The design sensitivity and optimization of vehicle suspension parameters under excitation caused by road roughness are investigated by the finite element method with non-linear viscous damping taken into consideration. A numerical approach for vehicle dynamics is developed to determine the non-linear dynamic response, enabling design sensitivity analysis and optimization to be carried out for vibration reduction. For verification of this approach, a four-wheel independent suspension is modelled for linear and non-linear viscous damping, and this model can be applied to road irregularities. The non-optimized and optimized acceleration responses for the two damping cases are illustrated. The optimized suspension systems give a 60 per cent reduction in acceleration at the design point.
MisunV.Simulation of the interaction between vehicle wheel and the unevenness of road surfaceVeh. Syst. Dynamics, 1990, 19, 237–253.
2.
Van der WerffK.JonkerJ. B.Dynamics of flexible mechanisms In Computer Aided Analysis and Optimization of Mechanical System Dynamics (Ed. HaugE.J.), 1984 (Springer-Verlag).
IbrahimbegovicA.WilsonE. L.Simple numerical algorithm for the mode superimposition analysis of linear structural systems with non-proportional dampingComputer and Struct., 1989, 33, 523–531.
5.
ClaretA. M.FilhoF. V.A modal superimposition pseudo-force method for dynamic analysis of structural systems with non-proportional dampingEarthquake Engng and Struct. Dynamics, 1991, 20, 303–315.
6.
IbrahimbegovicA.WilsonE. L.Unified computational model for static and dynamic friction contact analysisInt. J. Numer. Meth. in Engng, 1992, 34, 233–234.
7.
BatheK. J.GracewskiS.On nonlinear dynamic analysis using substructuring and mode superimpositionComputer and Struct., 1981, 13, 699–707.
8.
LinY. T.SunT. C.Mode superimposition analysis of viscously damped nonlinear structural nonlinear systems using an incremental algorithmTrans. ASME, J. Vibr. and Acoust., 1994, 115, 397–402.
9.
AroraJ. S.HaugE. J.Methods of design sensitivity analysis in structural optimizationAm. Inst. Aeronaut. Astronaut. J., 1979, 17, 970–974.
10.
HaugE. J.AroraJ. S.Applied Optimal Design, 1979 (Wiley Interscience, New York).
11.
RyuY. S.HaririanM.WuC. C.AroraJ. S.Structure design sensitivity analysis of nonlinear responseComputer and Struct., 1985, 21, 245–255.
12.
WuC. C.AroraJ. S.Design sensitivity analysis of nonlinear response using incremental procedureAm. Inst. Aeronaut. Astronaut. J., 1987, 25, 1118–1125.
13.
HarianM.CardosJ. B.AroraJ. S.Use of ADINA for design optimization of nonlinear structuresComputer and Struct., 1987, 26, 123–133.
14.
HsiehC. C.AroraJ. S.Design sensitivity analysis and optimization of dynamic responseComputer Meth. Appl. Mechanics and Engng, 1984, 43, 195–219.
15.
CardosoJ. B.AroraJ. S.Design sensitivity analysis of nonlinear dynamic response of structural and mechanical systemsStructural Optimization, 1992, 4, 37–46.
16.
AroraJ. S.Design sensitivity analysis in dynamic thermo-visco-elasticity with implicit integrationInt. J. Solids and Struct., 1996, 33, 577–594.
17.
DahlbergT.Comparison of ride comfort criteria for computer optimization of vehicles traveling on randomly profiled roadsVeh. Syst. Dynamics, 1980, 9, 291–307.
18.
PintadoP.BenitezF. G.Optimization for vehicle suspension I: Time domainVeh. Syst. Dynamics, 1990, 19, 273–288.
19.
DemicM.A contribution to the optimization of the characteristics of elasto-damping elements of passenger carsVeh. Syst. Dynamics, 1990, 19, 3–18.
20.
BatheK. J.Finite Element Procedures in Engineering Analysis, 1982 (Prentice-Hall, Englewood Cliffs, New Jersey).
21.
BatheK. J.BolourchiS.RamaswamyS.SuyderM. D.Some computational capabilities for nonlinear finite element analysisJ. Nucl. Engng Des., 1978, 46, 429–455.
22.
LinY. T.ChungT. T.SunT. C.Dynamic response optimization of nonlinear structures with viscous damping effects for design-dependent cyclic loadsComputer and Struct., 1992, 45, 461–469.
23.
AroraJ. S.Introduction to Optimum Design, 1989 (McGraw-Hill, New York).
