3次元時間域動弾性問題における境界積分方程式法のアルゴリズム改良と並列化

抄録

Analyses of various real world problems related to elastic wave propagation reduce to large scale problems of three dimensional elastodynamic BIEM (boundary integral equation method) in time domain. Conventional approaches in BIEM, however, are quite expensive in large scale problems in terms of both memory requirements and the CPU time. We therefore propose improved algorithms for 3 dimensional elastodynamic BIEM in time domain and parallelize the code using MPI in order to reduce the memory requirements and the CPU time. The efficiency of the improved code is demonstrated with simple crack problems, as well as with more realistic wave analysis related to crack determination.