中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
An efficient and robust method for structural distributed load identification based on mesh superposition approach

文献类型:期刊论文

AuthorLiu, He2,3,4; Liu, Quansheng1,4; Liu, Bin4; Tang, Xuhai1; Ma, Hao1; Pan, Yucong1; Fish, Jacob2
SourceMECHANICAL SYSTEMS AND SIGNAL PROCESSING
Issued Date2021-04-01
Volume151Pages:30
KeywordDistributed load identification Inverse analysis Tikhonov regularization Non-negative least-squares
ISSN0888-3270
DOI10.1016/j.ymssp.2020.107383
English AbstractAccurate load identification is vital for the structural optimization design and the structural health monitoring in different engineering disciplines. However, the external loads usually are difficult to determine with direct measurements. In the present manuscript, an efficient and robust method is proposed to identify the distributed static or quasi-static loads on linear-elastic structures. The superimposed loading mesh approach is proposed to map the unknown loads, and nodal values of the superimposed loading mesh are taken as inverse variables in the inverse problem. With this strategy, the inverse problem is converted to solving a set of linear equations which maps the relationship between the inverse variables and measured responses. To find the optimal solution, the modified second-order Tikhonov regularization method (TRM) is employed. Furthermore, to ensure the nonnegativity of the identified loads, the non-negative least squares (NNLS) is applied. Three numerical tests are employed to verify the feasibility of the proposed method. The results suggest that the distributed loads can be accurately identified, and that the inverse system is well-posed. The proposed method has been found to be robust that reasonable accuracy can be obtained even with significant measurement error. (C) 2020 Elsevier Ltd. All rights reserved.
Funding ProjectJoint PhD Training Program of the University of Chinese Academy of Sciences ; Young Scholars Program of National Natural Science Foundation of China[41807250] ; Young Scholars Program of National Natural Science Foundation of China[41907256]
WOS Research AreaEngineering
Language英语
PublisherACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
WOS IDWOS:000640530600019
源URL[http://119.78.100.198/handle/2S6PX9GI/27269]  
Collection中科院武汉岩土力学所
Corresponding AuthorLiu, Quansheng
Affiliation1.Wuhan Univ, Sch Civil Engn, Key Lab Safety Geotech & Struct Engn Hubei Prov, Wuhan 430072, Hubei, Peoples R China
2.Columbia Univ, Dept Civil Engn & Engn Mech, New York, NY 10027 USA
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Liu, He,Liu, Quansheng,Liu, Bin,et al. An efficient and robust method for structural distributed load identification based on mesh superposition approach[J]. MECHANICAL SYSTEMS AND SIGNAL PROCESSING,2021,151:30.
APA Liu, He.,Liu, Quansheng.,Liu, Bin.,Tang, Xuhai.,Ma, Hao.,...&Fish, Jacob.(2021).An efficient and robust method for structural distributed load identification based on mesh superposition approach.MECHANICAL SYSTEMS AND SIGNAL PROCESSING,151,30.
MLA Liu, He,et al."An efficient and robust method for structural distributed load identification based on mesh superposition approach".MECHANICAL SYSTEMS AND SIGNAL PROCESSING 151(2021):30.

入库方式: OAI收割

来源:武汉岩土力学研究所

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