Journal ArticleDOI
Arbitrary Lagrangian Eulerian formulation for soil structure interaction problems
Mhamed Souli,Isam Shahrour +1 more
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In this article, the mathematical and numerical implementation of the Arbitrary Eulerian Lagrangian (ALE) formulation and the contact algorithm are described, in order to validate the ALE algorithms, and prove its ability for civil engineering applications.About:
This article is published in Soil Dynamics and Earthquake Engineering.The article was published on 2012-04-01. It has received 21 citations till now. The article focuses on the topics: Soil structure interaction & Solid mechanics.read more
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Blast-induced damage and evaluation method of concrete gravity dam subjected to near-field underwater explosion
TL;DR: In this article, a three-dimensional fluid-solid coupling numerical model in LS-DYNA is proposed for simulating the shock wave propagation and its interaction with dam structures, in which the explosive, air, and water are meshed by an arbitrary Lagrangian-Eulerian (ALE) formulation, while the dam and its foundation are measured by the Lagrange formulation.
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FSI effects and seismic performance evaluation of water storage tank of AP1000 subjected to earthquake loading
TL;DR: In this article, a fluid-structure interaction algorithm of finite element technique is employed for the seismic analysis of water storage tank of AP1000, and the numerical results clearly show that the optimal h 2, h 2 / H w and m w / m t to structure are 8.8, 9.8 and 5.7235%, which can reduce the seismic response under earthquake loading most effectively.
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Investigation on sloshing and vibration mitigation of water storage tank of AP1000
TL;DR: In this paper, the influence of fluid-structure interaction (FSI) on the dynamic behavior of water tank and effects of water sloshing in reducing seismic response of the shield building was numerically investigated.
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Numerical simulation on coupled ship motions with nonlinear sloshing
Yu Du,Chenxu Wang,Nan Zhang +2 more
TL;DR: In this article, the external flow and sloshing are computed respectively with linear diffraction-radiation theory and the Arbitrary Lagrangian-Eulerian method, in which the structure flexibility of the tank wall could be included without additional computational effort.
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Air blast reflecting on a rigid cylinder: simulation and reduced scale experiments
TL;DR: In this article, the Multi-Material ALE formulation is applied to simulate the propagation of an air blast through the atmosphere, and its reflection on an assumed rigid cylindrical obstacle.
References
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Book
Nonlinear Finite Elements for Continua and Structures
TL;DR: In this paper, the authors present a list of boxes for Lagrangian and Eulerian Finite Elements in One Dimension (LDF) in one dimension, including Beams and Shells.
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Towards the ultimate conservative difference scheme. IV. A new approach to numerical convection
TL;DR: In this paper, an approach to numerical convection is presented that exclusively yields upstream-centered schemes, which start from a meshwise approximation of the initial-value distribution by simple basic functions, e.g., Legendre polynomials.
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Computational methods in Lagrangian and Eulerian hydrocodes
TL;DR: The basic explicit finite element and finite difference methods that are currently used to solve transient, large deformation problems in solid mechanics are reviewed.
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Euler–Lagrange coupling with damping effects: Application to slamming problems
TL;DR: In this paper, a new coupling algorithm is developed to estimate the local high pressure load on a rigid wedge impacting a free surface, where the fluid is represented by solving Navier-Stokes equations with an Eulerian or ALE formulation, and a damping force based on the relative velocity of the fluid and the structure is introduced to smooth out non-physical high frequency oscillations induced by the penalty springs.