METHOD AND SYSTEM FOR SIMULATING LARGE DEFORMATION AND/OR ROTATION OF STRUCTURE USING IMPROVED SOLID FINITE ELEMENT METHOD

摘要

PPROBLEM TO BE SOLVED: To provide special purpose finite elements suitable for analyzing large deformations and/or rotations of a structure such as an automobile, an airplane. PSOLUTION: According to one aspect, a special purpose solid finite element is configured for simulating the large deformations and/or the rotations of the structure. The special purpose solid finite element comprises only corner nodes with each node having six degrees-of-freedom (DOF), three translational and three rotational. In other words, each node is configured to include translational deformation and rotation deformation, each of the translational and rotational deformation has three components corresponding to one of the six DOFs. According to another aspect, the special purpose solid element has a plurality of external edges. Each external edge has two ends, each end is located at one of the adjacent corner nodes. Additionally, translational deformation at mid-edge point of each external edge is implicitly embedded in the translational and rotational deformations of two adjacent corner nodes. PCOPYRIGHT: (C)2010,JPO&INPIT