Abstract
In this paper, the moving element method (MEM) is extended to cooperate with the boundary element method (BEM), namely, the BEM-MEM. This method is applied to compute hydroelastic responses of a pontoon type very large floating structure (VLFS) under wave action and also subjected to a moving load. By using this method, the structure is discretized into “moving elements” which are conceptual elements and “flow” with the moving load. Thus, the proposed method eliminates the need for keeping track of the location of the moving load with respect to the floating structure. The surrounding fluid is defined based on the potential flow theory and the motion of the floating plate is governed by the vibration equation of a thin plate. The governing equations of motion, as well as structural matrices of moving element and fluid matrices of boundary element are formulated in a relative coordinate system traveling at a constant speed. The numerical results conducted by using the BEM-MEM are compared with the results obtained by alternative approaches. The paper also discusses the effect of water depth on responses of the floating structure including displacements and drag force.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Ang KK, Dai J (2013) Response analysis of high-speed rail system accounting for abrupt change of foundation stiffness. J Sound Vibration Elsevier 332(12):2954–2970. https://doi.org/10.1016/j.jsv.2013.01.005
Cao TNT et al (2017) Dynamic analysis of three-dimensional high-speed train-track model using moving element method. Adv Structural Eng p. 136943321773376. https://doi.org/10.1177/1369433217733763
Jin JZ, Xing JT (2007) Transient dynamic analysis of a floating beam-water interaction system excited by the impact of a landing beam. J Sound Vib 303(1–2):371–390. https://doi.org/10.1016/j.jsv.2007.01.026
Koh CG et al (2003) Moving element method for train-track dynamics. Int J Numer Meth Eng 56(11):1549–1567. https://doi.org/10.1002/nme.624
Nevel DE (1970) Moving loads on a floating ice sheet. Cold Reg Res Eng Laboratory
Nguyen VH, Duhamel D (2008) Finite element procedures for nonlinear structures in moving coordinates. Part II: infinite beam under moving harmonic loads. Comput Struct 86(21–22):2056–2063. https://doi.org/10.1016/j.compstruc.2008.04.010
Szilard R (2004) Theories and aplications of plate analysis: classical, numerical and engineering methods. Wiley, Hoboken, New Jersey
Than CTN et al (2017) A moving element method for the dynamic analysis of composite plate resting on a Pasternak foundation. In: ACOME2017. Phu Quoc, Vietnam, pp 2–4
Wang CD, Wang CM (2008) Computation of the stress resultants of a floating Mindlin plate in response to linear wave forces. J Fluids Struct 24(7):1042–1057. https://doi.org/10.1016/j.jfluidstructs.2008.01.006
Watanabe E, Utsunomiya T, Wang CM (2004) Hydroelastic analysis of pontoon-type VLFS: a literature survey. Eng Struct 26(2):245–256. https://doi.org/10.1016/j.engstruct.2003.10.001
Yeung RW, Kim JW (2001) Effects of a translating load on a floating plate structural drag and plate deformation. J Fluids Struct 16(15):399–413. https://doi.org/10.1006/jfls.2000.0307
Acknowledgements
This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number 107.02-2018.14.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Vu Nguyen, X., Luong, V.H., Cao, T.N.T., Tran, M.T. (2020). A Moving Element Method for Hydroelastic Response of a Floating Thin Plate Due to a Moving Load. In: Wang, C., Ho, J., Kitipornchai, S. (eds) ACMSM25. Lecture Notes in Civil Engineering, vol 37. Springer, Singapore. https://doi.org/10.1007/978-981-13-7603-0_20
Download citation
DOI: https://doi.org/10.1007/978-981-13-7603-0_20
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-13-7602-3
Online ISBN: 978-981-13-7603-0
eBook Packages: EngineeringEngineering (R0)