Constitutive modelling of abdominal organs

摘要: Abdominal organs are very susceptible to trauma. In order protect them properly against car crash and other impact consequences, we need be able simulate the abdominal organ deformation. Such simulation should account for proper stress-strain relation as well stress dependence on strain rate. As step in this direction, paper presents three-dimensional, non-linear, viscoelastic constitutive models liver kidney tissue. The have been constructed basing vivo experiments conducted Highway Safety Research Institute Medical Centre of University Michigan (Melvin et al., 1973). proposed valid compressive nominal strains up 35% fast (impact) rates between 0.2 22.5 s(-1). Similar can find applications computer robot assisted surgery, e.g. realistic surgical procedures (including virtual reality) non-rigid registration.