Abstract
This paper proposes a stable method for simulating brain tumor resection. During resection, soft tissues deform with local large rotation which is unacceptable with the small deformation theory. Furthermore, fracture simulation requires high computing cost and topology change which leads the simulation unstable. In order to calculate the large rotational deformation, we adopted corotational FEM. In addition, a stable element removal method for fracture simulation is developed. The method handles the singularity of tetrahedral mesh in real-time. Two simple fracture simulations show that these implementations works well. Finally, a brain tumor resection simulation is performed, in which instability is successfully avoided. These facts show that proposed methods are effective for simulating brain tumor resection.
