Finite element modeling of rectangular storage tanks considering fluid-structure interaction
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کد مقاله : 4353-IRAST (R1)
نویسندگان
1مازندران - بهشهر - کیلومتر ۳ جاده دریا- دانشگاه علم و فناوری مازندران
2دانشگاه آزاد اسلامی واحد علوم و تحقیقات
چکیده
In this study, dynamic response of a rectangular storage tank under earthquake excitation is investigated. A finite element model of tank is developed, to perform dynamic analysis. Modelling a storage tank has many complexities such as property extraction of restricted fluid in a storage tank and fluid-structure interaction. The material of fluid medium is modeled as linear elastic, whereas the interface of the fluid-tank interface is modeled by concentrated nonlinear element. In addition, the tank is modeled using plane strain element and the fluid-structure interaction is considered by modeling water as displacement-based Lagrangian approximation. The finite element model is validated utilizing a previous experimental study. The results comparison are made in different analysis aspect, such as static, dynamic and seismic analysis. Comparing the results of the experiment and finite element model, shows good agreement. Finally, some responses of the model such as liquid sloshing, hydrodynamic pressure on the tank walls and roof response are discussed and the results are compared.
کلیدواژه ها
موضوعات
Title
Finite element modeling of rectangular storage tanks considering fluid-structure interaction
Authors
Fariba Behshahr, Amirhossein Najafi
Abstract
In this study, dynamic response of a rectangular storage tank under earthquake excitation is investigated. A finite element model of tank is developed, to perform dynamic analysis. Modelling a storage tank has many complexities such as property extraction of restricted fluid in a storage tank and fluid-structure interaction. The material of fluid medium is modeled as linear elastic, whereas the interface of the fluid-tank interface is modeled by concentrated nonlinear element. In addition, the tank is modeled using plane strain element and the fluid-structure interaction is considered by modeling water as displacement-based Lagrangian approximation. The finite element model is validated utilizing a previous experimental study. The results comparison are made in different analysis aspect, such as static, dynamic and seismic analysis. Comparing the results of the experiment and finite element model, shows good agreement. Finally, some responses of the model such as liquid sloshing, hydrodynamic pressure on the tank walls and roof response are discussed and the results are compared.
Keywords
Liquid Storage tanks, Fluid-Structure interaction, Finite Element model, Fast Nonlinear Analysis