On the simulation-based objective estimation of road vehicle ride comfort

Ride comfort is essential for the road vehicles due to the customer demand in the current automotive industry. Assessment of ride comfort is required to evaluate and improve human comfort in the car. Objective assessment of ride comfort considerably helps to reduce the cost, time, and risk compared to the subjective assessment which requires actual road tests. In this paper, design and implementation of equivalent digital filters for ISO 2631 and 5349 weighting factors are performed. Furthermore, a 3D passive MBS-based Human Biomechanical Model (HBM) of a seated human is proposed for the objective assessment of ride comfort. These two developments are then used for estimation of ride comfort for a ride dynamic model. Comparison between the result obtained from the ISO standard and the proposed HBM shows the usability of the proposed HBM for vehicular comfort studies.