MODAL ANALYSIS OF CRACKED TOWER CRANE WITH AN EXPERIMENTAL VALIDATION

Nguyen Tien Khiem

Abstract


In this paper, dynamic stiffness model of a cracked frame structure that represents a planar tower crane is established in an explicit form based on general solution of cracked 2D-beam element vibration. The crack is modeled by a pair of equivalent springs of stiffness calculated from the crack depth. An explicit form of frequency equation is first established and then solved for numerical sensitivity analysis of natural frequencies of the structure to cracks. An experimental study is accomplished to validate the theoretical development

Keywords


Tower crane; cracked structure; modal analysis; dynamic stiffness method

Full Text:

PDF

References


Abdel-Rahman E.M., Nayfeh A.H. and Masoud, Z.N. - Dynamics and Control of Cranes. A Review. Journal of Vibration and Control, 9(7) (2003) 863-909.

Ju F. and Choo Y.S. - Dynamic characteristics of tower cranes. Proc. 2nd Int. Conf. on Structural Stability and Dynamics. World Scientific, Singapore (2002) 260-266.

Ju F. and Choo Y.S. - Dynamic Analysis of Tower Cranes. Journal of Engineering Mechanics 131 (1) (2005) 88-96.

Ju F., Choo Y.S. and Cui F.S. - Dynamic response of tower induced by the pendulum motion of the payload. International Journal of Solids and Structures 43 (2) (2006) 376-389.

Nasser M.A. - Dynamic Analysis of Cranes. Proc. IMAC XIX, paper No. 194301, pp. 1592-1599.

Oguamanam D.C.D. and Hansen J.S. - Dynamic response of an overhead crane system. Journal of Sound and Vibration 243 (5) (1998) 889-906.

Ghigliazza R.M. and Holmes P. - On the Dynamics of Cranes or Spherical Pendula with Moving Supports. Intern. J. of Nonlinear Mechanics 37 (6) (2002) 1211-1221.

Eden J.F., Homer P. and Butler A.J. - The Dynamic Stability of Mobile Cranes. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 199 (D4) (1985) 283-293.

Wang S., Shen R., Jin T. and Song S. - Dynamic Behavior Analysis and Its Application in Tower Crane Structure Damage Identification. Advanced Materials Research 368-373 (2012) 2478-2482.

Khiem N.T., Trong D.X. - Modal Analysis of Tower Crane with Cracks by the Dynamic Stiffness Method. Topics in Modal Analysis & Testing, Volume 10, Chapter 2, 2017, 11-22. M. Mains, J.R. Blough (eds.)

Khiem N.T., Tran T.H. - A procedure for multiple crack Identification in beam-like structures from natural vibration mode. Journal of Vibration and Control 20 (9) (2014) 1417-1427.

Nguyen Tien Khiem. Introduction to Experimental Mechanics, VNU Publishing House, Hanoi, 2012.




DOI: https://doi.org/10.15625/2525-2518/58/6/15298 Display counter: Abstract : 60 views. PDF : 37 views.

Refbacks

  • There are currently no refbacks.


budidaya tani

Index: Google Scholar; Crossref; VCGate; Asean Citation Index

Published by Vietnam Academy of Science and Technology