Work

Parameter identification of rock mass in the time domain

Year: 2024

Type: article

Abstract: A time domain rock mass parameter identification method considering the Rayleigh damping is proposed in this paper. Starting with a set of initial parameter values, the algorithm solves the finite-element (FE) equations updating the parameters in each iterative step until the result converges to a local optimum. Numerical FE analysis, displacement sensitivity analysis, and the truncated singular value decomposition method are integrated into the solution algorithm for parameter identification. The technique introduced is verified in numerical studies with in-situ experiments of rock mass structures. Our results show that the approach, compared with conventional methods, can reduce ambiguities caused by inadequate data and provide more accurate insights into the subsurface for rock mass quality evaluation.

Source: Scientific Reports

DOI: 10.1038/s41598-024-74850-2

Authors: Rui Huang, Takafumi Seiki, Qinxi Dong, Satoshi Yamaoka, Ömer Aydan

Institutions: Xihua University, Utsunomiya University, Hainan University, University of the Ryukyus

Language: English

Topic: Rock Mechanics and Modeling

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,590

Funder: State Key Laboratory of High Performance Civil Engineering Materials