The Inversion Simulation And Analysis Of Rubber Diaphragm Structure For Volumetric Artificial Heart Pump

Heart is an important organ of human body,is the power of human blood circulation system,is the power of human blood circulation system.The main function of the artificial heart pump is to replace the heart to promote blood flow.Therefore,the heart pump is the last straw to save life,with other technologies irreplaceable status.Taking the rubber diaphragm of the positive displacement artificial heart pump as the object of study,it is of great engineering application and practical value to explore whether the rubber diaphragm is flipped or not,which directly determines the life of the artificial heart pump.In this paper,the rubber diaphragm was studied as research object from these aspects:(1)The nonlinear finite element software Abaqus was used to establish the parametric model of the rubber diaphragm in 3d shell element,and the numerical simulation of the process of its overturning deformation was carried out to explore the phenomenon of the rubber diaphragm structure overturning under the dual nonlinearity of constitutive and large deformation.(2)Through finite element simulation,the key parameters affecting the rubber diaphragm turnover are discussed.The influence of parameters such as diaphragm thickness,diaphragm height and prebending size on rubber diaphragm overturning process.(3)Design of rubber diaphragm for positive displacement diaphragm heart pump.This paper presents a new method to calculate the relationship between the discharge liquid product of rubber diaphragm and the pressure load,and designs a reasonable rubber diaphragm.