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The pantograph-catenary (PC) system is an integral part of any electric railway infrastructure. Contact quality in PC systems has a significant impact on their operational efficiency, where contact loss and fluctuations are critical pain points. Modelling approaches widely used for simulating the PC system are penalty and Lagrangian methods. In this paper, the Lagrangian approach is used to impose an additional constraint called the gap function. The equations are modified and later iterated using the Generalised-α integrator. Post-model validation, a contact analysis study is performed for different configurations of the stationary lumped mass vibratory system.

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A Contact Quality Investigation of Vibratory Systems Interacting with Flexible Beam

  • 会议论文

  • 发表日期：

    2026年

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  • Yaswanth Bangi,
  • S. M. Sudhanva Nad Mattupalli,
  • Bhanu Vardhan Chennoju,
  • K. Rama Krishna,
  • Rajeevlochana G. Chittawadigi

摘要

The pantograph-catenary (PC) system is an integral part of any electric railway infrastructure. Contact quality in PC systems has a significant impact on their operational efficiency, where contact loss and fluctuations are critical pain points. Modelling approaches widely used for simulating the PC system are penalty and Lagrangian methods. In this paper, the Lagrangian approach is used to impose an additional constraint called the gap function. The equations are modified and later iterated using the Generalised-α integrator. Post-model validation, a contact analysis study is performed for different configurations of the stationary lumped mass vibratory system.