech. Eng., Shijiazhuang Railway Inst., Shijiazhuang
Abstract :
Based on the study of the mechanics features of air spring including the nonlinearities in material, geometry, contact, and with the method of nonlinear finite element analysis, the three-dimensional finite element model of a cystiform air spring was established. The analytical results were confirmed by the experiment with the use of an air spring test bench. The different contributions to the nonlinear stiffness characteristic of the cystiform air spring were studied in the paper, which related to the inflation pressure, capsule parameters and additional chamber volume. The results show that the inflation pressure, capsule cord angle and additional chamber volume of the air spring have distinct influence on the stiffness character; whereas, the number of capsule card layer, interval of capsule card grid, and capsule card material have a little impact.
Keywords :
elasticity; finite element analysis; springs (mechanical); capsule parameters; cystiform air spring; inflation pressure; nonlinear finite element analysis; nonlinear stiffness characteristics; Anisotropic magnetoresistance; Automotive engineering; Capacitive sensors; Composite materials; Fabrics; Finite element methods; Mechanical factors; Road vehicles; Rubber; Springs; Cystiform air spring; FEA; Influence parameter; Nonlinearity; Stiffness characteristics;
Conference_Titel :
Vehicle Power and Propulsion Conference, 2008. VPPC '08. IEEE
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-1848-0
Electronic_ISBN :
978-1-4244-1849-7
DOI :
10.1109/VPPC.2008.4677469
