A Proposal for an Element Division Determination Technique for Finite Element Wave Propagation Analysis

作者：Ishida Hitoshi^*; Meshii Toshiyuki

来源：Materials Evaluation, 2010, 68(9): 1021-1029.

• elastic waves
• acoustic waves
• finite element analysis
• element size
• time increment
• strain energy

This study proposed an element size selection technique, named the impact meshing technique, for a finite element wave propagation analysis model, which was characterized by determination of element division of the model with strain energy in the whole model and by static analysis (dynamic analysis in a single time-step) with boundary conditions, which are a maximum change of displacement in a time increment and inertial (impact) force caused by the displacement change. In this paper, examples of application of the impact meshing technique for the 3D ultrasonic wave propagation problem in elastic solids and the 2D acoustic wave propagation problem in fluid were described. Furthermore, the advantage of the impact meshing technique was represented by reduction of calculation time for determination of element subdivision compared with the conventional procedure with a dynamic transient analysis.

• 出版日期2010-9