ボクセル有限要素法による鋼構造物の三次元超音波探傷シミュレーション
2008 年 15 巻 59 号 p. 57-64
詳細
2008 年 15 巻 59 号 p. 57-64
A numerical simulation system of ultrasonic tests is developed for characterizing the wave motions in steel structures with complicated shape. Geometry of 3D domain is generated by CAD software and converted into 3D volume picture elements (voxels), each of which is recognized as a finite element in the so-called voxel finite element method (FEM). An explicit scheme is employed in the dynamic voxel-FEM and is incorporated with parallel processing with MPI for large scale computations. After verifying the validity of the developed method, representative numerical examples are presented to demonstrate the capability of the system in visualizing the wave propagation phenomena to presumably detect the defects in joints embedded in steel structures.
