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| Calculation of automobile nonlinear dynamic system |
| Received:October 12, 2005 Revised:October 11, 2006 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20076175 |
| KeyWord:rubber suspension,hysteresis,mathematical modeling,parameters identification,dynamics substructure,component mode synthesis |
| FANG Ming-xia FENG Qi |
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| Abstract: |
| In order to establish mathematical model of car engine cradle rubber suspension and identify all parameters in the model,dynamic test and theory analyses of rubber suspension were done in this paper.The force vs.displacement hysteretic curve reconstructed by the model fit the experimental data well,it means the model is correct.Then,the basic principle of free interface component mode synthesis was introduced.Using the way of dynamic substructure to divide an entire car model into several substructures,containing power substructure,engine cradle substructure,body and interior sound field coupling substructure,non-spring mass substructure and several linear and non-linear connecting substructures and etc.,utilizing free-interface component mode synthesis with connecting substructures to set up entirecar non-linear dynamic model.At last,the simulating results of the nonlinear dynamic model were verified by the test of road. |
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