PSI- Issue 9

I. Shardakov et al. / Procedia Structural Integrity 9 (2018) 207–214 Author name / Structural Int grity Procedia 00 (2018) 00 –000

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Figure 2. Deformations 1  (μm / m) at point E1 (a) and 2  (μm / m) at point E2 (b) depending on time t (min). (red line - simulation, blue line - experiment)

Analysis of the results has indicated that compression, 1 0   , is realized at point E1 and tension, 1 0   , at point E2. It is interesting that the inelastic behavior of the elements in the compressed zone begins at higher loads compared to the stretched zone (at jack forces of 225kN and 190kN, respectively). At the same time, the value of the vertical displacement   U t at which the inelasticty zone starts corresponds to the jack force of ~ 150 kN. This fact can be attributed to the peculiarities of inelastic contact deformations in the bolted joint. 5. Conclusion A number of experimental and theoretical studies on the deformation behavior of metal bolted flange connections under quasistatic deformation have been carried out. The experimental measurements of the deformation parameters for the samples representing full-scale flange joints made it possible to verify the developed mathematical model describing deformation processes based on the elastic-plastic flow. The analysis of the numerical simulation results and the experimental measurements allowed us to determine deformation parameters that reflect the specific features of the stress-strain state in the vicinity of the bolted joint. The proposed parameters can be used in monitoring the structures with bolted flange connections. Acknowledgements The research was performed at the Institute of Continuous Media Mechanics Ural Branch of Russian Academy of Science, with the support of the Russian Science Foundation (project №14-29-00172). References Abidelah, A., Bouchair, A., Kerdal, D.E., 2012. Experimental and analytical behavior of bolted end-plate connections with or withour stiffeners. J Constr Steel Res, 76, 13–27. Blachowski, B., Gutkowski, W., 2016. Effect of damaged circular flange-bolted connections on behaviour of tall towers, modelled by multilevel substructuring. Engineering Structures, 111, 93-103. Ghindea, M., Ballok, R., 2015. State-of-the-art review on bolted steel beam-to-column connections. Bulletin of the Transilvania University of Braşov, 8 (57). Hunn, Z.D., et al., 2018. A Finite Element Study of Non-Orthogonal Bolted Flange Plate Connections for Seismic Applications. Key Engineering Materials, 763, 525-532. Li, B., Yang, Y., Chen, Y., Cheng, W., Zhang, L., 2018. Behavior of connections between square CFST columns and H-section steel beams. Journal of Constructional Steel Research, 145, 10-27. Li, X.C., He, X.N., Wang, H.X., Zhang, A.L., 2018. Compression-bend-shearing performance of column-to-column bolted-flange connections in prefabricated multi-high-rise steel structures. Engineering Structures, 160, 439-460.