A simple method to identify multiple cracks in a beam is presented. The cracks are modeled as rotational springs and the forward problem is solved using the finite element method. The inverse problem is solved iteratively for the locations and sizes of the cracks using the NewtonβRaphson method. Num
Identification of multiple cracks in a beam using vibration amplitudes
β Scribed by Jinhee Lee
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 206 KB
- Volume
- 326
- Category
- Article
- ISSN
- 0022-460X
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
An energy-based numerical model is developed to investigate the in#uence of cracks on structural dynamic characteristics during the vibration of a beam with open crack(s). Upon the determination of strain energy in the cracked beam, the equivalent bending sti!ness over the beam length is computed. T
This paper concerns the real-time estimation of wave amplitudes and their subsequent use as a cost function in adaptive active control of bending vibrations in a beam. The amplitude of the wave propagating downstream from the control location is estimated by "ltering the outputs of an array of senso
The dynamics of a cracked, simply supported uniform beam is treated for either bending or axial vibrations. The crack is simulated by an equivalent spring, connecting the two segments of the beam. Analysis of this approximate model results in algebraic equations which relate the natural frequencies
It is known that the e!ect of a single crack in an axially vibrating thin rod is to cause the nodes of the mode shapes move toward the crack. This paper is an analytical/experimental investigation of the analogous problem for a thin beam in bending vibration. The monotonicity property linking change