Design of multi axle and multi-mode steering system for HMV 8x8 and HMV 12x12 vehicle

Background:

HMV 8x8 and HMV 12x12 vehicles are  used for transporting large and sensitive payloads on various terrains where trailers cannot be used. Being a very long vehicle, for good manoeuvrability these kind of vehicles require multi axles steering capabilities including the rear axle steering systems with multiple models like front 2 and rear two axle steering, crab steering and all wheel steering.

Challenge:

• Preliminary design calculation to arrive at the steering geometry and kinematic design.
• Determine Front and rear wheel cut angles achievable.
• Ensure design meets the steering effort and dynamic performance requirements.
• Determine and finalise the hydraulic circuit and electronic control circuit required for meeting the system requirements.
• Carry out ADAMS, AMESim, FEA simulations based on design methodology required for design verification.
• Sizing and optimising of linkage components.

Future Expectation from the prototype / Technology developed

The proto of proposed design shall be developed and engineered on the vehicle for performance monitoring and proto evaluation.  After design completion and proto validation of the design, the same will be extended for BEML HMV 8x8 and 12x12 vehicles.