Application of Stress Inversion Method to Develop Crustal Deformation Monitor of Japanese Islands

2002 ◽  
pp. 301-309 ◽  
Author(s):  
Muneo Hori ◽  
Teruyki Kato ◽  
Kenji Oguni ◽  
Takeshi Iinuma
Keyword(s):  
Crustal Deformation ◽  
Inversion Method ◽  
Stress Inversion ◽  
Japanese Islands

Application of Hybrid Genetic Algorithm in Ground Stress Inversion

2011 ◽  
Vol 90-93 ◽  
pp. 337-341
Author(s):  
Ran Gang Yu ◽  
Yong Tian
Keyword(s):  
Neural Network ◽  
Genetic Algorithm ◽  
Neural Networks ◽  
Bp Neural Network ◽  
Local Minimum ◽  
Hybrid Genetic Algorithm ◽  
Inversion Method ◽  
Stress Inversion ◽  
Neural Network Inversion ◽  
Ground Stress

This paper propose genetic algorithm combined with neural networks, greatly improving the convergence rate of neural network aim at the disadvantage of the traditional BP neural network inversion method is easy to fall into local minimum and slow convergence.Finally, verified the feasibility and superiority of the above methods through the successful initial ground stress inversion of actual project.

Crustal Deformation Associated with the 2011 Tohoku-Oki Earthquake: An Overview

2013 ◽  
Vol 29 (1_suppl) ◽  
pp. 81-98 ◽  
Author(s):  
Manabu Hashimoto
Keyword(s):  
Crustal Deformation ◽  
Large Displacements ◽  
Sea Floor ◽  
Gps Network ◽  
Coseismic Subsidence ◽  
Japanese Islands ◽  
East West

The 2011 Tohoku-oki earthquake generated large displacements in and around the Japanese islands that were detected by the nationwide GPS network, sea-floor geodetic surveys, and space-borne radars. The east-west extension exerted on the Japanese islands by this event induced inland events of Mw6 or larger earthquakes. Coseismic subsidence of up to 1 m was observed along the coast where subsidence was found during the interseismic period. This observation contradicts expectations based on the concept of the recurrence of inter-plate earthquakes. Therefore, postseismic motions or other large events are expected to resolve this paradox.

scholarly journals A stress inversion method requiring only fault slip sense

2001 ◽  
Vol 106 (B2) ◽  
pp. 2281-2289 ◽  
Author(s):  
Richard Lisle ◽  
Tobore Orife ◽  
Luis Arlegui
Keyword(s):  
Fault Slip ◽  
Inversion Method ◽  
Stress Inversion

Stress inversion method and analysis of GPS array data

2008 ◽  
Vol 336 (1-2) ◽  
pp. 132-148
Author(s):  
Muneo Hori ◽  
Takeshi Iinuma ◽  
Teruyuki Kato
Keyword(s):  
Inversion Method ◽  
Stress Inversion ◽  
Array Data

scholarly journals A Generalized Stress Inversion Approach With Application to Residual Stress Estimation

2020 ◽  
Vol 87 (11) ◽  
Author(s):  
Mark J. Chen ◽  
Wilkins Aquino ◽  
Timothy F. Walsh ◽  
Phillip L. Reu ◽  
Kyle L. Johnson ◽  
...  
Keyword(s):  
Residual Stress ◽  
Large Scale ◽  
Optimization Methods ◽  
Image Correlation ◽  
Free Form ◽  
Inversion Method ◽  
Stress Inversion ◽  
Generalized Inversion ◽  
Stress Estimation ◽  
Matrix Free

Abstract We develop a generalized stress inversion technique (or the generalized inversion method) capable of recovering stresses in linear elastic bodies subjected to arbitrary cuts. Specifically, given a set of displacement measurements found experimentally from digital image correlation (DIC), we formulate a stress estimation inverse problem as a partial differential equation-constrained optimization problem. We use gradient-based optimization methods, and we accordingly derive the necessary gradient and Hessian information in a matrix-free form to allow for parallel, large-scale operations. By using a combination of finite elements, DIC, and a matrix-free optimization framework, the generalized inversion method can be used on any arbitrary geometry, provided that the DIC camera can view a sufficient part of the surface. We present numerical simulations and experiments, and we demonstrate that the generalized inversion method can be applied to estimate residual stress.

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