Nonlinear Sloshing Analysis by Regularized Boundary Integral Method
Publication: Journal of Engineering Mechanics
Volume 143, Issue 8
Abstract
A new boundary integral method (BIM) is employed in this paper to study the two-dimensional (2D) and the three-dimensional (3D) nonlinear sloshing problems. Applying the subtracting and adding-back technique by regularized boundary integral method, the integrals of singularity and near-singularity in the boundary integral equation (BIE) can be removed and replaced appropriately by the alternative terms, respectively. In contrast to boundary element method (BEM), BIM is simpler and more straightforward. Therefore, BIM can not only provide an accurate prediction of the nonlinear free surface oscillation but also demonstrate the excellent efficiency of numerical calculation. Several small-scaled model tests on a shaking table, including harmonic and earthquake excitations, are carried out to verify the numerical methods. An artificial damping coefficient is introduced to simulate the energy dissipation of liquid motion. By comparison of the experimental and numerical results, BIM will be more reliable, efficient, and practical for nonlinear sloshing simulation.
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Acknowledgments
The authors sincerely appreciate the financial support sponsored by both the National Taiwan University and the National Science Council of the Republic of China.
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©2017 American Society of Civil Engineers.
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Received: Jun 30, 2016
Accepted: Dec 16, 2016
Published ahead of print: Mar 21, 2017
Published online: Mar 22, 2017
Published in print: Aug 1, 2017
Discussion open until: Aug 22, 2017
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