C. Oktay AZELOĞLU, Ahmet Gökhan HASAN, Seyhan ÖZEN, Özgen Ümit ÇOLAK ÇAKIR, Ahmet SAĞIRLI

THEORETICAL AND EXPERIMENTAL DEFORMATION ANALYSIS OF CRANE BEAMS SUBJECTED TO MOVING LOAD

In this study, the dynamic behavior of crane beams subjected to moving load is inspected. Moving loads on their system cause significant dynamic effects. This problem called as the moving load problem affects a wide range of applications in engineering. One of the application areas is cranes. By increasing of worldwide production and consumption of goods, so much faster loading and transport is required. This fact has created a need increasing running speed of the cranes. Therefore, in the design of the crane, the dynamic effects arise from the moving loads should be known accurately. Therefore, in this study, the moving load problem is dealt with as part of the crane beams. The objective of study is to detect dynamic effects arise from the moving load and to contribute to the development of numerical approaches for solving this problem in the literature. For this purpose, theoretical and experimental study is performed in two sections. In the first section, the moving load problem in beams is solved by creating a theoretical model as part of the finite element method. In the second section, an experimental setup is created and the dynamic behavior of a crane beam subjected to moving loads is investigated experimentally. Then, comparing the theoretical model and the results obtained from experiments, the effectiveness of the developed theoretical models is discussed. The results of the study indicate that the numerical model developed for crane beams is usable and efficient.

Keywords:

Moving load problem, crane beams, finite element method, numerical model, experimental deformation analysis,

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[1] S.P. Timoshenko, History of Strength of Materials: With a Brief Account of the History of Theory of Elasticity and Theory of Structures, McGraw-Hill, New York, 1953.
[2] L. Fryba, Vibration of Solids and Structures under Moving Loads, Noordhoff, Groningen, 1972.
[3] M.M. Stanisicˇ´, On a new theory of the dynamic behaviour of the structures carrying moving masses, Ingenieur-Archiv 55 (1985) 176–185.
[4] S. Park, W.K. Chung, Y. Youm, J.W. Lee, Natural frequencies and open-loop responses of an elastic beam ﬁxed on a moving cart and carrying an intermediate lumped mass, Journal of Sound and Vibration 230 (2000) 591–615.
[5] D.C.D. Oguamanam, J.S. Hansen, G.R. Heppler, Dynamics of a three-dimensional overhead crane system, Journal of Sound and Vibration 242 (2001) 411–426.
[6] E.H.K. Fung, D.T.W. Yau, Vibration frequencies of a rotating ﬂexible arm carrying a moving mass, Journal of Sound and Vibration 241 (2001) 857–878.
[7] W. Yang, Z. Zhang, R. Shen, Modeling of system dynamics of a slewing ﬂexible beam with moving payload pendulum, Mechanics Research Communications 34 (2007) 260–266.
[8] J.J. Wu, A.R. Whittaker, M.P. Cartmell, Dynamic responses of structures to moving bodies using combined ﬁnite element and analytical methods, International Journal of Mechanical Sciences 43 (2001) 2555–2579.
[9] Wu, J.J., Whittaker, A.R., Cartmell, M.P. ( 2000). The use of finite element techniques for calculating the dynamic response of structures to moving loads. Computers and Structures, vol. 78, p. 789-799.
[10] Trethewey, Y.H., Trethewey, M.W. (1990). Finite element analysis of elastic beams subjected to moving dynamic loads. Journal of Sound and Vibration, vol. 136, no. 2, p. 323-342.
[11] Clough R.W., Penzien J. (1993). Dynamics of structures. New York: McGraw-Hill,. 1029 p. (In English). ISBN 978-0-415-62086-4.
[12] Wilson, E.L. (2002). Three-Dimensional Static and Dynamic Analysis of Structures, California: Computers and Structures Inc., 423p. (In English). ISBN 0-923907-00-9.
[13] Newmark, N.M. (1959). A Method of Computation for Structural Dynamics. ASCE Journal of the Engineering Mechanics Division, vol. 85 No. EM3.