https://scholars.lib.ntu.edu.tw/handle/123456789/80580
標題: | Direct identification of non-uniform beams using static strains | 作者: | PEI-LING LIU Lin, Hwei-Tser |
公開日期: | 1996 | 卷: | 33 | 期: | 19 | 起(迄)頁: | 2775-2787 | 來源出版物: | International Journal of Solids and Structures | 摘要: | A method for identifying the flexural rigidities of a non-uniform beam is developed in this paper. The finite element method is used to derive the equilibrium equation of the beam. The identification problem is then formulated as an optimization program in which the error norm of the equilibrium equation is minimized. The proposed method has the following features : (1) it uses longitudinal strains as the primary test data ; (2) the solution is unique and global minimal ; (3) the method can be applied to a whole beam as well as a part of a beam ; (4) the method is very stable. The identifiability of the inverse problem is studied in depth. Two numerical examples are presented to demonstrate the proposed method. Finally, a model test is performed to examine the effectiveness of the method in real applications. Copyright © 1996 Elsevier Science Ltd. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/119694 https://www.scopus.com/inward/record.uri?eid=2-s2.0-0030214220&doi=10.1016%2f0020-7683%2895%2900180-8&partnerID=40&md5=40c6bdb5447d3ddb49be80a714127af0 |
ISSN: | 00207683 | DOI: | 10.1016/0020-7683(95)00180-8 | SDG/關鍵字: | Error analysis; Finite element method; Identification (control systems); Inverse problems; Mechanical properties; Mechanical testing; Optimization; Strain; Equilibrium equation; Flexural rigidity; Model test; Non uniform beam; Static strain; Beams and girders |
顯示於: | 應用力學研究所 |
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