Experimental and Mathematical Study of Flexible–Rigid Rail Vehicle Riding Comfort and Safety
Source abstract
Abstract
This paper analyses the dynamic behavior of a rail vehicle using experimental and simulation analysis on a multi-rigid–flex body model. The mathematical models are developed considering the car body, bogie frame, and wheel axle for rail vehicles of rigid–flexible and multi-rigid formulations, taking the car body as rigid for the rigid body analysis and the flexible car body for flex–rigid analysis. A finite element model of the car body was developed in ANSYS, and substructure and modal analyses were performed. The mathematical model is validated through an experiment conducted by the Research Design and Standards Organization. Then, the validated model is further analyzed to evaluate the running comfort, using the Sperling ride index and the running safety, by investigating the derailment coefficient and wheel load reduction rate. The impact of flexibility on the vehicle’s running stability is investigated using the rigid body dynamics model and experimental data. Compared to experimental data, the simulation results reveal that elastic vibration cannot be neglected in vehicle dynamics, since the rigid–flexible coupling model is slightly more significant than the rigid-body model for ride comfort and safety.
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Research context
OpenAlex topics: Railway Engineering and Dynamics · Structural Engineering and Vibration Analysis · Mechanical Engineering and Vibrations Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Engineering & Applied Science, Gati Shakti Vishwavidyalaya, Vadodara 390004, India
Mechanical Engineering Department, Graphic Era (Deemed to be University), Dehradun 248002, India
Department of Smart Manufacturing Engineering, Changwon National University, Changwon 51140, Republic of Korea
School of Mechanical Engineering, Changwon National University, Changwon 51140, Republic of Korea
Funding
National Research Foundation of Korea (NRF) · Korea Institute of Energy Technology Evaluation and Planning (KETEP)
References (36)
Show source-provided references
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