[The emulation of aortic valve vibration during early diastole]

A finite element aortic valve model is described. The geometry and material property of the model are more exact than before. The finite element dynamic analysis was used to, emulate the closed valve motion during the early diastole. The results of emulating demonstrate that the closed valve vibrates during early diastole. They also reveal that the increase in stiffness of valve, the augmentation thickness of valve, the decrease in the rate of change of the pressure, and the reduction of the initial pressure may affect the vibration and cause the diminution of the aortic component of the second heart sound.