MULTIPLE CRACK IDENTIFICATION IN STEPPED BEAM BY MEASUREMENTS OF NATURAL FREQUENCIES
نویسندگان
چکیده
منابع مشابه
A numerical investigation into the crack effects on the natural frequencies of the plates
In the current study, the effect of such parameters as the length, position and angle of crack on free vibrations of a cracked plate was examined by finite element method. The assumed crack was internal and through and its growth was ignored. In the proposed finite element model, crack was considered as a discontinuity on the plate surface and the results were compared with the results of other...
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This paper presents a method to detect multiple cracks based on frequency information. When a structure is subjected to dynamic or static loads, cracks may develop and the modal frequencies of the cracked structure may change. To detect cracks in a structure, we construct a high precision wavelet finite element (EF) model of a certain structure using the B-spline wavelet on the interval (BSWI)....
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the problem of crack identification in continuous beam like structures is considered. the cracks’ locations and their depths are identified by employing experimental modal test results performed on the structure. the cracks are modeled using generic elements to include the coupling effects between shear forces and bending moments at the crack section. in the identification procedure eigen- sens...
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ژورنال
عنوان ژورنال: Vietnam Journal of Mechanics
سال: 2014
ISSN: 0866-7136,0866-7136
DOI: 10.15625/vjmech.v36i2.3141