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Suspension and chassis play a vital role in the structural performance of a Formula SAE vehicle. This paper focuses on CAE modeling and simulation study of the FSAE vehicle structure to analyze and improve its characteristics; and also the fabrication of the structure. This has been done for the current vehicle prepared according to 2014 Formula SAE rules; as part of Thapar University (TU) Formula student team - Team Fateh. The study started with Multi Body Dynamic (MBD) model building of front and rear suspension system using ADAMS/Car and Finite Element (FE) model building of space frame type chassis using HyperMesh for the current (2014) and previous (2011 and 2012) TU FSAE vehicles. The MBD model was used for carrying out kinematic analysis (suspension wheel travel) to calculate and analyze the roll centers using Design of Experiments (DOE) study.

Suspension and chassis play a vital role in the structural performance of an off-road vehicle. The paper focuses on Computer Aided Engineering (CAE) modeling and simulation study of an All Terrain Vehicle (ATV) structure to analyze its static and dynamic behavior. An integrated MBD-FEA approach used for analysis purpose has been presented. In the study, a Multi Body Dynamic (MBD) model of the ATV suspension system is built using ADAMS/Car. The effect of change in suspension hardpoints on suspension characteristics has been analyzed by carrying out Design of Experiment (DOE) study using ADAMS/Insight. This is done to minimize roll, camber and kingpin angle variation during vertical wheel travel, thus increasing stability of the vehicle under rough road conditions. This helps in optimizing the front and rear suspension geometry of ATV. The Finite Element (FE) model of ATV chassis is prepared to check its structural integrity.