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Dynamic Characteristics Analysis of a Novel Displacement-Sensitive Anti-pitch Hydraulically Interconnected Suspension and the Corresponding Full Car

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Journal of Vibration Engineering & Technologies Aims and scope Submit manuscript

Abstract

Background

Hydraulically interconnected suspension (HIS) system has drawn wide attention in vibration control fields. The pressure difference problem due to long time use of HIS system will cause unsafe driving of the entire vehicle.

Purpose

To solve the pressure difference problem and improve the anti-pitch and ride comfort performance of the HIS system, the displacement-sensitive grooves are added to the oil cylinder wall of the HIS system. The displacement-sensitive HIS (DSHIS) system has different damping characteristics depending on the position of the piston.

Methods

The DSHIS system and a seven-DOF vehicle are modeled to lay a foundation for the simulation analysis. Then, the damping characteristics of the displacement-sensitive cylinder are studied. Next, the influence of the parameters on the DSHIS system’s performance is studied. Finally, a full car simulation is performed to compare the performance of the proposed DSHIS system to the original suspension and the HIS system.

Results

In the brake simulation, the pitch angles of vehicle 3 and vehicle 2 are reduced by 56% and 62.3% compared with that of vehicle 1, respectively. In the random road simulation, the acceleration RMS values of vehicle 3 and vehicle 2 are decreased by 48.17% and 26.73% than the original suspension, respectively. In the loading shock simulation, the maximum suspension deflection of vehicle 3 is decreased by 17.39% and 3.37% than vehicle 1 and vehicle 2, respectively. The maximum dynamic tire load of the vehicle 3 is decreased by 4.35% and 1.32% than vehicle 1 and vehicle 2, respectively.

Conclusion

The full vehicle simulations prove that the proposed DSHIS system can effectively improve the ride comfort and anti-pitch performance of the mining vehicle. Besides, the pressure difference problem can also be solved by the additional grooves on the cylinder wall.

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Acknowledgements

The research is supported by the National Natural Science Foundation of China (51675152).

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Authors and Affiliations

  1. School of Automotive and Transportation Engineering, Hefei University of Technology, Hefei, 230009, China

    Bin Wang, Minyi Zheng, Weimin Zhong & Suchao Yang

  2. Automotive Research Institute, Hefei University of Technology, Hefei, 230009, China

    Bin Wang, Nong Zhang & Weimin Zhong

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  1. Bin Wang
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  2. Minyi Zheng
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Correspondence to Minyi Zheng.

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Wang, B., Zheng, M., Zhang, N. et al. Dynamic Characteristics Analysis of a Novel Displacement-Sensitive Anti-pitch Hydraulically Interconnected Suspension and the Corresponding Full Car. J. Vib. Eng. Technol. 12, 2759–2774 (2024). https://doi.org/10.1007/s42417-023-01012-5

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  • DOI: https://doi.org/10.1007/s42417-023-01012-5

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