Details
| Original language | English |
|---|---|
| Pages (from-to) | 211-221 |
| Number of pages | 11 |
| Journal | Computers and geotechnics |
| Volume | 110 |
| Early online date | 23 Feb 2019 |
| Publication status | Published - Jun 2019 |
Abstract
Model-based inverse problems emerge as an alternative means to reconstruct buried objects in structures. In this paper, we propose a method to detect multiple flaws in massive permeable structures. The extended finite element method (XFEM) is used as a tool to solve the coupled hydro-mechanical problem. Simultaneously, level set front propagation defined by Hamilton–Jacobi equations is adopted for solving the inverse problem of finding the material changes from measured data. A system of equations is proposed to derive the shape derivatives of the objective functions. The method is then applied to detect possible flaws in a masonry dam. The results obtained indicate that the method enables the efficient identification of hidden flaws in masonry dams.
Keywords
- Extended finite element, Flaws identification, Inverse problem, Level set, Masonry dam
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geotechnical Engineering and Engineering Geology
- Computer Science(all)
- Computer Science Applications
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In: Computers and geotechnics, Vol. 110, 06.2019, p. 211-221.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Identification of multiple flaws in dams using inverse analysis based on hydro-mechanical XFEM and level sets
AU - Nguyen-Tuan, Long
AU - Nanthakumar, Srivilliputtur Subbiah
AU - Lahmer, Tom
N1 - Funding Information: The research was supported by the Deutsche Forschungsgemeinschaft (DFG) under grant LA 2869/4-1 (project number 264166740), which is gratefully acknowledged by the authors. The authors additionally thank Prof. Tom Schanz from Ruhr-University Bochum for his exceptional scientific efforts and intensive support of young researchers.
PY - 2019/6
Y1 - 2019/6
N2 - Model-based inverse problems emerge as an alternative means to reconstruct buried objects in structures. In this paper, we propose a method to detect multiple flaws in massive permeable structures. The extended finite element method (XFEM) is used as a tool to solve the coupled hydro-mechanical problem. Simultaneously, level set front propagation defined by Hamilton–Jacobi equations is adopted for solving the inverse problem of finding the material changes from measured data. A system of equations is proposed to derive the shape derivatives of the objective functions. The method is then applied to detect possible flaws in a masonry dam. The results obtained indicate that the method enables the efficient identification of hidden flaws in masonry dams.
AB - Model-based inverse problems emerge as an alternative means to reconstruct buried objects in structures. In this paper, we propose a method to detect multiple flaws in massive permeable structures. The extended finite element method (XFEM) is used as a tool to solve the coupled hydro-mechanical problem. Simultaneously, level set front propagation defined by Hamilton–Jacobi equations is adopted for solving the inverse problem of finding the material changes from measured data. A system of equations is proposed to derive the shape derivatives of the objective functions. The method is then applied to detect possible flaws in a masonry dam. The results obtained indicate that the method enables the efficient identification of hidden flaws in masonry dams.
KW - Extended finite element
KW - Flaws identification
KW - Inverse problem
KW - Level set
KW - Masonry dam
UR - http://www.scopus.com/inward/record.url?scp=85061792966&partnerID=8YFLogxK
U2 - 10.1016/j.compgeo.2019.02.006
DO - 10.1016/j.compgeo.2019.02.006
M3 - Article
AN - SCOPUS:85061792966
VL - 110
SP - 211
EP - 221
JO - Computers and geotechnics
JF - Computers and geotechnics
SN - 0266-352X
ER -