PSI - Issue 36

Yaroslav Shved et al. / Procedia Structural Integrity 36 (2022) 10–16 Yaroslav Shved; Yaroslav Kovalchuk; Liudmyla Bodrova; et al. / Structural Integrity Procedia 00 (2021) 000 – 000

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Combined dependence graphs for limiting loads on the elastic limit and at the transition to the limiting state, mass (material consumption) of the corresponding welded truss for different numbers of angle bars have been drawn. On the basis of the proposed technique and its computer realization, constructive parameters of welded rafter trusses with an optimum ratio of strength and material consumption are revealed. The research gives the opportunity to optimize the cost of a truss without losing the design strength of a welded structure. The described computer modeling experiment should be performed in the construction of welded rafter trusses to assess the behavior of trusses under static loads and to prevent the occurrence of the limit state in the construction of welded rafter trusses affected by known external forces in the existing structure References Ahrari, A., Atai A., 2013. Fully stressed design evolution strategy for shape and size optimization of truss structures. Computers & Structures 123. 58 - 67. Basara M., Kovalchuk Y., Shynhera N., 2017. Construction of welded truss nods using Ansys software complex. Scientific Journal of TNTU 82(2), 44–48. Blom, A., 1995. Spectrum fatigue behaviour of welded joints. Int. J. of Fatigue. 17(7). 485 - 491. Chornomaz, N., Kovalchuk, Y., Shynhera, N., 2019. Stress - strain state of a bottom chord of a welded roof truss. Scientific Journal of TNTU 93(1), 41–46. Dawe, J., Liu, Y., Li, J., 2010. Strength and behaviour of cold - formed steel offset trusses. Journal of Constructional Steel Research 66(4),556 - 565. Dubey, S., Sangamnerkar, P., Soni, P., 2012. Analysis of steel roof trusses under normal permeability condition. International Journal of Advanced Engineering Research and Studies 1(4), 8 - 12. Garg, V, Pathak, U., 2015. Optimization and rationalization of truss design. International Research Journal of Engineering and Technology 2(5), 624–636. Haichao, W., Hairong, F., Zhongtao, H., 2014. Study on present situation and prospect of fatigue strength and fatigue life of welded structures, Welding 7, 26 - 31. Hobbacher, A., 2016. Recommendations for fatigue design of welded joints and components IIW Collection, Springer International Publishing. Kachka, O., Kovalchuk, Y., Shynhera, N., 2015. Simulation of the welded roof truss behaviour under distributed loadings. Scientific Journal of TNTU 79(3), 89 - 95. Moddox, S., 2002. Hot - spot stress design curves for fatigue assessment of welded structures. International Journal of Offshore and Polar Engineering 12(2), 134 - 141. Müller, E, Klashorst, E., 2017. A quantitative comparison between size, shape, topology and simultaneous optimization for truss structures. Latin American Journal of Solids and Structures 14(12), 2221 - 2242. Reda, M., Sharaf, T., ElSabbagh, A., ElGhandour, M., 2019. Behavior and design for component and system of cold - formed steel roof trusses. Thin - Walled Structures 135, 21 - 32. Shynhera, N., 2012. Statistical model for determination of the residual resource. The thesis for obtaining a scientific degree of the candidate of technical sciences by speciality 01.05.02 – Mathematical modeling and computational methods. – Ternopil Ivan Puluj National Technical University. Shved, Y., Kovalchuk, Y., Shynhera, N., Voronchak, V., 2020. Fatigue damage of the heel joint of welded roof truss. Scientific Journal of TNTU 99(3), 28–33. Stolpe, M., Svanberg, K., 2003. A note on tress - based truss topology optimization. Struct Multidiscip. Optim. 25, 62–64. Topping, B., 1983. Shape optimization of skeletal structures: A review. Journal of Structural Engineering 109, 1933–1951. Wolfe, R., 1996. Structural performance of light - frame truss - roof assemblies, Proceedings of the International Engineering Conference, New Orleans, Louisiana State University 3, 263 - 268. Xiao, Z. - G., Yamada, K., 2004. A method of determining geometric stress for fatigue strength evaluation of steel welded joints, International Journal of Fatigue 26 (12), 1277 - 1293. Zhou, M., 1996. Difficulties in truss topology optimization with stress and local buckling constraints. Struct Optim 11(2), 134–136.