It is based on deriving governing differential equations in terms of energy density variables and employing a finite element approach for solving them numerically. In contrast, EFEA offers an improved alternative formulation to the SEA for simulating the structural-acoustic behavior of built-up structures. It can be easily applied to irregular domains and geometries that are composed of different materials or mixed boundary conditions.Īlthough SEA models result in a few of equations which are easy to solve, they cannot be developed from CAD data, local damping cannot be accounted for, and the model development requires specialized knowledge. Due to the utilization of the finite element technique, EFEA also has the other advantages that traditional FEM does not have. The postprocessing of EFEA results also provides straight-forward visualization of the energy flow in a system, which is convenient for diagnoses and control of noise propagation.ĮFEA can be applied to model highly damped or nonuniformly damped materials, and to model distributed masses as well as multipoint power input. The prediction of a spatially varying energy level within a structural subsystem is available with the EFEA computation. This permits modeling flexibility and cost-saving as one FE model can be applied to both low and high frequency analysis.
The EFEA is compatible with low frequency FEM models since it can use an FEM database. The primary variable in EFEA is defined as the time averaged energy density over a period and space averaged energy density over a wavelength. The EFEA applies finite element discretization to solve the governing differential energy equations. Pantazopoulou, Konstantinos Tsiotsiasm, and Katerina D.Laith Egab, in Automotive Tire Noise and Vibrations, 2020 10.2.2.2 Energy finite element analysisĮFEA is a finite element-based computational method for high frequency vibration and acoustic analysis. Opportunities for synthetic fibre reinforcement in concrete tramlinesįREE ONLINE EDUCATION PRESENTATIONS ON Finite Element Analysis (VIDEOS) Evaluation of the Orientation of Concrete Finishing Machines in Skewed Bridges Using Finite Elementsīy Brandon Gillis, Faress Hraib, Li Hui, and Riyadh Hindi Microstructure-Guided Numerical Simulation to Evaluate the Influence of Phase Change Materials (PCMs) on the Thermal Response of Concrete Pavementsīy Sumeru Nayak Monitoring and Assessment of a Prestressed Concrete Segmental Box-Girder Bridgeīy Jean-François Laflamme and Marc Savard Reinforcement Anchorage and Bond – Slip Laws for UHPC Structuresīy Stavroula J. Neglecting Compatibility Torsions In The Design Of Concrete Structures Hard and Soft Projectile Impact Simulation of Prestressed Concrete PanelsĮffect of CFRP Strengthening on the Behavior of Older and Newer Bent Caps in a Widened Concrete Bridge
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