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Abdel-Basset Abdo, M. (2008). PARAMETRIC STUDY OF THE EFFECT OF DEAD LOADS ON BEAM NATURAL FREQUENCIES. JES. Journal of Engineering Sciences, 36(No 5), 1071-1083. doi: 10.21608/jesaun.2008.118711
Mohamed Abdel-Basset Abdo. "PARAMETRIC STUDY OF THE EFFECT OF DEAD LOADS ON BEAM NATURAL FREQUENCIES". JES. Journal of Engineering Sciences, 36, No 5, 2008, 1071-1083. doi: 10.21608/jesaun.2008.118711
Abdel-Basset Abdo, M. (2008). 'PARAMETRIC STUDY OF THE EFFECT OF DEAD LOADS ON BEAM NATURAL FREQUENCIES', JES. Journal of Engineering Sciences, 36(No 5), pp. 1071-1083. doi: 10.21608/jesaun.2008.118711
Abdel-Basset Abdo, M. PARAMETRIC STUDY OF THE EFFECT OF DEAD LOADS ON BEAM NATURAL FREQUENCIES. JES. Journal of Engineering Sciences, 2008; 36(No 5): 1071-1083. doi: 10.21608/jesaun.2008.118711

PARAMETRIC STUDY OF THE EFFECT OF DEAD LOADS ON BEAM NATURAL FREQUENCIES

Article 2, Volume 36, No 5, September and October 2008, Page 1071-1083  XML PDF (305.1 K)
Document Type: Research Paper
DOI: 10.21608/jesaun.2008.118711
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Author
Mohamed Abdel-Basset Abdo
Civil Engineering Department, Faculty of Engineering, Assiut University, Assiut, Egypt
Abstract
One of the hot research topics nowadays is structural health monitoring. The most useful damage location methods (based on dynamic testing) are probably those using changes in resonant frequencies. This study is concerned with parametric study of the effect of dead loads on the natural frequencies of beams. The study includes two types of dead loads; distributed and concentrated loads for different models. The first ten mode frequencies are studied for each model. Based on the numerical results, it is shown that both distributed and concentrated loads have considerable influence on the lower frequencies of beams, especially the fundamental one. Also, it is found that the influence of dead loads on beam frequencies depends on cross- section moment of inertia and span-length. Furthermore, it is found that the effect of dead loads decreases with the increase of number of beam spans. Also, certain cases of loadings provide high change of frequencies due to dead loads. On the other hand, the percentage changes of frequencies due to dead loads with different values of mass density and modulus of elasticity are the same.
Keywords
Parametric study; dead loads; beam natural frequencies; mass density; and modulus of elasticity
Main Subjects
Civil Engineering: structural, Geotechnical, reinforced concrete and steel structures, Surveying, Road and traffic engineering, water resources, Irrigation structures, Environmental and sanitary engineering, Hydraulic, Railway, construction Management.
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