Strength Analysis And Optimal Design Of The Articulated Tracked Vehicle Suspension

All terrain articulated tracked vehicle has a very good driving perform ance,free to travel in th e shoals,s wamps,jungles and snow and other poor road conditions.In such severe operating conditions,the w alking system,as a device directly contacts with the ground,its safety is particularly important.The suspension device studied in this paper is one of the most important devices in the walking system.Firstly,the walking system model is established by Recurdyn simulation software.Then import the three-dimensional model of the ve hicle body in Pro/E in to Recurdyn simulation software,and assemble it with the walking system to generate a vehicle model.The dynam ic simulation of the vehicle is carried out in four typical working conditions:turn in situ,across 0.6-meter-high vertical wall,over 1.8-m etre-wide trench,and clim bing 20 degree slope.Through this way,we can find out the m ost dangerous load condition of the suspension in each condition,and analyse the results.Secondly,the three-dimensional model of the suspension device is established in Pro/E,and the m eshing process is introduced into the Hypermesh software.The stress of the suspension is extracted by the previous dyna mic simulation,and the ANSYS finite elem ent calculation is carried out.Thr ough the proper analysis of the stress-strain cloud diagram and the co mparison with the a llowable stress of the m aterial,its safety can be verified.Meanwhile,find the location of the maximum stress for the future design and processing of enterprises to provide a reference,and fi nd the lar gest displacement of the workin g conditions for the drivers' safe driving.Finally,in order to save costs,reduce th e weight of the suspension and i mprove the vehicle's driving performance,the topological optimization design of the balance elbow is out in Opti Struct.The final model is based on the optimized model and the improvements made by the enterprise expert.Then,ANSYS fin ite element analysis of the above dangerous conditions is carried out for the final m odel,and a series of contrasts are m ade before and after the optimization to verify the correctness of the m odel after optimization.The final results show that the optimized balance elbow is safe and reliable,with a weight reduction of 3.8 kg and a weight loss of 24%.