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EFFECT OF CRACK DEPTH ON THE NATURAL FREQUENCY OF A PRESTRESSED FIXED–FIXED BEAM

✍ Scribed by S. Masoud; M.A. Jarrah; M. Al-Maamory

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
231 KB
Volume
214
Category
Article
ISSN
0022-460X

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✦ Synopsis

The effect of crack depth on the transverse vibrational characteristics of a prestressed fixed-fixed beam is investigated. The natural frequency of the system is obtained by modal analysis. The coupling effect between the crack depth and the axial load on the natural frequency of the system is investigated. Also, experimental work verifies the results of the theoretical analysis. The study shows that there is a significant coupling between the axial load and the crack depth, and this coupling effect is directly proportional to the crack depth as well as the axial load. Therefore, the problem of a prestressed cracked beam cannot be treated as a superposition of two separate effects (crack plus axial load) to find the natural frequency of the system.

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