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Optimized design for a MacPherson strut suspension with side load springs

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Abstract

Undesired lateral force inevitably exists in a MacPherson suspension system, which is liable to damper rod’s side wear and promotes the damper’s inner friction decreasing the ride performance from the suspension system. Substituting a new side load spring with curved centerline for the conventional coil spring has been proven able to solve these problems and Multi-body Dynamics combining with Finite Elements Analysis may be an efficient method in optimizing its design. Therefore, taking a passenger car as example, a detailed multi-body dynamics model for the suspension system is built to simulate forces exerted on the damper and the minimization of its lateral component is selected as the design target for the spring. When the structure optimization of the side load spring is performed using FEA software ANSYS, its vertical and lateral elastic characteristics, supported by test data, are analyzed. After importing FEA results back to the suspension system, the dynamics simulation can be performed to validate the optimization result.

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References

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Authors and Affiliations

  1. State Key Laboratory of Vibration, Shock and Noise, Institute of Automotive Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China

    J. Liu, D. J. Zhuang & F. Yu

  2. China Spring Factory 291, Yunchuan Rd., Shanghai, 200071, China

    L. M. Lou

Authors
  1. J. Liu
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  2. D. J. Zhuang
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  3. F. Yu
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  4. L. M. Lou
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Correspondence to J. Liu.

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Liu, J., Zhuang, D.J., Yu, F. et al. Optimized design for a MacPherson strut suspension with side load springs. Int.J Automot. Technol. 9, 29–35 (2008). https://doi.org/10.1007/s12239-008-0004-y

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  • DOI: https://doi.org/10.1007/s12239-008-0004-y

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