A GENERAL BOUNDARY CONDITION IN 3D HYBRID WAVE INJECTION MODELING BASED ON ALTERMAN AND KARAL (1968) METHOD
This paper describes the generalized hybrid approach of wave injection for elastic linear case originated by Alterman and Karal (AK) in 1968 as a domain coupling technical algorithm. The general approach is described by binding two sub-volumes treated per partes by arbitrary wave-propagation methods. The generalized AK two-step procedure possibly combines the source and path e.ects computed by one arbitrary method and local site e.ects computed by another (arbitrary) method using the .rst methods wave .eld as input. The advantage of the approach arises from the fact that the connection between the methods keeps the formal wave-injection boundary perfectly permeable for any part of the wave .eld and can be applied to a variety of hybrid formulations. This hybrid approach leads to more e.ective modelling of combined source, path and site e.ects (e.g., by multiple second step computations with varying structure, using single .rst step input), saving computer memory and time. The main innovation of the paper is the generalization of the boundary condition acting between two complementary sub-volumes of AK hybrid wave-propagation methods.
Hybrid methods seismic waves modelling wave-.eld injection source box method DRM (domain reduction method) parameter studies complex local structures.
I. Oprsal1 C. Matyska K. Irikura
Disaster Prevention Research Institute DPRI,Kyoto University,Gokasho,Uji,Kyoto,611-0011,Japan; io@ka Charles University,Faculty of Mathematics and Physics,Department of Geophysics,V Holesovickach2,180 Aichi Institute of Technology,Faculty of Engineering,Department of Urban Environment,DisasterPrevent
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）