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Showing 1 to 20 of 28 for “"Finite element (FE) Analysis"”.
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A numerical study of Witsenhausen's Counterexample
… of the Stage I controller in the system. Using finite element (FE) analysis, we develop a numerical framework to study this integral equation and understand the structure of optimal controllers. We then solve the integral equation as a mathematical optimization and use our FE model to …
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Finite Element Analysis Of A Test Specimen For Strength Of A Co-polymer Layer At A Bone-implant Interface
… implants to improve their performance and life. Finite element (FE) analysis techniques are used to assess the behavior of the interface layer under static and dynamic loading conditions. The material property of the co-polymer is a function of its composition and water saturation. The …
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Probabilistic Seismic Assessment of Structure, Foundation, and Soil Interacting Systems
… and without soil-structure interaction. Four different approaches of Soil-Structure Interaction (SSI) are tried: (a) Abutments and foundations are assumed to be fixed, (b) Conventional lumped spring approaches are adopted to model abutments and foundations, (c) Lumped springs for abutments and …
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Analytical behaviour of FRP strengthened reinforced concrete beams under low velocity impact load incorporating rate dependant material constitutive models
… are amongst some of the advantages offered by externally bonded FRP systems over traditional strengthening methods. In addition to strengthening for static loading, there are many scenarios where strengthening is required to elements subjected to dynamic loads. The static behaviour of …
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Evaluation of Analysis Methods used for the Assessment of I-walls Stability
… System (HPS) of the area. The system suffered 46 breaches due to water levels overtopping and another four caused by instability due to soil foundation failure. The Interagency Performance Evaluation Task Force (IPET) conducted a study to analyze what happened on the I-wall breach of the …
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Assessing the feasibility of yttria-stabilized zirconia in novel designs as mandibular anterior fixed lingual retention following orthodontic treatment.
The purpose of this study is to explore the feasibility of yttria-stabilized zirconia (Y-TZP) in fixed lingual retention as an alternative to stainless steel. Exploratory Y-TZP specimens were milled to establish design parameters. Next, specimens were milled according to ASTM standard C1161-13 and …
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Effect of Poisson’s Ratio on Material Properties Characterization by Nanoindentation with a Cylindrical Flat Tip Indenter
… to determine the mechanical properties of different kinds of engineering materials. The young’s modulus of the materials can be calculated with the load depth data obtained from an indentation test with a known Poisson’s ratio. In this investigation the NANOVEA micro/nanoindentation tester …
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Contributions to automatic meshing in the AMORE scheme
Traditional Finite Element (FE) analysis requires the discretisation of continuous bodies into connected meshes of triangles and quadrilaterals (in 2D; tetrahedrals [tet] and hexahedrals [hex] in 3D) elements. Besides the restrictions due to compatibility of adjacent elements, one primary concern …
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Development, Calibration, and Validation of a Finite Element Model of the THOR Crash Test Dummy for Aerospace and Spaceflight Crash Safety Analysis
Anthropometric test devices (ATDs), commonly referred to as crash test dummies, are tools used to conduct aerospace and spaceflight safety evaluations. Finite element (FE) analysis provides an effective complement to these evaluations. In this work a FE model of the Test Device for Human Occupant …
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MECHANICAL CHARACTERIZATION OF PORCINE AORTA USING MAGNETIC RESONANCE IMAGING
… couples Magnetic Resonance Imaging (MRI) with Finite Element (FE) analysis to define a model of aortic mechanical behaviour. In particular, the aortic fibrous structure was analysed using Diffusion Tensor MRI, the results of which showed that fibres could be tracked in the aortic tissue, and …
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Dynamics of circular cylindrical shells in contact with fluid.
… focuses on the dynamic interactions between finite thin elastic circular cylindrical shells and fluids. The physical coupling phenomenon is explored considering liquid storage tanks and short tubes with an annular flow. Free radial vibrations of tanks are investigated by a classical …
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Decoding details : integrating physics of assembly in discrete element structures
… and materials are able to iterate through different possibilities creating novel details, usually less experienced designers can only reproduce standard solutions. In the era of digital design and fabrication, where material and building information can be parametrically linked and massively …
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Finite element micromechanics modeling of inelastic deformation of unidirectionally fiber-reinforced composites
Part I (Efficient Endochronic Finite Element Analysis: an Example of a Cyclically Loaded Boron/Aluminum Composite): A convenient and efficient algorithmic tangent matrix approach has been developed for 3-D finite element (FE) analysis using the endochronic theory without a yield surface. The …
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Performance Quantification of Interlayer Systems in Flexible Pavements Using Finite Element Analysis, Instrument Response, and Non Destructive Testing
… a newly-designed geocomposite membrane) in different pavement applications. Steel reinforcing netting and geocomposite membrane have been installed at the Virginia Smart Road in four different sections. Ground penetrating radar (GPR) surveys and time domain reflectometer (TDR) validated the …
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Development and characterisation of novel structural composites from recycled materials
… timber and PVC posts and rails in equestrian fencing. The development of these composites is a recycling approach that makes use of carpet waste which would otherwise be sent to landfill thereby increasing environmental pollution. The study encompasses the investigation of relevant material …
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Adjustment factors for MEPDG pavement responses considering three- dimensional analysis and wide-base tire
… as compared to its predecessor in the design and analysis of pavement structures. The mechanistic (MEDPG analysis) calculates critical pavement responses due to pavement-tire interactions. On the other hand, the empirical part refers to the prediction of pavement distress propagation over time …
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Micromechanics analysis of space simulated thermal deformations and stresses in continuous fiber reinforced composites
… were investigated with a micromechanics analysis. The investigation focused on two primary areas. First, available explicit expressions for predicting the effective coefficients of thermal expansion (CTE's) for a composite were compared with each other and with a finite element (FE) …
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Dynamic Response and Containment of Blade Shedding in Gas Turbine Engines
… and material nonlinearities, and mode coupling effects. The transient response of traditional metallic blades under a periodic contact load and decaying centrifugal force field is obtained by modeling the blade as a rotating tapered Timoshenko beam. The dynamic behavior of realistic advanced MMC …
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Numerical methods for the stress analysis of pipe-work junctions
Pipe junctions arc a regular feature of piping and pressure vessel systems and are often the subject of multiple loads. acting simultaneously and at irregular intervals. Due to the nature and complexity of the loading. the subject has received a significant amount of study from designers and stress …
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Fatigue crack propagation in functionally graded materials
… loading was investigated via experiments and finite element (FE) analysis. Alumina-epoxy composites with an interpenetrating-network structure and tailored spatial variation in composition were produced via a multi-step infiltration technique. Compressed polyurethane foam was infiltrated with …
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