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Experimental and numerical investigation of hyper-elastic submerged structures strengthened with cable under seismic excitations
European Journal of Environmental and Civil Engineering ( IF 2.1 ) Pub Date : 2020-10-23 , DOI: 10.1080/19648189.2020.1837253
A. Ersin Dinçer 1
Affiliation  

Abstract

This study presents dynamic responses of submerged highly elastic structures, strengthened with cable elements and the fluid interacting with the structure. For this purpose, fluid and structure are modelled with smoothed particle hydrodynamics and finite element methods, respectively. The interaction is satisfied with contact mechanics. In order to simulate the cable, a finite element model with a two-node cable element is used. The stiffness obtained from the cable is added to the structure and the whole fluid-structure system is solved together. The novel contribution of the present study is the coupling a two-node cable element model with the fluid-structure interaction method. In order to validate the numerical method, a set of novel experiments is carried out. In the experiments, cable elements are attached to an elastic structure that is placed in a water tank. Near-fault and earthquake excitations are applied to the tank and the displacement of the structure and the free surfaces of the water are recorded. All the results show that the proposed two-dimensional numerical model is capable of modelling the submerged elastic structure strengthened with the cable under the seismic excitations.



中文翻译:

地震激发下索加固超弹性水下结构的试验和数值研究

摘要

本研究展示了水下高弹性结构的动态响应,通过索元件和与结构相互作用的流体进行了加固。为此,流体和结构分别使用平滑粒子流体动力学和有限元方法进行建模。交互满足接触力学。为了模拟电缆,使用了具有两节点电缆单元的有限元模型。从电缆获得的刚度被添加到结构中,整个流固耦合系统一起求解。本研究的新贡献是将双节点索单元模型与流固耦合方法耦合。为了验证数值方法,进行了一组新颖的实验。在实验中,电缆元件连接到放置在水箱中的弹性结构上。对储罐施加近断层和地震激励,并记录结构的位移和水的自由表面。所有结果表明,所提出的二维数值模型能够模拟在地震激发下用索加固的水下弹性结构。

更新日期:2020-10-23
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