Hybrid Ladder Chassis Design: Evaluating GFRP Composites as a Weight-Reduction Alternative to Steel

Introduction: The ladder chassis serves as a fundamental structural framework in the automotive industry, supporting critical vehicle components such as the engine, transmission, and axles. Conventional chassis systems predominantly use steel, which contributes to increased vehicle weight and reduced fuel efficiency. In response to the growing demand for lightweight and sustainable automotive solutions, this study examines a hybrid ladder chassis design that incorporates Glass Fiber Reinforced Polymer (GFRP) in place of steel in selected low-load regions. Methods: The chassis was modelled using SolidWorks, adhering to standard industry design parameters. Finite Element Analysis (FEA) was conducted using ANSYS Workbench to simulate and evaluate the structural response of the chassis under various conditions, including static, dynamic, and torsional loads. In the hybrid model, GFRP replaced steel in areas identified as experiencing minimal stress to optimize weight without compromising performance. Key performance metrics such as stress distribution, deformation, and material efficiency were analysed. Results: Simulation results demonstrated that the hybrid chassis model achieved a significant reduction in overall weight compared to the conventional steel design. Stress and deformation analyses confirmed that GFRP components in low-stress regions maintained structural integrity under applied loads. The hybrid design showed acceptable safety margins and efficient material utilization. Discussion: The findings validate the feasibility of using GFRP in selected regions of the ladder chassis to reduce weight while preserving mechanical strength. The simulation results align with current automotive engineering trends that favor lightweight and high-performance materials. This hybrid approach not only supports improved fuel efficiency but also promotes the use of sustainable materials in vehicle design. Conclusion: The hybrid ladder chassis design integrating GFRP with steel presents a promising solution for reducing vehicle weight without compromising structural integrity. This research underscores the potential of composite materials in automotive applications and contributes valuable insights for the development of energy-efficient, environmentally friendly transportation systems.