Experimental Analysis And Structural Optimization Of A Steering Outer Tie Rod

The automobile steering outer tie rod is a component that plays an important role in the automobile steering system,which directly affects the steering stability,sensitivity and driving safety of the automobile.In order to ensure that the steering outer tie rod products can meet many performance requirements,ensure the stability of product performance,and improve production efficiency,it is necessary to optimize the structure of the steering outer tie rod.In this paper,the structure optimization of a certain type of steering outer tie rod is carried out through the combination of experiment and finite element method.The main research contents are as follows:The main product performance requirements of the steering outer tie rod include the pull-out force of the steering outer tie rod and the swing angle of the ball pin.To meet the two product requirements of the steering outer tie rod,the designer is required to control the product performance requirements in the product design stage.This article simulates the product performance by establishing a three-dimensional model and a finite element model of the steering outer tie rod.By comparing the results of the pull-out force test and the ball pin swing angle test,it proves the rationality of the three-dimensional model and the finite element model.Orthogonal test conducted range analysis to determine the main influencing factors that affect the pull-off force of the steering outer tie rod and the swing angle of the ball pin,and the optimal size combination was obtained,which improved the stability of product performance.Another important product requirement of the steering outer tie rod is the torque.In order to make the product torque value meet the production requirements and ensure the product torque value is stable,the product structure needs to be optimized.Through the design of orthogonal experiments on the main influencing factors,the actual product is produced,the torque is measured,and the test results are analyzed by range,to determine the main influencing factors that affect the torque of the steering outer tie rod,and then use the main influencing factors as the independent variable,torque The value is the dependent variable,the moment model is established and tested and verified.The dust cover of the outer steering rod is an important component of the product,and the damage of the dust cover is one of the important reasons for the failure of the outer steering rod.This paper designs a new type of dust cover structure,uses LS-Dyna software to analyze its dynamic strength to meet the strength requirements of the product.Subsequently,a muddy water durability test was carried out on the designed dust cover,and the test results were good,and the designed dust cover met the product performance requirements.In this paper,through the design of orthogonal test and finite element analysis,the product performance requirements of the steering pull rod are improved,and the steering outer tie rod is rationally optimized.The research conclusions also provide other types of steering outer tie rods.