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A Study of A Nonlinear Viscoelastic Model for Elastomeric Bushing in Radial Mode  

이성범 (인제대학교 기계자동차공학부)
최종근 (강원도립대학 기계과)
민제홍 (삼성전자 CTO 전략실)
Publication Information
Journal of the Korean Society for Precision Engineering / v.20, no.5, 2003 , pp. 204-209 More about this Journal
Abstract
An elastomeric bushing is a device used in automotive suspension systems to reduce the load transmitted from the wheel to the frame of the vehicle. A bushing is an elastomeric hollow cylinder which is bonded to a solid steel shaft at its inner surface and a steel sleeve at its outer surface. The relation between the load applied to the shaft or sleeve and the relative deformation of elastomeric bushing is nonlinear and exhibits features of viscoelasticity. A load-displacement relation for elastomeric bushing is important for dynamic numerical simulations. A boundary value problem for the bushing response leads to the load-displacement relation which requires complex calculations. Therefore, by modifying the constitutive equation fur a nonlinear viscoelastic incompressible material developed by Lianis, the data fur the elastomeric bushing material was obtained and this data was used to derive the new load-displacement relation for radial response of the bushing. After the load relaxation function for the bushing is obtained from the step displacement control test, Pipkin-Rogers model was developed, Solutions were allowed fur comparison between the results of Modified Lianis model and those of the proposed model. It is shown that the proposed Pipkin-Rogers model is in very good agreement with Modified Lianis model.
Keywords
Elastomeric bushing; Pipkin-Rogers model; Nonlinear viscoelastic incompressible material;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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