Real-time and physically realistic simulation of global deformation

Global Deformation Using Nonlinear FEM: We apply the displacement based finite element methods (FEM) to the simulation of large motions and global deformations of deformable objects. A linear strain model leads to unacceptable distortion (figure 1). To avoid this problem, we apply a quadratic strain instead (figure 1). Essentially this requires solving the following nonlinear system of differential equations