On the Development of a Novel Approach for Simulating Elastic Beams in Dualsphysics With the Use of the Project Chrono Library

Abstract

This work presents a novel numerical framework for dynamic analyses of structure systems within the meshless approach Smoothed Particle Hydrodynamics (SPH) method. The Lagrangian solver DualSPHysics presents several advantages over the widely used Eulerian solvers, dealing with nonlinearities and multiphase phenomena with reasonable numerical stability and reliability. The proposed procedure exploits the mechanical features provided by the Project Chrono library to simulate elastic beams. The modelling procedure is of interest for studying complex soil-, solid-, fluid-structure interactions, involving a system that includes all of the aforementioned phases in a unitary context. The analytical formulation to pass information over to the SPH solver for generating a sub-assembly of rigid stubs and elastic hinges, that will mimic the behavior of a Euler-Bernoulli flexible beam, is presented. The approach is validated against theoretical Euler-Bernoulli solutions: the agreement between the theoretical solutions for the behavior of the flexible beams and the presented model is very good and increases when the number of elements that make up the beam, N , increases. In addition, the behavior of the flexible beam thus created in the SPH environment is validated considering a sensitivity analysis based on several parameters, such as the model resolution (initial interparticle distance) and the number of elements. COMPDYN 2021 8 th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering M. Papadrakakis, M. Fragiadakis (eds.

Application of an SPH-DEM Coupled Model for Elastic Fluid–Structure Interaction

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Semi-Analytical Characterization of a Sloshing Fluid Mass With the Smoothed Particle Hydrodynamic Based Method

“…The SPH implementation in DualSPHysics [17] provides several tools and features that make the code ready for engineering applications, and very efficient when fluid phases are relevant [more in 18]. During the last few years, the code has seen an increase in availability of functionalities that are very apt for the simulation of Fluid-Structure Interaction in different engineering fields, ranging from renewable energy device [19,20,21] to hydroelasticity problems [22,23,24,25]. The code, moreover, proved its reliability for nearly any kind of free-surface flow interacting with rigid structures: dambreak-induced violent flows on downhill structures [26,27], coastal breakwaters [28,29] or floating objects [30,31,32].…”

Numerical Assessment of a Tension-Leg Platform Wind Turbine in Intermediate Water Using the Smoothed Particle Hydrodynamics Method

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