SURFACE ELEMENT LAYER FORMING METHOD FOR IMPROVING SHAPE OF HEXAHEDRAL ELEMENT GRID TO BE USED FOR FINITE ELEMENT METHOD

摘要

PURPOSE: A surface element layer forming method for improving shape of hexahedral element grid to be used for finite element method is provided to improve quality of hexahedral element grid and precession of prediction at analysis by modifying location of nodal point and structure of surface element layer. CONSTITUTION: A virtual thin film surface element layer is formed by designating connectivity of nodal point for new element after forming new nodal point at the very much thin offset location in the searched direction, searching offset vector toward outside direction from each nodal point using surface information, sharp edge information, peaked vertex information from surface information of above grid. Finite element method modifies location of nodal point at peaked vertex, nodal point at sharp edge, surface nodal point, and inside nodal point that is formed on virtual thin film surface element layer. Method for forming surface element layer improves hexahedral element grid to be used for finite element method.