Istrazivanja i projektovanja za privreduJournal of Applied Engineering Science


DOI: 10.5937/jaes0-42738 
This is an open access article distributed under the CC BY 4.0
Creative Commons License

Volume 21 article 42738 pages: 827-836

Huu Nhan Tran*
Faculty of Transportation Engineering, Ho Chi Minh City University of Technology (HCMUT) – Vietnam National University Ho Chi Minh City, 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam

Ngoc Dai Pham
Faculty of Transportation Engineering, Ho Chi Minh City University of Technology (HCMUT) – Vietnam National University Ho Chi Minh City, 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnamy

The influences of nonlinear suspension system with air spring and nonlinear asymmetrical (NA) absorber in comparison with a linear suspension is analyzed based on a lateral dynamic four degrees of freedom (4-DOF) model. The lateral dynamic model considers the effects of anti-roll bars, the roll center position, and the transient excitation of the road on the roll stability performance. The characteristics of the suspension system, the position of the roll center, the road excitation load all play very important roles in determining the roll stability of the vehicle. The maximum dynamic roll angle with nonlinear suspension is always smaller than that with linear suspension. The maximum dynamic rollover stability index is strongly dependent on the velocity and about 27% on average lower than that of linear suspension in the whole velocity domain, subjected under road excitation. However, the maximum of absolute acceleration is always larger with the nonlinear suspension system.

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We acknowledge Ho Chi Minh City University of Technology (HCMUT), VNU-HCM for supporting this study.

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