PSI - Issue 2_A

Abdoullah Namdar et al. / Procedia Structural Integrity 2 (2016) 2796–2802 Author name / Structural Integrity Procedia 00 (2016) 000–000

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comparative study by FE model has been made. The figure 6 indicated that, the shear wall location and size in associate with displacement of floors. The first few modes are important for practical applications. This numerical analysis content of 15 modes. Mode 13 th has been used to understand displacement in top floor, and first mode is selected to consider load-displacement. The failure of the structure is judged based on the following two criteria: (1) possibility development of critical crack (2) exceeding the maximum displacement. If there is a through crack in structure body and the displacement in top floor the case is judged to be failed. 5. Conclusion Four models of concrete structure under seismic stability have been studied. In the model 4, the flexibility of whole structure was improved. In the model 2, due to higher forcing frequency fluctuation, the crack is expected on structure before failure, while in model 4 expected minimum crack before failure. The acceptable seismic stability design of model 4, results in improving architectural aesthetic of structural and enhancement light inside building. The shape of floor displacement at any model in specific mode are different. In same mode, with use of different shear wall, caused different shape of displacement in top floor of structure and flexibility as well. Vibration behaviour of models are mainly affected by the first few modes. The non- uniform excitation increases the cracking of the structural elements. References -57. 14, 49 Engineering Design Demir, A., Mermertas, V., 2008. Natural frequencies of annular plates with circumferential cracks by means of sector element. Engineering Fracture Mechanics 75, 1143-1155. Dimarogonas, A.D., 1996. Vibration of cracked structures: a state of the art review. Engineering Fracture Mechanics 55, 831–57. Housner, G.W., Thad Vreeland, Jr., 1991. The analysis of stress and deformation, 253. Kirmser, P.G., 1944. The effect of discontinuities on the natural frequencies of beams. Trans ASTM 44, 897-904. Li, J., Wu, C., Hao, H., 2015. An experimental and numerical study of reinforced ultra-high performance concrete slabs under blast loads. Materials & Design 82, 64-76. Namdar, N., Darvishi, E., Feng, X., Zakaria, I., Yahaya, F.M., 2016. Effect of flexural crack on plain concrete beam failure mechanism - A numerical simulation. Frattura ed Integrità Strutturale, 36, 168-181. Paolozzi, A., Peroni, I., 1990. Detection of debonding damage in a composite plate through natural frequency variations. Journal of Reinforced -89. 9, 369 Plastics and Composites Patil, D.P., Maiti. S.K., 2003. Detection of multiple cracks using frequency measurements. Engineering Fracture Mechanics 70, 1553-1572. Tran, V.X., Geniaut, S., Galenne, E., Nistor, I., 2013. A modal analysis for computation of stress intensity factors under dynamic loading conditions at low frequency using eXtended Finite Element Method. Engineering Fracture Mechanics 98, 122–136. Veletsos, A.S., Verbic, B., 1973. Vibration of viscoelastic foundations. & Structural Dynamics Earthquake Engineering 2, 87–102. Cawley, P.C., Adams, R.D., 1979. The location of defects in structures from measurements of natural frequencies. or train Analysis f Journal Of S