Title: Modelling of integrated bio-dynamic human model with full car using bond graph for IRC:99-1988 bump

Authors: Lalit Batra; Sanjay Kumar; Saurabh Kumar Agrawal

Addresses: Department of Mechanical Engineering, Delhi Technological University, Delhi, 110042, India ' Department of Mechanical Engineering, Delhi Technological University, Delhi, 110042, India ' Bharati Vidyapeeth College of Engineering, New Delhi, 110063, India

Abstract: One of the most intriguing topics for researchers in the area of vehicle dynamics is the use of vehicle vibration to analyse dynamic behaviour. The primary goal of this research is to examine the dynamic behaviour of a road vehicle under various road conditions. In this study, an integrated computer model is developed through the bond graph methodology to analyse the dynamic behaviour of a large road vehicle. The initial stage is to create the 3D models of each vehicle base, suspension unit, tyre, seat, and joint as bond graph elements with power ports for physical connections. This work demonstrates the dynamic behaviour of the 4 DOF lumped human biomechanical model coupled with an 11 DOF full-car vehicle model using the bond graph simulation technique. Ride comfort conditions as per ISO 2631:1997 standards are used to validate the dynamic response of the bio-dynamic human coupled with a full car. Various other dynamic responses in the time domain have been captured in simulation for the conditions where the vehicle passes over different bumps of the same height and width of 1 m, 2 m and 3.7 m with a 40 km/h speed. Additionally, RMS responses have been studied for different vehicle velocities. The results presented in the paper show the fascinating behaviour of full-car vehicles.

Keywords: integrated model; biodynamics bond graph; human model; dynamic simulation.

DOI: 10.1504/IJVD.2024.146778

International Journal of Vehicle Design, 2024 Vol.96 No.3/4, pp.302 - 326

Accepted: 24 Jan 2025
Published online: 17 Jun 2025 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article