Performance Analysis Of Typical Rubber Elastic Element And Its Experimental Tooling Design

Based on modern rail transit vehicles typical rubber elastic components:traction with rubber ball joints of suspension, a series of suspension of thetapered spring, with the department of suspension of the rubber with asthe research object, its main performance test, this paper discusses themain factors of influence the performance; At the same time usingABAQUS finite element analysis software simulation modeling, analyzesits stiffness properties, predicted fatigue failure point; And the ball jointsin the testing of the typical deflection fatigue test equipment to carry onthe design. The main contents of this article are as follows:1. Through extensive reading of the literature material, summarized therail traffic commonly used rubber components elastic kinds and action;Introduces the key components elastic rubber performance and its testmethod; Were described in detail the mechanical properties of the rubbermaterial, material constitutive model.2. The three typical components elastic rubber main performance:static stiffness, dynamic stiffness, creep, fatigue and performance test,analysis of temperature, time, being connected to park sample size force,The Times of fatigue cycle load of rubber components elastic mainperformance static stiffness, dynamic stiffness, the influence of the creepproperties. Higher temperatures will lead to rubber components elastic,static stiffness of the reduction of dynamic stiffness, the increase ofvermicular variables, creep, short lives; Rubber components elastic bearcycle load, fatigue times and the stiffness is proportional to the loss rate,when fatigue to2×106million times the number, equivalent to the actualoperation7×104km, stiffness loss rate of more than15%, can determinetheir failure.3. The three typical rubber components elastic finite element modelinganalysis, the constitutive model selection, the shape of the grid, and thesize of mesh to affect the results of analysis.3NR60material selectingOgden (N＝3) model, natural rubber material selecting Mooney-Rivlinmodel; Rubber ball joints, tapered spring, rubber pile of network forms are the ladder of network, radial grid, cricoid grid; Tapered reed mesh isset to0.5mm; The conclusions show that the finite element analysisresults are in good agreement with the tested, the error within10%.4. According to ball joints products complex test condition, successdesigned the deflection of a set of general fatigue test equipment, and theset of jig key parts were force analysis, intensity and the fatigue life of thecalculation, the analysis results show that the set of fixtures of strengthand fatigue performance will meet the test requirements, and general high,low cost.