有限要素法による断層モデルの解析法に関する基本的検討(一般セッション,口頭発表)

概要

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This paper dealt with the fault rupture simulation technique that used finite element method (FEM). First, we examined the dependency of obtained waveforms such as acceleration, velocity and displacement on the mesh size of the finite element model and obtained the relationship between the mesh size and the upper limit of frequency that can express accelerograms in good accuracy. Next, we investigated the relationship between the magnitude of average dislocation and the stress drop depending on the depth of the fault from the ground surface. For the deep fault and the fault which reached the ground surface, the relationship coincided with that from the theoretical solution, however, for the shallow fault, the magnitude of the average dislocation increased as the fault approached the ground surface for the same stress drop.
地域安全学会の論文