Pressure resistance and dynamic response analysis of different magnetic blood pump base

This paper aims to explore the pressure resistance and vibration resistance performance of different magnetic blood pump base materials to help obtain the best material suitable for a centrifugal blood pump base. We establish a centrifugal blood pump model through CREO and combine it with ANSYS for simulation analysis, exploring the pressure resistance of PC, PVC, PP, PE, PA, POM, PBT, and ABS, and then the vibration resistance was investigated by dynamic response analysis. The results show that under the same conditions, pressure resistance is as follows: PVC > PE > POM > PC > ABS > PBT > PA > PP; vibration resistance is PE > PVC > ABS > PC > POM > PBT > PA > PP. PE with 2-mm thickness is the best choice of the base; at this time, the maximum deformation of the base is 0.133 mm, the maximum stress is 3.188 MPa, the first order frequency is 1311.6 Hz, and the maximum amplitude is 0.54 mm, which meets the requirements of the safety design.