Abstract
Damage of a structure affects its stiffness properties and induces a shift in the free frequency spectrum. In the paper, an additional parameter is introduced, such as concentrated elastic or rigid support and mass. The evolution of natural frequencies is analyzed for varying parameter values with respect to damage location. This frequency variation is used in assessing the location and magnitude of damage by introducing the damage indices or by solving the identification problem requiring the minimization of the parameter dependent distance functional. The first part of the paper is concerned with the sensitivity analysis of damage indices with respect to support or mass location. The second part deals with the identification problem for which the specific examples are treated.
Subject
Computational Theory and Mathematics,Computer Science Applications,General Engineering,Software
Reference24 articles.
1. Bicanic, N. and Chen, H.P. (1997), “Damage identification in framed structures using natural frequencies”, Int. J. Num. Meth. Eng., Vol. 40, pp. 4451‐68.
2. Burczyn´ski, T. and Polch, E.Z. (1994), “Path independent and boundary integral approach to sensitivity analysis and identification of cracks”, in Bui et al. (Eds), Inverse Problems in Eng. Medh, A.A. Balkema, Lisse, pp. 355‐61.
3. Cawley, P. and Adams, R.D. (1979), “The location of defects in structure from measurements of natural frequencies”, J. Strain Anal., Vol. 14, pp. 49‐57.
4. Dems, K. and Mróz, Z. (1986), “On a class of conservation rules associated with sensitivity analysis in linear elasticity”, Int. J. Solids Struct., Vol. 22, pp. 137‐58.
5. Dems, K. and Mróz, Z. (1989), “Sensitivity of buckling load and vibration frequency with respect to shape of stiffened and unstiffened plates”, Mech. Struct. Machines, Vol. 17, pp. 431‐57.
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