Study For Structure Intensity Of The Hydraulic Pressure Powering Steering Based On Thermal-structure

Analyzing the structure performance of the recirculating ball and hydraulic pressure power steering by FEA(Finite Element Analysis). Firstly,disperse the steering model and add boundary condition to the model according to the actual loading situation and DOF constraints.So the FE model is set up,then imput the FE model to ANSYS to calculate the intensity and rigidity of parts of the steering when pressure is 10MPa and 20MPa respective.Do bench test for the steering referring to QC/T529-2000and compare the results from FEA and bench test.It proved the FE model is right.The temperature of the steering will rise because of the fluent oil.So study the thermal-stress coupling analysis of the steering.The result shows that temperature has great influence to the rigidity of parts.The conclusion that FEA is feasible can be found through the contrast between the result of FEA and the result of bench test.Based on the conclusion a new analysis method can be found:First,analyze the dangerous state of the steering by FEA.Then check the steering by bench test to find the state with problem.Lastly,analyze the state by FEA to find the way to solve the problem.The new analysis method can get the situation between parts,displacement and stress of parts which can not be got from the bench test.So is can save the periods of designing and analyzing products,cut the designing cost,enhance reliability of products and so on.