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Journal articles on the topic 'Dynamic FEM analysis of ship structures'

Author: Grafiati

Published: 11 March 2023

Last updated: 31 July 2025

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1

Liang, Bing Nan, Hong Liang Yu, and Yu Chao Song. "Analysis of Damping Performance for Cabin Deck Covered with Floating Floor Coverings." Advanced Materials Research 610-613 (December 2012): 2566–70. http://dx.doi.org/10.4028/www.scientific.net/amr.610-613.2566.

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Floating floor coverings are widely applied in ship structures. With regard to the laminated composite shells made up of floating floor coverings and cabin deck and based on ANSYS system, a dynamics analysis on structures of three different kinds of floating floors is performed using FEM built upon laminated shell elements. The influence of rockwool board in terms of thickness, density and elastic modulus on structure dynamic characteristics is discussed. The performances of vibration control of three different floating floor structures are compared. The FEM performs well in analyzing and calc

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2

Domnisoru, Leonard, Ionica Rubanenco, and Mihaela Amoraritei. "Structural Safety Assessment of a 1100 TEU Container Ship, Based on a Enhanced Long Term Fatigue Analysis." Advanced Materials Research 1036 (October 2014): 935–40. http://dx.doi.org/10.4028/www.scientific.net/amr.1036.935.

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This paper is focused on an enhanced integrated method for structural safety assessment of maritime ships under extreme random wave loads. In this study is considered an 1100 TEU container test ship, with speed range 0 to 18 knots. The most comprehensive criteria for ships structural safety evaluation over the whole exploitation life is based on the long term ship structures analysis, that includes: stress hot-spots evaluation by 3D/1D-FEM hull models, computation of short term ship dynamic response induced by irregular waves, long term fatigue structure assessment. The analysis is enhanced by

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3

Singh, Janhavi, and Shilpa Pal. "Analysis of Blended Concrete Cubes under Impact loading using ANSYS." IOP Conference Series: Earth and Environmental Science 1084, no. 1 (2022): 012067. http://dx.doi.org/10.1088/1755-1315/1084/1/012067.

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Abstract Blended concretes, with the partial replacement of the cement with secondary cementitious material like fly ash, rice husk ash, GGBS (Ground Granulated Blast Slag), silica fume etc. are gaining a wide range of applications in civil engineering nowadays. The behaviour of concrete structures has been studied by many researchers under different types of loads like impact load, wind load, earthquake load etc. Impact loading analysis has applications like ship impact resistance design for marine structures, impact-resistant structural design against military and terrorist attacks etc. This

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4

Pratama, Albertus Calvin, and Aries Sulisetyono. "Reliability Analysis of Tugboat’s Nozzle Structure under Propeller Induced Flow Pressure and Wave Load in Operational Conditions." CFD Letters 17, no. 12 (2025): 185–207. https://doi.org/10.37934/cfdl.17.12.185207.

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Ship propellers produce thrust by transforming rotational energy from the primary engine into linear force. Ducted propellers are a widely employed propulsion device that enhances propeller efficiency through the application of the physical principles of ducts or nozzles. Research on the structural performance of nozzles is rare, despite the critical importance of preserving structural integrity during fluid-structure interaction. This paper examines the resilience of tugboat propeller fabrication under both static and dynamic fluid forces. Computational fluid dynamics (CFD) and the finite ele

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Park, Jeong Hee, and Duck Young Yoon. "A Proposal of Mode Polynomials for Efficient Use of Component Mode Synthesis and Methodology to Simplify the Calculation of the Connecting Beams." Journal of Marine Science and Engineering 9, no. 1 (2020): 20. http://dx.doi.org/10.3390/jmse9010020.

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Analytical method using Rayleigh–Ritz method has not been widely used recently due to intensive use of finite element analysis (FEA). However as long as suitable mode functions together with component mode synthesis (CMS) can be provided, Rayleigh–Ritz method is still useful for the vibration analysis of many local structures in a ship such as tanks and supports for an equipment. In this study, polynomials which combines a simple and a fixed support have been proposed for the satisfaction of boundary conditions at a junction. Higher order polynomials have been generated using those suggested b

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6

Norwood, M. N., and R. S. Dow. "Dynamic analysis of ship structures." Ships and Offshore Structures 8, no. 3-4 (2013): 270–88. http://dx.doi.org/10.1080/17445302.2012.755285.

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7

Rao, T. V. S. R. Appa, Nagesh R. Iyer, J. Rajasankar, and G. S. Palani. "Dynamic Response Analysis of Ship Hull Structures." Marine Technology and SNAME News 37, no. 03 (2000): 117–28. http://dx.doi.org/10.5957/mt1.2000.37.3.117.

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Finite-element modeling and use of appropriate analytical techniques play a significant role in producing a reliable and economic design for ship hull structures subjected to dynamic loading. The paper presents investigations carried out for the dynamic response analysis of ship hull structures using the finite-element method. A simple and efficient interactive graphical preprocessing technique based on the "keynode" concept and assembly-line procedure is used to develop the finite-element model of the hull structure. The technique makes use of the body plan of a ship hull to build the finite-

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Hoque, Kazi Naimul, and Md Shahidul Islam. "Stress-strain analysis of structural discontinuities associated with ship hulls." Journal of Naval Architecture and Marine Engineering 20, no. 1 (2023): 37–51. https://doi.org/10.3329/jname.v20i1.58298.

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The finite element method (FEM) is already well-established as a strong and widely used numerical analytical methodology for determining solutions to a wide variety of structural mechanics issues. One of the most significant subjects in the design of not only ships, but also airplanes and other structures is the configuration of plate type structures, particularly with discontinuities. A structural discontinuity occurs when the cross section of a structural part changes abruptly due to material defects or high stress locations. This article primarily focuses on the fundamental concepts of FEM

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9

Cheung, Kwok Fai, Ludwig H. Seidl, and Suqin Wang. "Analysis of SWATH Ship Structures." Marine Technology and SNAME News 35, no. 02 (1998): 85–97. http://dx.doi.org/10.5957/mt1.1998.35.2.85.

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Three methods of analysis of the primary structure of SWATH ships are examined. The quasistatic, rigid-dynamic and hydroelastic approaches are applied to analyze the structure of a detailed SWATH design. Deflections and stresses are calculated after each method and compared. The convergence of the hydroelastic approach with respect to the number of modes is also investigated. Although a relatively small ship is considered in this comparative study, hydroelastic effects are shown to be significant in areas of greater flexibility.

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10

Zhao, Yao, Wei Xin Zhou, Wei Bin Liu, Wen Yi, and Chang Gao. "Strength Calculation of Foam Core Sandwich Composite Ship by FEM." Materials Science Forum 813 (March 2015): 102–8. http://dx.doi.org/10.4028/www.scientific.net/msf.813.102.

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The foam core sandwich composite ship is a new kind ship using special materials. The advantages include easy molding, short construction period and so on. However, due to the specialty of the material property as well as the complexity of structures, there are element applicability and calculation efficiency problems when conducting FEA (Finite Element Analysis) calculations of the whole ship. Based on experiment and simulation result, a sandwich shell element is found which is equivalent to the solid element of beam and plate. An efficient and practical way is developed using this equivalent

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11

Sarkar, Rabby. "Structural Analysis of Ship Hulls Using Finite Element Methods." Innovative Journal of Applied Science 01, no. 01 (2024): 01–03. https://doi.org/10.70844/ijas.2024.1.4.

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Ship hull is a complex design where various types of complex loading conditions, like as Hydrostatic, Hydrodynamic, Wind, Wave and external internal bending forces. Ensuring structural integrity under these varying loads is essential for the ship structural safety and environmental protection. This review discusses the application of Finite Element Methods (FEM) for the safety of ship hulls and analysis of ship hulls, emphasizing two significant studies that leverage ANSYS SOFTWARE to evaluate stress concentrations and deformation of hull under the various loading operation including the wave

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12

Iatan, George Ciprian, Elisabeta Burlacu, and Leonard Dmnişoru. "Non-linear FEM analysis for ship panels under thermal loads." Analele Universităţii "Dunărea de Jos" din Galaţi. Fascicula XI, Construcţii navale/ Annals of "Dunărea de Jos" of Galati, Fascicle XI, Shipbuilding 43 (December 15, 2020): 95–102. http://dx.doi.org/10.35219/annugalshipbuilding.2020.43.12.

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During the past decade, welding remained the main technological procedure for joining steel components in shipbuilding industry. Though it has great benefits, welding is an aggressive process that introduces high stress and strains in the joined materials, causing distortion. Finite element method is an important instrument for predicting how structures are behaving under thermal loads. This paper is focused on studying the behaviour of small thickness ship panels, under straightening treatment, by performing thermal-structural-elastic-plastic analysis in Femap/NX Nastran. The proposed panel i

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13

Qiu, Liu Chao. "Dynamic Rupture Analysis of Concrete Structures by FEM-DEM Method." Advanced Materials Research 904 (March 2014): 241–45. http://dx.doi.org/10.4028/www.scientific.net/amr.904.241.

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A FEM-DEM approach was applied to investigate progressive rupture of concrete structures due to dynamic load including earthquakes. In the proposed method, the finite element method (FEM) designed for modelling stressed and deformed solids has been combined with the motion tracking capability of discrete element method (DEM). A fracture model combining single and smeared crack model is used in our simulation. The FEM-DEM method was used to simulate both the intact concrete behavior and the development of fractures in the indirect tensile test. The simulation results identify the failure mechan

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14

Li, Jie, Li Li Hu, Li Qin, Jun Liu, Rui Ping Tao, and Xi Ning Yu. "Dynamic Analysis of Piezoelectric Smart Structures." Advanced Materials Research 295-297 (July 2011): 1353–56. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.1353.

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In order to solve the active vibration control of piezoelectric smart structures, focus problems on the structural analysis of the dynamic characteristics. To piezoelectric smart structure for the research object, finite element modal analysis, solving the natural frequency and response characteristics. Firstly, analyzed the problems of structural eigenvalues and eigenvectors problems, then prepared dynamic response analysis program of FEM based on MATLAB, and complete the theoretical model calculations. At the same time, using ANSYS software to simulate and analyze, theresults show that, AN

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15

Hoque, Kazi Naimul, and Md Shahidul Islam. "Finite element approach to analyze structural discontinuities associated with ship hull." Journal of Naval Architecture and Marine Engineering 20, no. 3 (2023): 1–14. https://doi.org/10.3329/jname.v20i3.69756.

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The finite element method (FEM) is widely recognized as a powerful numerical analysis technique for approximating solutions in structural mechanics. Addressing the configuration of plate-type structures, particularly those with discontinuities, is crucial not only in ship and aircraft construction but also in various other fields. Structural discontinuities occur when there are sudden changes in the cross-section of structural members due to material imperfections or high-stress areas. This paper focuses on the fundamental principles of FEM for solving two-dimensional plane stress problems and

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16

P. Tamayo, Jorge L., Armando M. Awruch, and Inácio B. Morsch. "DYNAMIC ANALYSIS OF REINFORCED CONCRETE STRUCTURES." Revista Cientifica TECNIA 22, no. 1 (2017): 33. http://dx.doi.org/10.21754/tecnia.v22i1.88.

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ABSTRACTThe objective of this work is to provide a reliable numerical model using the finite element method (FEM) for the dynamic analysis of reinforced concrete (RC) structures. For this purpose, a computer program based on a strain-rate sensitive elasto-plastic theory is developed using 3D brick finite elements. The implicit Newmark scheme with predictor and corrector phases is used for time integration of the nonlinear system of equations. In addition, the steel reinforcement is considered to be smeared and perfectly adhered to concrete and represented by membrane finite elements. Two bench

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17

Estêvão, João M. C., and Ana S. Carreira. "USING THE NEW FIBRE CONTACT ELEMENT METHOD FOR DYNAMIC STRUCTURAL ANALYSIS." Engineering Structures and Technologies 7, no. 1 (2015): 24–38. http://dx.doi.org/10.3846/2029882x.2015.1087346.

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In literature, there are many methods proposed for structural analysis based on discrete element formulations, mainly for nonlinear problems. One of these new methods is the Fibre Contact Element Method (FCEM). Many of these methods have been used for structural dynamic analysis problems. However, there are some questions about their precision in capturing the dynamic elastic response of structures when comparing to methods based on continuous models, like the well known Finite Element Method (FEM). For this reason, the results obtained with FCEM were extensively compared with FEM results and

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18

Grządziela, Andrzej. "Ship Shock Modeling of Underwater Explosion." Solid State Phenomena 180 (November 2011): 288–96. http://dx.doi.org/10.4028/www.scientific.net/ssp.180.288.

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Ship shock tests have been conducted for shock qualification of hull integrity and proper operation systems and subsystems. The ship shock trial identifies design and construction and it also validates shock hardening criteria. The main problem is that ship shock trials are costly. Numerical modeling and simulation, using FEM, may provide information to look into the details of fluid model, dynamic characteristics of ship hull and its internal component. The ship shock modeling and simulation has been performed and the predicted results were compared with ship shock test data made into sea tri

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19

Grządziela, Andrzej, and Bogdan Szturomski. "Impact Modeling of Underwater Explosion." Solid State Phenomena 196 (February 2013): 51–61. http://dx.doi.org/10.4028/www.scientific.net/ssp.196.51.

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Ship shock tests have been conducted for shock qualification of hull integrity and proper operation systems and subsystems. The ship shock trial identifies design and construction and it also validates shock hardening criteria. The main problem is that ship shock trials are costly. Numerical modeling and simulation, using FEM, may provide information to look into the details of fluid model, dynamic characteristics of ship hull and its internal component. The ship shock modeling and simulation has been performed and the predicted results were compared with ship shock test data made into sea tri

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20

Vega Sáenz, Adán, Carlos Plazaola, Ilka Banfield, Sherif Rashed, and Hidekazu Murakawa. "Analysis and prediction of welding distortion in complex structures using elastic finite element method." Ciencia y tecnología de buques 6, no. 11 (2012): 35. http://dx.doi.org/10.25043/19098642.67.

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The Elastic Finite Element Method based on the inherent strain theory is used to predict the welding distortion of ship structures. In addition, a method to predict welding distortion of complex structures by using elastic FEM is presented. To evaluate the effectiveness of the proposed method, a typical case of a ship's structure is examined and the resulting welding distortion is compared to that obtained by using thermal elastic-plastic finite element method.

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21

Du, Wen Feng, Fu Dong Yu, and Zhi Yong Zhou. "Dynamic Stability Analysis of K8 Single-Layer Latticed Shell Structures Suffered from Earthquakes." Applied Mechanics and Materials 94-96 (September 2011): 52–56. http://dx.doi.org/10.4028/www.scientific.net/amm.94-96.52.

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Aiming at the dynamic stability of the K8 single-layer latticed shell structures, it was carried out the dynamic stability analysis based on the finite element method(FEM) in this paper. The dynamic responses of the structure are calculated using the FEM and the B-R rule is applied to determine the dynamic instability critical loads. Results show that the dynamic instability is prone to take place in the K8 single-layer latticed shell structures under the severe seismic load and the dynamic instability critical seismic wave peak value is about 0.7g. The location of instability starts from the

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22

Presura, Adrian, Ionel Chirica, and Elena Felicia Beznea. "Behavior Analysis of a Ship Structure Made out of Composite Materials." Advanced Materials Research 1143 (February 2017): 127–32. http://dx.doi.org/10.4028/www.scientific.net/amr.1143.127.

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. In this paper a parametric static and torsion analysis on a catamaran ship structure made out of composites materials is performed. The best solution for material selection is based on specific criteria for certain analysis. For dynamic analysis, the main criteria is to obtain the structure natural frequencies in a range, far from the resonance frequencies produced by the ship propulsion installation, wave loads etc. For static analysis the comparative criteria is to obtain the lowest weight of structure for the same strength. Also, buckling item is other criteria for comparative analysis. T

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23

Žmindák, Milan, Josef Soukup, Lenka Rychlíková, and Jan Skočilas. "Finite Element Transient Dynamic Analysis of Laminated Composite Plates." Applied Mechanics and Materials 732 (February 2015): 357–64. http://dx.doi.org/10.4028/www.scientific.net/amm.732.357.

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In recent years, the requirements on the plane and space structures have been growing. The essential aim is to minimize weight and increase the strength and carrying capacity of these structures. One of the possible solutions is application of the layered structure composed from the composite materials. These materials represent the most effective utilization of potential possibilities of mass and energy savings not only from material point of view, but also with respect to structure usage. The article presents the Finite element method (FEM) solution of the displacement, velocity and accelera

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Sviličić, Šimun, and Smiljko Rudan. "Modelling Manoeuvrability in the Context of Ship Collision Analysis Using Non-Linear FEM." Journal of Marine Science and Engineering 11, no. 3 (2023): 497. http://dx.doi.org/10.3390/jmse11030497.

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Ship collisions are rare events that may have a significant impact on the safety of people, ships, and other marine structures, as well as on the environment. Because of this, they are extensively studied but events that just precede collision are often overlooked. To rationally assess collision risks and consequences, a ship’s trajectory, and consequently the velocity and collision angle, should be known. One way to achieve this is through accurate modelling of ship manoeuvrability in collision analysis using non-linear FEM (NFEM). The Abkowitz manoeuvring model is implemented in the LS-Dyna

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Abramowicz, Małgorzata, and Agnieszka Pełka-Sawenko. "Comparison of the Finite Element Method and Rigid Finite Element Method During Dynamic Calculations of Steel–Concrete Composite Beams Based on Experimental Results." Materials 17, no. 24 (2024): 6081. https://doi.org/10.3390/ma17246081.

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Dynamic analysis of structures is a key challenge in structural engineering, especially in choosing effective and accurate numerical methods. Steel–concrete composite structures, commonly used in bridges and floors, require calculations of dynamic parameters to ensure safety and comfort. Few studies compare the effectiveness of the finite element method (FEM) and the rigid finite element method (RFEM) in the dynamic analysis of such structures. This study fills this gap by comparing the methods using experimental results. FEM and RFEM models were developed using Abaqus, Python, and Matlab. The

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Pruška, Jan. "EVALUATION OF UNDERGROUND STRUCTURES SUBJECTED TO SEISMIC LOADS." Acta Polytechnica CTU Proceedings 23 (July 30, 2019): 38–43. http://dx.doi.org/10.14311/app.2019.23.0038.

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The paper is focused on the evaluation of the effect of earthquakes on underground structures. Free-field analysis is one solution of this task common mainly in engineering tunnelling practice, but it has some rather simplified aspects (e.g. equivalent shear strain is constant). Pseudostatic finite element calculation combines free-field analysis and the advantages of a FEM model. Dynamic effects are introduced in the form of displacements prescribed along the vertical boundaries of the FEM model in a usually static manner. This approach also implies constant material parameters for the geolog

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Kruszka, Leopold, Yu S. Vorobiov, and N. Yu Ovcharova. "FEM Analysis of Cylindrical Structural Elements under Local Shock Loading." Applied Mechanics and Materials 566 (June 2014): 499–504. http://dx.doi.org/10.4028/www.scientific.net/amm.566.499.

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High rate deformations of structures cylindrical elements are considered 3D formulation. Elastic-plastic finite deformations and dynamic properties of material take into account. The problem become geometrically and physically nonlinear and finite element method is used. The numerical analyses of dynamics stress-strain state of real structures elements is executed.

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Çağlar, N. Merve, and Erdal Şafak. "Application of Spectral Element Method for Dynamic Analysis of Plane Frame Structures." Earthquake Spectra 35, no. 3 (2019): 1213–33. http://dx.doi.org/10.1193/050818eqs115m.

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The paper presents a methodology to analyze plane frame structures using the Spectral Element Method (SEM) with and without considering Soil-Structure Interaction (SSI). The formulation of spectral element matrices based on higher-order element theories and the assemblage procedure of arbitrarily oriented members are outlined. It is shown that SEM gives more accurate results with much smaller computational cost, especially at high frequencies. Since the formulation is in the frequency domain, the frequency-dependent foundation impedance functions and SSI effects can easily be incorporated in t

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29

Iegupov, Konstantin, Gennady Meltsov, Vyacheslav Iegupov, and Denys Bezushko. "Dynamic Calculation of the Pile Supported Wharf." ACADEMIC JOURNAL Series: Industrial Machine Building, Civil Engineering 2, no. 51 (2018): 37–44. http://dx.doi.org/10.26906/znp.2018.51.1289.

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The article deals with the issues of designing and operating marine pile supported wharf in the seismically hazard areas considering various superstructures and overload equipment influence. Analysis of hydraulic structures seismic resistance erected in seismic regions of Ukraine shows that the actual seismic load on buildings significantly exceeds the estimated loads that are determined by the normative documents before 2006. Design of hydraulic structures should be done considering berths of reloading complexes, with proper scientific support. Berth construction calculationsof the ship repai

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ANGHEL, Viorel, Stefan SOROHAN, and Daniel HODOR. "FEM Applications of Catenary Type Structures." INCAS BULLETIN 14, no. 4 (2022): 19–28. http://dx.doi.org/10.13111/2066-8201.2022.14.4.2.

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The paper deals with Finite Element Modeling of catenary type structures starting from practical problems related to a single cable segment in the case of an electric transmission line. Finite element models allow the analysis of the resulting deformed position and stress state for a given configuration obtained by using the geometric and physical data of a cable. Beam type linear/nonlinear finite element models which can take into account also the temperature variation and extra loading on the cable were developed. Another application of this type of models is for the case of form finding of

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31

Jia, Junbo, and Jonas W. Ringsberg. "Numerical and Experimental Investigation of Dynamics of Vehicle/Ship-Deck Interactions." Marine Technology and SNAME News 45, no. 01 (2008): 28–41. http://dx.doi.org/10.5957/mt1.2008.45.1.28.

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The paper presents numerical modeling and analysis of vehicle/ship-deck interactions and a review of similar models and approaches in the literature. The physical modeling of vehicles is discussed together with the modeling of supporting structures/ship decks, and the interactions between vehicles and supporting structures. Some engineering applications are studied, for example, the dynamic structural behavior of vehicle/ship-deck systems, vehicle vibrations, damping effects of vehicles on structural systems, dynamic interactions between tires and deck surfaces, and vehicle securing on decks d

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Kahsin, Maciej. "Numerical Modelling of Structures with Uncertainties." Polish Maritime Research 24, s1 (2017): 125–32. http://dx.doi.org/10.1515/pomr-2017-0030.

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Abstract The nature of environmental interactions, as well as large dimensions and complex structure of marine offshore objects, make designing, building and operation of these objects a great challenge. This is the reason why a vast majority of investment cases of this type include structural analysis, performed using scaled laboratory models and complemented by extended computer simulations. The present paper focuses on FEM modelling of the offshore wind turbine supporting structure. Then problem is studied using the modal analysis, sensitivity analysis, as well as the design of experiment (

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Yuan, Song Mei, Zhong Fei Zhan, and Yao Li. "Optimum Design of Machine Tool Structures Based on BP Neural Network and Genetic Algorithm." Advanced Materials Research 655-657 (January 2013): 1291–95. http://dx.doi.org/10.4028/www.scientific.net/amr.655-657.1291.

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In order to estimate and optimize the static and dynamic characteristics of machine tool, the full parameterized FEM model of it is established and studied in the paper. After the FEM analysis of bed, this paper takes a machine bed as example, presents a method of combination of BP Neural-Network(NN) and Genetic-Algorithm(GA) to optimize dynamic characteristics and realizes the structural optimization of the bed. It proved that this method takes less time, and more precision compared to traditional method.

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Shin, Yung S., Booki Kim, and Alexander J. Fyfe. "Stress Combination for Fatigue Analysis of Ship Structures." Journal of Offshore Mechanics and Arctic Engineering 127, no. 2 (2004): 175–81. http://dx.doi.org/10.1115/1.1924399.

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A methodology for calculating the correlation factors to combine the long-term dynamic stress components of ship structure from various loads in seas is presented. The proposed methodology is valid for a stationary ergodic narrow-banded Gaussian process. The total combined stress in short-term sea states is expressed by linear summation of the component stresses with the corresponding combination factors. This expression is proven to be mathematically exact when applied to a single random sea. The long-term total stress is similarly expressed by linear summation of component stresses with appr

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Zhang, Lei, Jin-Ting Wang, Yan-Jie Xu, Chun-Hui He, and Chu-Han Zhang. "A Procedure for 3D Seismic Simulation from Rupture to Structures by Coupling SEM and FEM." Bulletin of the Seismological Society of America 110, no. 3 (2020): 1134–48. http://dx.doi.org/10.1785/0120190289.

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ABSTRACT This article aims at numerically simulating the 3D seismic wave propagation from rupture to structures. A two-step method coupling the spectral element method (SEM) and the finite-element method (FEM) is proposed based on the domain reduction method to simultaneously simulate the seismic wave propagation in large-scale regions and analyze the dynamic behavior of structures in local sites. First, the concept of the proposed two-step method is illustrated. In the first step, the seismic wave propagation of the entire area, involving the source, propagation media, and local region of int

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Al-Helwani, Amjad, Mohamad Khir Abdul-wahed, and Mohanad Talal Alfach. "Dynamic behavior assessment of public buildings in Syria using non-linear time-history analysis and ambient noise measurements: a case study." Asian Journal of Civil Engineering 22, no. 4 (2021): 637–48. http://dx.doi.org/10.1007/s42107-020-00337-w.

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AbstractThis study evaluates the dynamic behavior and performance of vital reinforced concrete (RC) public building [Ministry of Higher Education (MHE)] designed in compliance with the old Syrian (non-seismic) building code. The real non-linear dynamic behavior of the MHE building has been checked by detailed dynamic numerical analyses (finite elements method—FEM) validated by a series of ambient noise measurements carried out on-site. The modeling approach for the thorough 3D dynamic analyses of the (RC) MHE building has been developed to be able to investigate the actual non-linear dynamic p

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Цуканова, Екатерина, and Ekaterina Tsukanova. "Analysis of forced vibrations of frameworks by finite element method using dynamic finite element." Bulletin of Bryansk state technical university 2015, no. 2 (2015): 93–103. http://dx.doi.org/10.12737/22911.

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The analysis of forced vibrations of frameworks using finite element method is considered. The dynamic finite element, the base functions of which represent exact dynamic shapes of structural elements, is used for system discretization. The assessment of errors as a result of classic FEM application is given. The efficiency of application of dynamic finite element for analysis of forced vibrations and dynamic stress-deformed state of structures is shown.

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Shao, Ren Ping, Xin Na Huang, Pu Rong Jia, Wan Lin Guo, and Kaoru Hirota. "Dynamic Analysis and Three-Dimensional Finite Element Simulation of Cracked Gear." Key Engineering Materials 353-358 (September 2007): 1072–77. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.1072.

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A method of damage detection and fault diagnosis for gears is presented based on the theory of elastomeric dynamics according to the theory of cracked beam. It takes an advantage of accurate fault diagnosis of gear body using the change of dynamic features and has some advantages for dynamic design of gear systems.The dynamics characteristics, i.e., natural frequency, vibration shape,dynamic response and so on, due to crack of gear tooth are studied, and the gear dynamics characteristics caused by the position and size of crack are deeply investigated by comparison with FEM. The theoretical an

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Yang, Jie, De-you Zhao, and Ming Hong. "An efficient method for non-stationary random vibration analysis of beams." Journal of Vibration and Control 17, no. 13 (2011): 2015–22. http://dx.doi.org/10.1177/1077546310395961.

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An efficient method is presented to investigate the non-stationary random vibration response of structures. This method has the advantage of the accuracy of theoretical method in dealing with random loads and the versatility of the finite element method (FEM) in dealing with structures. In this paper, the Euler beam is adopted in the derivation of the governing equation. The uncoupled approach of the frequency-dependent system matrices is presented for solving the motion equation of forced vibration. The time-variance random dynamic response of the beam is analyzed by the precise integral meth

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Liu, Qiang. "Research on Dynamic Characteristics and Response of Double-Tower Connected Structures." Applied Mechanics and Materials 578-579 (July 2014): 877–81. http://dx.doi.org/10.4028/www.scientific.net/amm.578-579.877.

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The dynamic analysis method and theory of double-tower connected structures is discussed in this paper .Then modal analysis、static and dynamic time-history analysis is researched with the FEM software ANSYS. Through the structure of monomer and comparative study of the structure in different locations, the basic rules of dynamic characteristics and the rules of layout corridor can be achieved. In addition, by symmetric and asymmetric conjoined comparative study, the basic choose rules of structure type can also be achieved.

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Chung, Nguyen Thai, Hoang Xuan Luong, and Nguyen Thi Thanh Xuan. "Dynamic stability analysis of laminated composite plates with piezoelectric layers." Vietnam Journal of Mechanics 36, no. 2 (2014): 95–107. http://dx.doi.org/10.15625/0866-7136/36/2/3467.

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Research on the stability to determine the critical value of structures is a complex issue but of real significance. Piezoelectric composite plate is one of the structures which have the ability to control the mechanical behaviors under loads. One of the prominent capabilities of this structure is the ability to control its vibration and stability. Using the finite element method (FEM) and construction calculation program in Matlab, the authors analyzed the elastic stability of piezoelectric composite plates under dynamic in-plane loads, taking into account damping properties of the structure.

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Chirica, Ionel, and Elena Felicia Beznea. "Structural Solutions for Ship Hull Plates Strengthening, under Blast Loads." Key Engineering Materials 601 (March 2014): 76–79. http://dx.doi.org/10.4028/www.scientific.net/kem.601.76.

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The paper presents selected results of a study concerning the protective capacity of ship hull plates, made out of layered composite plates. A scenario to evaluate the behaviour of the ship structure plate under blast loading is presented. The nonlinear analysis on a 3-D FEM model by using composite elements was performed. The methodology for the blast pressure charging and the mechanism of the blast wave in free air are given. The space pressure variation is determined by using Friedlander exponential decay equation. According to the methods used in this paper an individual pressure-time hist

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Akma, Jamiatul. "Direct Integration Mode Superposition: A Simple Method for Dynamic Analysis of Submerged Floating Tunnel (SFT)." Journal of Mechanical Engineering 22, no. 1 (2025): 118–36. https://doi.org/10.24191/jmeche.v22i1.4559.

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This article describes the use of simple methods to analyze the dynamic behavior of large-dimensional structures, such as submerged floating tunnels (SFT). Using this method the calculation process becomes simple and inexpensive because the solution can be obtained analytically. Based on the superposition mode method, it is possible to directly integrate the Euler-Bernoulli beam theory model, which is called the Direct Integration-Mode Superposition Method (DI-MSM). Using Hamilton's principle, the equation of motion in the EulerBernoulli Beam model is modified into the Equation of forced dampe

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Zhu, J.-Y. "Analysis of dynamic behaviour of low vibration track under wheel load drop by a finite element method algorithm." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 222, no. 2 (2008): 217–23. http://dx.doi.org/10.1243/09544097jrrt165.

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According to finite-element method (FEM) analytical solution (based on penalty algorithm) and the control equations of wheel—rail contact (developed from point-to-surface contact elements), the vibration responses were simulated for the two alternative railway track structures impacted by a falling wheel-set. The dynamic behaviour of low vibration track (LVT) is investigated based on this numerical method, which is verified by the field experiments. The results show that, when compared with the conventional short sleeper buried track (SSBT), the LVT is more beneficial for the reduction of trac

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Fang, Ren, Qin Zhaohong, Zhang Zhong, Liu Zhenhao, Yuan Kai, and Wei Long. "Modeling and dynamic environment analysis technology for spacecraft." International Journal of Computational Materials Science and Engineering 07, no. 01n02 (2018): 1850007. http://dx.doi.org/10.1142/s2047684118500070.

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Spacecraft sustains complex and severe vibrations and acoustic environments during flight. Predicting the resulting structures, including numerical predictions of fluctuating pressure, updating models and random vibration and acoustic analysis, plays an important role during the design, manufacture and ground testing of spacecraft. In this paper, Monotony Integrative Large Eddy Simulation (MILES) is introduced to predict the fluctuating pressure of the fairing. The exact flow structures of the fairing wall surface under different Mach numbers are obtained, then a spacecraft model is constructe

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Rudan, Smiljko, Stipe Tomašević, and Ivo Senjanović. "Fatigue Analysis of Structural Details of an Oceangoing LPG Ship." Key Engineering Materials 348-349 (September 2007): 573–76. http://dx.doi.org/10.4028/www.scientific.net/kem.348-349.573.

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Structural details of ship structures are prone to fatigue damage mainly due to high-cycle wave load and low-cycle cargo loading/unloading. Full stochastic fatigue analysis of selected structural details on an oceangoing 6500 cbm LPG ship is presented. A critical Y-joint of longitudinal bulkhead and bilobe tank shell as well as double-bottom girder details are selected due to different reasons. The eccentricity of the Y-joint, leads to significant stress concentration. Saddle supports of gas tanks cause stress concentration in ship double bottom due to weight and dynamic loads. Wave load on sh

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Orlowitz, Esben, and Anders Brandt. "Operational Modal Analysis for Dynamic Characterization of a Ro-Lo Ship." Journal of Ship Research 58, no. 04 (2014): 216–24. http://dx.doi.org/10.5957/jsr.2014.58.4.216.

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The dynamic characteristics of ship structures are becoming more important as the flexibility of modern ships increases, for example, to predict reliable design life. This requires an accurate dynamic model of the structure, which, because of complex vibration environment and complex boundary conditions, can only be validated by measurements. In the present paper the use of operational modal analysis (OMA) for dynamic characterization of a ship structure based on experimental data, from a full-scale measurement of a 210-m long Ro-Lo ship during sea trial, is presented. The measurements contain

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Zorzal, Caroline Belisário, Christianne de Lyra Nogueira, and Hernani Mota de Lima. "Blast-induced ground vibrations: a dynamic analysis by FEM." Research, Society and Development 11, no. 13 (2022): e205111335421. http://dx.doi.org/10.33448/rsd-v11i13.35421.

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The peak particle velocities (PPV) are fundamental for understanding and managing the levels of blast-induced ground vibrations and their effects on adjacent structures. Given that numerical analysis of seismic vibrations has been demonstrated to be a method that can significantly contribute to predicting PPV, this study adopts a numerical approach using the finite element method (FEM) to assess blasting-induced ground vibration in rock masses. A dynamic module of the stress-strain analysis based on the FEM displacement formulation is developed in ANLOG software to estimate the variations of d

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Günday, Furkan. "Structural Health Monitoring of Steel Garage Model with Stochastic Subspace Identification–Covariance Variance Analysis." Buildings 15, no. 6 (2025): 944. https://doi.org/10.3390/buildings15060944.

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Traditional methods of determining structural dynamic parameters produce destructive and unreliable results. Therefore, in this study, operational modal analysis method, which is a non-destructive and advanced method, was used to determine structural dynamic parameters. In this study, the dynamic parameters of the steel garage model were determined by the operational modal analysis (OMA), method and the current status of the structure was evaluated. The finite element model (FEM) of the steel garage was created with SAP2000 software, and then the experimental data were analyzed with Artemis Mo

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Topalska, Maria, and Lena Mihova. "FEM Parameters for Earthquake Analysis of Retaining Walls." IOP Conference Series: Materials Science and Engineering 1323, no. 1 (2024): 012015. https://doi.org/10.1088/1757-899x/1323/1/012015.

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Abstract The paper presents the main characteristics and features of numerical finite element (FE) models for the study of the seismic response of soil-retaining wall. Since walls are linear structures, 2D plane strain models are suitable for conducting of the analysis. The models need to include a finitely sized soil domain, whose boundary conditions are defined according to the way earthquake loading is defined, respectively as pseudo-static impact or dynamic impact as a function of time. The FE mesh must meet the criteria of sufficient density in order to ensure the necessary accuracy of th

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