Review of the multibody dynamics in the applications of ships and offshore structures

Lee, Hyewon; Roh, Myung-Il

doi:10.1016/j.oceaneng.2018.08.022

Cited by 36 publications

(9 citation statements)

References 44 publications

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“…The following sections are going to present the modeling principles of multibody simulations as a foundation for the usage of that software in the creation of simulations with Vessel.js. A comprehensive study on multibody dynamics simulation can be consulted in [20], for example.…”

Section: Importing External Analysis Results To Vesseljsmentioning

confidence: 99%

An open-source library for hydrodynamic simulation of marine structures

Miquel

Fonseca

Gaspar

et al. 2020

Mar Syst Ocean Technol

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The work focuses on an open and collaborative approach for hydrodynamic simulations of multibody operations. It builds on Vessel.js, an existing web-based ship design library, by modeling the interaction between entities and creating multibody models able to output different responses. To develop the cases here studied, the simulations are decomposed into single elements to understand their behavior separately before making them interact with other elements to create a multibody simulation. In the process, different hydrodynamic models are used to analyze the bodies according to the requirements of the simulations and the needed level of complexity. The simulations are coded in JavaScript and visualized in a web environment, with the option of using external hydrodynamic analyzes, which in this work were exemplified using a commercial software that adopts the linear potential wave theory. The paper concludes with a discussion about future applications of methods and simulations.

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Section: Importing External Analysis Results To Vesseljsmentioning

confidence: 99%

An open-source library for hydrodynamic simulation of marine structures

Miquel

Fonseca

Gaspar

et al. 2020

Mar Syst Ocean Technol

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“…A total of 401 documents are encountered in this community, where hydrodynamic interaction, floatation and drift issues are of interest and are analyzed together with multibody models. There is a recent review of applications of MBS to ships and offshore structures by Lee and Roh [73]. comm-14 Powertrain elements.…”

Section: Detection Of Thematic Communitiesmentioning

confidence: 99%

Detection of Communities within the Multibody System Dynamics Network and Analysis of Their Relations

et al. 2019

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Multibody system dynamics is already a well developed branch of theoretical, computational and applied mechanics. Thousands of documents can be found in any of the well-known scientific databases. In this work it is demonstrated that multibody system dynamics is built of many thematic communities. Using the Elsevier’s abstract and citation database SCOPUS, a massive amount of data is collected and analyzed with the use of the open source visualization tool Gephi. The information is represented as a large set of nodes with connections to study their graphical distribution and explore geometry and symmetries. A randomized radial symmetry is found in the graphical representation of the collected information. Furthermore, the concept of modularity is used to demonstrate that community structures are present in the field of multibody system dynamics. In particular, twenty-four different thematic communities have been identified. The scientific production of each community is analyzed, which allows to predict its growing rate in the next years. The journals and conference proceedings mainly used by the authors belonging to the community as well as the cooperation between them by country are also analyzed.

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“…Constraint force equation (CFE) has been widely used for dynamic analysis of multibody mechanisms [5][6][7][8][9][10][11]. In CFE, the constraint forces and momentums are calculated using multibody dynamic equations, and then incorporated into the model as a separateexternal force on each part/component of a multibody mechanism.…”

Section: Introductionmentioning

confidence: 99%

A Nonlinear CFD/Multibody Incremental-Dynamic Model for A Constrained Mechanism

Rahmati

Karimi

2021

Applied Sciences

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Numerical analysis of a multibody mechanism moving in the air is a complicated problem in computational fluid dynamics (CFD). Analyzing the motion of a multibody mechanism in a commercial CFD software, i.e., ANSYS Fluent®, is a challenging issue. This is because the components of a mechanism have to be constrained next to each other during the movement in the air to have a reliable numerical aerodynamics simulation. However, such constraints cannot be numerically modeled in a commercial CFD software, and needs to be separately incorporated into models through the programming environment, such as user-defined functions (UDF). This study proposes a nonlinear-incremental dynamic CFD/multibody method to simulate constrained multibody mechanisms in the air using UDF of ANSYS Fluent®. To testify the accuracy of the proposed method, Newton–Euler dynamic equations for a two-link mechanism are solved using Matlab® ordinary differential equations (ODEs), and the numerical results for the constrained mechanisms are compared. The UDF results of ANSYS Fluent® shows good agreement with Matlab®, and can be applied to constrained multibody mechanisms moving in the air. The proposed UDF of ANSYS Fluent® calculates the aerodynamic forces of a flying multibody mechanism in the air for a low simulation cost than the constraint force equation (CFE) method. The results could have implications in designing and analyzing flying robots to help human rescue teams, and nonlinear dynamic analyses of the aerodynamic forces applying on a moving object in the air, such as airplanes, birds, flies, etc.

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Review of the multibody dynamics in the applications of ships and offshore structures

Cited by 36 publications

References 44 publications

An open-source library for hydrodynamic simulation of marine structures

An open-source library for hydrodynamic simulation of marine structures

Detection of Communities within the Multibody System Dynamics Network and Analysis of Their Relations

A Nonlinear CFD/Multibody Incremental-Dynamic Model for A Constrained Mechanism

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