2022-12-07T14:17:27Z
https://u-ryukyu.repo.nii.ac.jp/oai
oai:u-ryukyu.repo.nii.ac.jp:02002259
2022-02-14T21:30:34Z
1642837622505:1642837957109:1642837977633
1642838403551:1642838406414
Simulation of role of decollement slope and surface slope angles to the stress field in accretionary wedge
Morishita, Tadayoshi
Hayashi, Daigoro
林, 大五郎
The purpose of this study is to estimate the effect of surface slope-angle (α), decollement slope-angle (β) and boundary condition to the stress field within accretionary wedge by using finite element method (FEM). We impose four types of boundary conditions along the base of four types of models. These boundary conditions are expressed by liner, quadratic (convex and concave) and cubic function. Four types of models have different decollement slope and surface slope.\nComparing with two models (models B and C) which have different decollement slopeangle (β), the decollement slope-angle (β) affect weakly to stress field. On the other hand, comparing with the other two models (models A and C) which have different surface slopeangle (α), the surface slope-angle (α) affects fairly to stress field. Failure area propagates wider to the tip of model as the surface slope-angle (α) becomes gentler. However the more effective factor to decide the propagation of failure area is the difference of boundary conditions. Each boundary condition has different tendency of propagation of failure area. The most widely spread failure area is calculated under the boundary condition 3 and followed in the order of boundary condition 2, 1 and 4.
紀要論文
http://purl.org/coar/resource_type/c_6501
琉球大学理学部
VoR
http://hdl.handle.net/20.500.12000/2616
0286-9640
AN00250774
琉球大学理学部紀要
Bulletin of the College of Science. University of the Ryukyus
76
93
75
eng
open access