Structural response of a floating runway excited by the taking off of an airplane

  • Nitin Agarwala Department of Ship Technology, Cochin University of Science and Technology, Kochi
  • E M Somashekharan Nair Mechanical Engineering Department, SCMS School of Engineering and Technology, Palissery, Karukutty, Kochi
Keywords: Moving load, Timoshenko-Mindlin beam, Floating runway, Structural response


When designing a floating airport we need to address the structural response both by ocean waves and dynamic loads such as the landing / take off of an airplane. Since such problems are not conducive to physical modeling and experimental validation due to their size and speeds involved, numerical analysis is an accepted norm. However conventional means to study structural responses using a three dimensional runway with time varying dynamic loads is numerically difficult and time consuming. The analysis is made simpler by assuming the airport to be a simple, infinitely long beam, given by a one dimensional Timoshenko-Mindlin plate equation, in contact with the water surface. In developing this expression, a Fourier transformation in space in wave number domain is utilized rather than using the wave propagation method to reduce the analysis to a substructure. On analyzing, the structural response is seen as local peaks emanating from the point of load application which moves in a curvilinear path with increasing speed of the airplane. The location of these peaks a priori is however not feasible.



Download data is not yet available.


Watanabe E; and Utsunomiya T: (1996) Transient response analysis of a VLFS airplane landing. Proceedings of the International workshop on very large floating structures. Hayama, Japan, p. 243-247.

Kim J W; and Webster W C: (1998) The drag of an airplane taking off from a floating runway. Journal of Marine science and Technology, 3: p. 76-81.

Ohmatsu S: (1998) Numerical calculation of hydroelastic behaviour of VLFS in time domain. Proceedings of the International Conference on hydroelasticity in marine technology. Fukuoka, Japan, p. 8998.

Endo H; and Yago K: (1998) Time history response of a large floating structure subjected to dynamic load. Journal of the Society of Naval Architects of Japan, 186: p. 369-376.

Endo H: (2000) The behaviour of a VLFS and an airplane during takeoff/landing run in wave condition. Marine Structures, 13(4-5): p. 477-491.

Yeung R W; and Kim J W: (2000) Effect of translating load on a floating plate-structural drag and plate deformation. Journal of Fluids and Structures, 14: p. 993-1011.

Lee D H; and Choi H S: (2003) Transient hydroelastic response of very large floating structures by FE-BE Hybrid Method. Proceedings of the International Offshore and Polar Engineering Conference, p. 100-105.

Kashiwagi M: (2004) Transient responses of a VLFS during landing and take-off of an airplane. Journal of Marine Science and Technology, 9(1): p. 14-23.

Fleischer D; and Park S K. (2004). Plane hydroelastic beam vibrations due to uniformly moving one axle vehicle. Journal of Sound and Vibration, 3: 585-606

Kyoung J H; Hong S Y; and Kim B W: (2006) FEM for time domain analysis of hydroelastic response of VLFS with fully nonlinear free-surface conditions. International Journal of Offshore and Polar Engineering, 16(3): p. 168-174.

Jin J Z; and Xing J T: The transient dynamic analysis of a floating beam-water interaction system excited by the impact of a landing beam. Journal of Sound and Vibration, 2: (2007), p. 371-390.

Qiu Liu-chao; and Liu Hua: (2007) Three-dimensional time-domain analysis of very large floating structures subjected to unsteady external loading. Journal of Offshore Mechanics and Arctic Engineering, ASME, 129: p. 21-28.

Qiu Liu-chao: (2007) Numerical simulation of transient hydroelastic response of a floating beam induced by landing loads. Applied Ocean Research, 29: p. 91-98.

Cray, Benjamin A: (1994) Acoustic radiation from periodic and sectionally aperiodic rib-stiffened plates. Journal of Acoustical Society of America, 95(1), p. 256-164.

Cheng C. C. and Chui C. M., (1999) Sound radiation from periodically spring-supported beams under the action of a convected uniform harmonic loading, J. Sound Vib. 226, 83-99.

Cheng C. C. Kuo C. P. and Yang J. W., (2000) Wavenumber-Harmonic Analysis of a Periodically Supported Beam under the Action of a Convected Loading, ASME J. Vib. and Acoustics, 122(3), 272-280.

Cheng C. C., Kuo C. P. and Yang J. W., (2001) A Note on the Vibro-Acoustic Response of a Periodically Supported Beam Subjected to a Convected Loading, J. Sound Vib. 239(3), 531-544.

Junger M. C. and Feit D: (1986) Sound Structures and Their Interaction, 2nd Ed., MIT Press, Cambridge, MA.

How to Cite
Agarwala, N., & Nair, E. M. S. (2014). Structural response of a floating runway excited by the taking off of an airplane. Journal of Naval Architecture and Marine Engineering, 11(2), 131-138.