Outrigger design & development for vehicle testing as per AIS 133

The outrigger is mounted on the test vehicle during handling test maneuvers, such as double lane change, constant radius cornering, J-turn, etc. The aim of these outriggers is to protect the driver & vehicle with minimum effect on the vehicle's inertia while testing vehicle stability during sudden turns as per AIS 133 which might result in the rollover of the vehicle. The paper discusses design which includes load path analysis, material comparison to maximize strength per unit weight, shape, dimensional finalization, etc. Torsion is generated when the skidpad comes in contact with the ground which we have tried to balance in the free body diagram (FBD) by changing the skidpad contact point for reducing the stress. From the FBD, the following points have been carefully observed to only put material where it is required:- 1. Vertical bending load 2. Longitudinal bending load due to friction 3. Torsion 4. Compressive load 5. Moment due to compressive load 6. Buckling load Finite element analysis is done on the design developed after setting boundary conditions arrived from FBD. The developed design is then manufactured and successfully implemented in the testing of vehicles as per AIS-133.