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Showing 1 to 20 of 21 for “"3D finite element analysis"”.
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Evaluating the capabilities of some constitutive models in reproducing the experimental behaviour of stiff clay subjected to tunnelling stress paths
… stress paths have been determined from 2D and 3D finite element analysis using PLAXIS. Reconstituted Speswhite Kaolin clay specimens have been prepared from slurry, their properties investigated in detail, and tested using state-of-the-art stress path equipment and on-sample instrumentation. …
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Integration of Physically-based and Data-driven Approaches for Thermal Field Prediction in Additive Manufacturing
… framework consists of (i) thermal modeling using 3D finite element analysis (FEA), (ii) surrogate modeling using functional Gaussian process, and (iii) Bayesian calibration using the thermal imaging data. Based on heat transfer laws, I first investigate the transient thermal behavior during AM …
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Discrete Damage Mechanics Applied To Transverse Matrix Cracking
… stresses. The model was latter validated using 3D finite element analysis (FEA) in a repetitive unit volume for a wide interval of crack densities and for several laminates, and the difference was found to be within 3%. The FEA, the model and classical laminate theory all converged to the same …
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Design of a High Specific Power Electric Machine for Turboelectric Propulsion
… Based on these findings and supported by 2D and 3D finite element analysis, a 19.7 kW/kg, megawatt-class, air-cooled tooth-and-slot Halbach array electrical machine demonstrator is conceived. A detailed design study together with risk mitigation experiments of key components are carried out, …
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Multi-objective optimization and meta-modeling of tape-wound transformers
… techniques and validated using both 2D and 3D finite element analysis. To enable high frequency design, expressions that predict the winding AC resistance and the proximity effect loss are derived. In addition, a thermal equivalent circuit (TEC) model is established to predict the …
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Evaluation of moment redistribution for hybrid HPS 70W bridge girders
… hybrid configurations.;In this work, refined 3D finite element analysis (FEA) tools are employed to assess the moment rotation characteristics for a wide range of hypothetical hybrid steel I-shaped girder sections. These tools are successfully calibrated against available experimental data and …
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Design and optimisation of three-phase salient rotor wound field flux switching motor
… studied, from the design features to performance analysis. For the three-phase operation, 11 topologies were feasible when employing a 12-tooth and 24-tooth stator. The subsequent optimisation work carried out using deterministic optimisation approach and Genetic Algorithm (GA) method to achieve …
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Feasibility Study on Highly Slender Circular Concrete Filled Tubes Under Axial Compression
… these experimental results are performed using 3D finite element analysis models. The critical buckling load is determined using J2 deformation theory, which proves to give a good estimate when compared with the experimental results. The main objective of the work is to determine if a simplified …
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Modeling and Design of Planar Integrated Magnetic Components
… First, one-dimensional eddy current analysis in some simple winding strategies is discussed. Two factors are defined in order to quantify the skin and proximity effect contributions as a function of frequency. For complicated structures, 2D and 3D finite element analysis (FEA) is …
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Integrated Sinc Method for Composite and Hybrid Structures
… by integration of the equilibrium equations of 3D elasticity are known without post-processing. Interlaminar stresses obtained with the Sinc method based on Interpolation of Highest derivative were compared for the first-order and third-order shear deformable theories, the refined zigzag beam …
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Laminar cracking in post-tensioned concrete nuclear containment buildings
… These properties and parameters were utilized in 3D finite element analysis of the mock-ups in COMSOL Multiphysics and compared with experimental results. Non-destructive evaluation via shear wave tomography was conducted on the mock-ups to identify flaws and determine the effectiveness of the …
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Analysis of a hybrid composite pressure vessel using multi-scale computed tomography techniques
… the authors knowledge, the first direct internal 3D measurement of the accumulation of fibre damage for commercial CFRP materials under structurally relevant load conditions. A high level of confidence is placed in the measurements, as the failure processes are viewed internally at the relevant …
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Design and Modeling Environment for Nano-Electro-Mechanical Switch (NEMS) Digital Systems
… with the same accuracy of a slow multi-physics 3D Finite Element Analysis (FEA) model. The 3D FEA model is constructed to capture the multi-physics phenomena of the switches using the FEA simulation tool (COMSOL Multi-physics). The 3D FEA model is calibrated using the fabricated device …
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A shape analysis approach to prediction of bone stiffness using FEXI
… geometry and the spatial distribution of bone. Finite element analysis can be performed in both two and three dimensions, and predicts the deformation or induced stress when a load is applied to a structure (such as a bone) of defined material composition and shape. The simulation of a …
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Effect of cooling rate and stacking sequence on the fatigue behavior of notched quasi-isotropic APC-2 laminates
… Scanning Acoustic Microscopy (SAM). Post failure analysis of the specimens was carried out by Scanning Electron Microscopy (SEM). A quasi-3D Finite Element Analysis was performed to compare the differences in the interlaminar stresses arising around the notch in the specimens of the two layups …
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Effect of cutting tool microgeometry when milling hardened steels, a finite element simulation and surface integrity analysis
This research work presents a 3D finite element model for the milling of hardened steels. The model was developed using ABAQUS/Explicit software and the Lagrangian approach was utilized. Experimental milling tests were performed to validate the numerically generated cutting forces and chip …
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Modeling and Mitigation of EMI from Near-Field Coupling Effects in Front-End Power Supplies
… conducted EMI are identified. Three-dimensional (3D) finite-element analysis (FEA) simulations are used to predict the values of these couplings based on the converter's layout and mechanical design. By combining analytical and FEA models, the conducted EMI spectra can be accurately predicted …
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Study of load transfer efficiency of airfield rigid pavement joints based on stresses and deflections
… the above effect considering multi-slabs in finite element modeling. The three objectives of the study were: 1) To determine how 25% stress-based load transfer efficiency compares considering above mentioned variables; 2) To study the effect of various load types such as static versus moving …
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Nonlinear aeroelastic modelling of large wind turbine composite blades
… Additionally, existing cross-sectional analysis models, which are used to extract cross-sectional properties of wind turbine composite blades for aeroelastic modelling, are either time-consuming or inaccurate. This thesis aims to provide a reliable and efficient aeroelastic modelling of …
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Biological Concept for Implant Treatment of Completely Toothless Lower Jaw with Fixed Implant-Supported Prostheses // Биологична концепция за имплантологично лечение на изцяло обеззъбена долна челюст с неснемаеми протезни конструкции
… mandibular flexure during function by creating a 3D computer finite element analysis (FEA). 2. A study on the stress distribution in the peri-implant bone around the most distal implants using SolidWorks design and 3D finite element analysis. 3. An in vivo study on the mandibular flexure by …
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