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<p>Transverse stabilizer bars are key components of automotive suspension systems, primarily enhancing vehicle roll resistance and driving stability. However, conventional steel stabilizer bars suffer from excessive weight and limited fatigue durability. To overcome these limitations, this study proposes a lightweight design for composite transverse stabilizer bars based on multi-fiber hybrid-reinforced composites, for which a stiffness prediction theory and a finite element analysis (FEA) model were established. Experimental validation confirmed the model’s reliability, with prediction errors below 5%. The results indicate that triaxial braided structures significantly improve the stiffness and fatigue life of the composite stabilizer bars. Among the various configurations, a hybrid triaxial braided structure combining a glass-fiber outer layer with a ramie-fiber inner layer exhibited the best overall performance. Compared with steel transverse stabilizer bars of identical dimensions, the proposed composite design achieves a 52.2% reduction in weight while maintaining equivalent stiffness, along with a 6.07% improvement in fatigue life. This research provides both theoretical and experimental foundations for the engineering application of composite stabilizer bars, which hold significant potential for advancing automotive lightweighting and sustainable manufacturing.</p>

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Performance Matching Design Method and Failure Mechanism Study of Composite Automobile Transverse Stabilizer Bar Implanted with Novel Braided Reinforcements

  • 期刊论文

  • 发表日期：

    2026年1月7日

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  • Jun Ke,
  • Xu Li,
  • Luo Bao,
  • Zhenyu Wu,
  • Yanhong Yuan,
  • Huanqi Zhou

摘要

Transverse stabilizer bars are key components of automotive suspension systems, primarily enhancing vehicle roll resistance and driving stability. However, conventional steel stabilizer bars suffer from excessive weight and limited fatigue durability. To overcome these limitations, this study proposes a lightweight design for composite transverse stabilizer bars based on multi-fiber hybrid-reinforced composites, for which a stiffness prediction theory and a finite element analysis (FEA) model were established. Experimental validation confirmed the model’s reliability, with prediction errors below 5%. The results indicate that triaxial braided structures significantly improve the stiffness and fatigue life of the composite stabilizer bars. Among the various configurations, a hybrid triaxial braided structure combining a glass-fiber outer layer with a ramie-fiber inner layer exhibited the best overall performance. Compared with steel transverse stabilizer bars of identical dimensions, the proposed composite design achieves a 52.2% reduction in weight while maintaining equivalent stiffness, along with a 6.07% improvement in fatigue life. This research provides both theoretical and experimental foundations for the engineering application of composite stabilizer bars, which hold significant potential for advancing automotive lightweighting and sustainable manufacturing.