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<p>The energy dissipation in leaf spring suspensions primarily occurs due to frictional damping. These suspensions have inherent inter-leaf friction. It is important to understand its dependence on the load, amplitude, and frequency of road excitation. In this paper, <i>three</i> different leaf springs were subjected to several load cases and the hysteresis loops were obtained. The leaf springs were tested on an MTS 850.23 damper test rig to get the load versus displacement hysteresis loops. These hysteresis loops are then fitted using <i>three-dimensional</i> finite element (FE) simulations of the leaf springs modeled in ABAQUS. Next, multibody dynamic (MBD) simulation models of <i>intermediate</i> complexity were developed in ADAMS which are computationally less evasive as compared to the FE models. Finally, all loops so obtained were fitted using a simple, parsimonious but highly accurate two-state hysteresis model with merely <i>five</i> fitting parameters. The merit of the two-state model is that it can capture both major and minor hysteresis loops which is not possible with the conventional Bouc–Wen model and other scalar hysteresis models. All three models so developed match fairly well with experimental results.</p>

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A Comprehensive Experimental and Numerical Study of Hysteretic Characteristics of Leaf Spring Suspensions

  • 期刊论文

  • 发表日期：

    2025年4月21日

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  • Khogesh Kumar Rathore,
  • Abhimanyu Pratap Singh,
  • Husain Kanchwala,
  • Saurabh Biswas

摘要

The energy dissipation in leaf spring suspensions primarily occurs due to frictional damping. These suspensions have inherent inter-leaf friction. It is important to understand its dependence on the load, amplitude, and frequency of road excitation. In this paper, three different leaf springs were subjected to several load cases and the hysteresis loops were obtained. The leaf springs were tested on an MTS 850.23 damper test rig to get the load versus displacement hysteresis loops. These hysteresis loops are then fitted using three-dimensional finite element (FE) simulations of the leaf springs modeled in ABAQUS. Next, multibody dynamic (MBD) simulation models of intermediate complexity were developed in ADAMS which are computationally less evasive as compared to the FE models. Finally, all loops so obtained were fitted using a simple, parsimonious but highly accurate two-state hysteresis model with merely five fitting parameters. The merit of the two-state model is that it can capture both major and minor hysteresis loops which is not possible with the conventional Bouc–Wen model and other scalar hysteresis models. All three models so developed match fairly well with experimental results.