The road impact load and the vibration are the main factors for the commercial vehicle, especially on the van trailer. In this paper, a new method which puts the operating modal identification and power spectrum density (PSD) analysis together was presented. The analysis results coincided with the road test quite well. The power spectrum response was obtained and the fatigue life of the vehicle was also estimated. This method can be used for the vibration optimization design and a random fatigue design of other commercial vehicles. The simulation results were validated by the experiments of the static trial and ground test, respectively. So the validity and practicability of dynamic finite element simulation method were verified. Based on the FEA of the full model under the random vibration excitation, the dynamic stresses trace of the vehicle body dangerous positions were obtained and the results could be put into practice to analyze the fatigue life. The van trailer mentioned in this paper was of large size. The analysis results coincided with the road test quite well, and the method which predicted the fatigue life of all body parts by computer simulation was also practicable. The analysis flow and the predicting formula are also useful and valuable for other types of vehicles. The model of van-trailer and the real time simulation system were for the random road. The results of the experiment were compared with the ones obtained from the simulation system. Tests proved that this system worked very well. This system was built to provide practical suggestions for designing and matching of the air suspension semi-trailer. At last, by changing the model's parameters and using the cross design method, we compared the results of the modified model with the results of the original model. Then topological optimization was used in the parameter model.
FEM study for van trailer dynamic performance with air suspension
FEM-Untersuchung der Leistung eines Lastwagenanhängers mit pneumatischer Aufhängung
2006
8 Seiten, 12 Bilder, 2 Tabellen, 12 Quellen
Aufsatz (Konferenz)
Englisch
FEM Study for Van Trailer Dynamic Performance with Air Suspension
SAE Technical Papers | 2006
|FEM study for van trailer dynamic performance with air suspension
Kraftfahrwesen | 2006
|FEM study for van trailer dynamic performance with air suspension
Kraftfahrwesen | 2007
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