Fatigue Life Analysis Of Profiled Plate Spring Tie

With the rapid development of automobile industry, people pay more and more attention to flat tire is one of the security risks of the cars. In order to solve this problem, Safety ties or Non-Pneumatic Tires are used in the market, but their limitations need to be perfected. Based on Safety ties or Non-Pneumatic Tires, this paper proposed a new conception of the tie named plate spring tie, the analysis of static strength and prediction of fatigue life of Profiled plate springs are discussed.In terms of theory, profiled plate springs elastically bent under moving. Based on the basic equations of elastic deformation, the radius of curvature formula and the moment formula of spring leaves are derived; Cross-section of the sheet can be reduced to an I-beam structure is a portfolio structure, using the feature of combinations for solving moment of inertia formula; In the calculation, the spring plates need to meet the strength requirements. At the same time, the estimation formula of structural life should be further deduced.In the finite element numerical simulation, this paper using finite element software PATRAN builds finite element model of spring plate and obtains the tensile stress cloud and the maximum stress node region after the static load analysis. Combined with the stress of the outcome document, using FATIGUE analyze the fatigue life of hazardous areas, this process need new and amend S-N curve of materials, set up the material information and loading information.In this paper, using material mechanics, finite element analysis and structural fatigue life theory combined with the finite element software and professional fatigue life software analyze static-loading analysis and fatigue life analysis of profiled plate springs.