Design and Virtual Validation of a Coil-Spring Cab Suspension System for a Heavy Commercial Vehicle
Year: 2025
Type: article
Abstract: This paper details a structured methodology for designing and validating a coil-spring cab suspension system for a heavy commercial vehicle (HCV) to enhance driver ride comfort.The design process focuses on isolating the cabin from road-induced chassis vibrations.Key inputs include vehicle weight distribution and data obtained through road load data acquisition (RLDA).A single-degree-of-freedom base excitation model is utilized to set a target natural frequency of 2 Hz for the cab suspension.Detailed calculations determine the stiffness and geometrical parameters for the front and rear coil springs.The performance of the designed system is virtually validated using Multi-Body Dynamics (MBD) analysis in MSC ADAMS.Simulations for standard ride events, such as rough road and low-speed bumps, yield a Ride Quality Number (RQN) between 6.5 and 7.5, indicating satisfactory performance.A comparative analysis confirms the superiority of the four-point coil spring configuration over alternative design schemes.The study concludes that an integrated approach, combining theoretical calculations with advanced CAE tools, is effective for developing a costeffective and performance-optimized cab suspension.
Source: IARJSET
Author: Prasad U Kulkarni
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4415242283
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