A three‐dimensional hybrid finite element — spectral boundary integral method for modeling earthquakes in complex unbounded domains
A three‐dimensional hybrid finite element — spectral boundary integral method for modeling earthquakes in complex unbounded domains
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用于模拟复杂无界域地震的三维混合有限元谱边界积分方法
DOI:
10.1002/nme.6816
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发表时间:
2021
影响因子:
2.9
通讯作者:
Kammer, David S.
中科院分区:
文献类型:
--
作者:
Albertini, Gabriele;Elbanna, Ahmed E.;Kammer, David S.
We present a 3D hybrid method which combines the finite element method (FEM) and the spectral boundary integral method (SBIM) to model nonlinear problems in unbounded domains. The flexibility of FEM is used to model the complex, heterogeneous, and nonlinear part— such as the dynamic rupture along a fault with near fault plasticity—and the high accuracy and computational efficiency of SBIM is used to simulate the exterior half spaces perfectly truncating all incident waves. The exact truncation allows us to greatly reduce the domain of spatial discretization compared to a traditional FEM approach, leading to considerable savings in computational time and memory requirements. The coupling of FEM and SBIM is achieved by the exchange of traction and displacement boundary conditions at the computationally defined boundary. The method is suited to implementation on massively parallel computers. We validate the developed method by means of a benchmark problem. Three more complex examples with a low velocity fault zone, low velocity off‐fault inclusion, and interaction of multiple faults, respectively, demonstrate the capability of the hybrid scheme in solving problems of very large sizes. Finally, we discuss potential applications of the hybrid method for problems in geophysics and engineering.
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影响因子:
2.5
作者:
M. Breitenfeld;P. Geubelle
通讯作者:
P. Geubelle
影响因子:
--
作者:
Yihe Huang;J. Ampuero
通讯作者:
J. Ampuero
DOI:
10.1016/0022-5096(95)00043-i
发表时间:
1995-11-01
影响因子:
5.3
作者:
GEUBELLE, PH;RICE, JR
通讯作者:
RICE, JR
影响因子:
4.1
作者:
BERENGER, JP
通讯作者:
BERENGER, JP
影响因子:
2.8
作者:
Setare Hajaroalsvadi;A. Elbanna
通讯作者:
A. Elbanna