A Comparison Study between Tetrahedral Mesh and Hexahedral Mesh

A lot of effort has been dedicated to achieving realism in simulation of deformable objects such as cloth, hair, rubber, sea water, smoke, and human soft tissue in surgical simulation. However, the deformable object in the scene will exhibit physically correct behaviors true to the behaviors of real object when any force applied to it, and some time it requires real-time simulation whatever the complexity of its geometry, as in surgery simulation. It attracted the attention of a wide community of researchers such as, computer scientists, mechanical engineers, biomechanics, and computational geometers. In this paper we have made a comparison between tetrahedral and hexahedral mesh in terms of stretch and applied on the human liver –as case study- and compared to the maximum tensile and accuracy of the two types in simulating the reaction of the organs using the finite element method.