Development of a Refined Quarter Car Model for the Analysis of Discomfort due to Vibration
In the automotive industry, numerous expensive and time-consuming trials are used to “optimize” the ride and handling performance. Ideally, a reliable virtual prototype is a solution. The practical usage of a model is linked and restricted by the model complexity and reliability. The object of this...
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| Veröffentlicht in: | Advances in Acoustics and Vibration 2012-01, Vol.2012 (2012), p.485-491 |
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| creator | Thite, A. N. |
| description | In the automotive industry, numerous expensive and time-consuming trials are used to “optimize” the ride and handling performance. Ideally, a reliable virtual prototype is a solution. The practical usage of a model is linked and restricted by the model complexity and reliability. The object of this study is development and analysis of a refined quarter car suspension model, which includes the effect of series stiffness, to estimate the response at higher frequencies; resulting Maxwell's model representation does not allow straightforward calculation of performance parameters. Governing equations of motion are manipulated to calculate the effective stiffness and damping values. State space model is arranged in a novel form to find eigenvalues, which is a unique contribution. Analysis shows the influence of suspension damping and series stiffness on natural frequencies and regions of reduced vibration response. Increase in the suspension damping coefficient beyond optimum values was found to reduce the modal damping and increase the natural frequencies. Instead of carrying out trial simulations during performance optimization for human comfort, an expression is developed for corresponding suspension damping coefficient. The analysis clearly shows the influence of the series stiffness on suspension dynamics and necessity to incorporate the model in performance predictions. |
| doi_str_mv | 10.1155/2012/863061 |
| format | Article |
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| ispartof | Advances in Acoustics and Vibration, 2012-01, Vol.2012 (2012), p.485-491 |
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| source | Wiley Online Library Open Access; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection |
| subjects | Coefficients Damping Eigenvalues Mathematical models Optimization Ratios Resonant frequency Stiffness Studies Vibration |
| title | Development of a Refined Quarter Car Model for the Analysis of Discomfort due to Vibration |
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