Structural Mechanics Analysis And Research On The Slider Of The Tire Mould

The slider is one of the main parts to realize the movement of the tire mould opening and closing and to bear the pressure.In this paper,stress,strain and fatigue of the slider are studied according to its actual working condition(therm-force coupling).Topology optimization is carried out according to the topological optimization theory.This paper takes the slider of all-steel and semi-steel tire mould as the research object and discusses the processing technical requirements and processing technology of the slider.The mathematical model of the slider is established based on the theory of mechanics,and the calculation formulas of minimum cantilever thickness,back area and radial length of base are derived.Finite element software ABAQUS was used to analyze the stress,strain and topology optimization of the slider.Its fatigue life was analyzed by using software FE-SAFE.The results show that the maximum equivalent stress and vertical displacement of the slider are affected by the change of material,the structure of the upper cover and the angle of the slider.The equivalent stress and vertical displacement increase after the angle decreases,but less than the design value of the allowable stress and displacement which can save materials.The increasing of the thickness of the upper cantilever of the slider can effectively improve the life of the slider in the service process and the fatigue life of the slider increases with the increasing of the cantilever thickness.The volume of the slider decreased significantly after the optimization of the model.The maximum equivalent stress could be effectively reduced and the fatigue life was continuously increased when the length of the right angle edge at the cantilever was increased.